Steca PR - GRYPS

SOLAR ELECTRONICS 

PHOTOVOLTAIC 

Product Catalogue 

2005/2006 

English 

www.stecasolar.com

Photovoltaic Technology. Made by Steca. 

Products from the Market Leader 

The constant development of new technologies makes Steca 

to the leading supplier of solar electronics. 

Steca was founded in 1976 and since 

then we have established ourselves as 

the leading provider in the electronic 

sector. 

Thanks to many years of experience 

and combined expertise in different 

manufacturing areas, we constantly 

improve our processes to offer customers 

the highest quality and innovative 

products. 

Steca continuously conducts research 

projects in our development department. 

Furthermore, we cooperate closely 

with leading partners in the field 

of science and research, including the 

Fraunhofer Institute for Solar Energy 

Systems. This has enabled Steca to 

become the technological leader in 

the field of intelligent electronics. Two 

examples from many: the state of 

charge (SOC) identification by the patented 

AtonIC © chip and our optimised 

hybrid charging technology. 

Worldwide presence 

Steca is the worldwide leader in the 

field of solar charge controllers. More 

than 1,000,000 Steca controllers are in 

use in more than 100 countries. Our 

international and multilingual marketing 

team is Steca’s strength. 

Certified 

Steca is certified to 

- DIN EN ISO 9001:2000 and 

- DIN EN ISO 14001. 

This guarantees a maximum of quality, 

safety, reliability and environmental 

protection during product development, 

production and distribution. 

Steca is qualified for all World Bank 

photovoltaic projects. The numerous 

quality labels from various testing institutes 

testify the outstanding quality 

of Steca products. 

Neutral and independent 

Steca is a hundred percent neutral and 

independent company. We concentrate 

entirely on developing and producing 

electronic control devices. This 

strategic position enables us to supply 

all market participants. In general, this 

benefits every individual customer. 

300 

200 

100 

Staff 

0 

1976 1980 1990 2000 2005 

The Steca Headquarters in Memmingen 

2 

Steca GmbH • Mammostrasse 1 • D-87700 Memmingen • Germany • Tel: +49 (0)8331 8558 0 • Fax: +49 (0)8331 8558 12 • www.stecasolar.com


Products for the 

next Generation 

More than 1 Million Steca 

charge controllers handle 

over 110 MWp solar power. 

Worldwide. 

The sun is the source of all life on 

earth. The solar energy that reaches 

our planet every day produces 2500 

times more power than we currently 

consume. Photovoltaic cells convert 

the sun‘s irradiation into clean electricity 

without greenhouse gas emissions. 

Two billion people do not have access 

to electricity. Steca is committed to 

improve these people‘s living conditions 

by providing quality products with 

the lowest lifetime cost. 

Solutions for the next generation. 

Table of Contents 

Information 

Products from the Market Leader ......................................................................2 

Produkt Technology: Made by Steca ..................................................................4 

Quality in Detail ................................................................................................5 

Steca‘s Charging Technology .............................................................................6 

Solar Home Systems ..........................................................................................8 

Stand Alone Inverter Systems ............................................................................9 

Hybrid Systems ................................................................................................10 

Different Hybrid System Concept ....................................................................12 

General Recommendations .............................................................................13 

Products 

Solar Charge Controller ...................................................................................14 

Accessories ......................................................................................................24 

Converters .......................................................................................................28 

Fuel cell ...........................................................................................................30 

Lamps .............................................................................................................31 

Sine Wave Inverters .........................................................................................33 

Inverter Selection Matrix .................................................................................39 

Symbols 

100 W 

12.8 V 

LCD 

SHS 

VPS 

COM 

SOC 

Solar Power 

maximum input solar power 

LC Display 

devices which show the 

charging procedures via LCD 

Solar Home System 

especially designed for applications 

in solar home systems 

Village Power Supply 

especially designed for high 

power applications to electrify 

rural villages 

Telecom Power Supply 


in telecom with low noise 

interferences 

SOC 

AtonIC © processor inside for 

State Of Charge calculation 

PREPAY 

REMOTE 

HYBRID 

RV 

MARINE 

DC 

UPS 

AC 

Prepayment Systems 


in rural concession areas 

Remote Monitoring 

transmission of system data via 

GSM or analogue telephone link 

Hybrid Systems 


with wind, diesel & hydro 

generators or fuel cells 

Recreation Vehicles 

especially designed for RV 

applications 

Marine Solar Systems 


in salty and humid 

environment 

Uninterrupted Power Supply 

inverter can also charge battery from an 

AC-supply 

Steca GmbH • Mammostrasse 1 • D-87700 Memmingen • Germany • Tel: +49 (0)8331 8558 0 • Fax: +49 (0)8331 8558 12 • www.stecasolar.com 3


Product Technology: Made by Steca 

Highest quality standards are achieved by intensive research 

& development, manufacturing and quality control – all located 

under one roof. 

Development 

Our highly-motivated development 

team researches new technologies 

and helps product ideas become reality. 

Our innovatively equipped development 

department means we can get 

the optimum results out of our system. 

An integrated project management 

system validates every phase in 

the product’s evolution. 

Design 

The construction and design of PCBs 

and mechanical parts are important 

factors in any economic production. 

Modern CAD workstations help us to 

find appropriate solutions and give 

products the best possible finish. 

Production 

Automatic assembly with high-tech 

THT and SMD machines means we 

can guarantee a secure manufacturing 

process. All our production equipment 

is set up for lead-free soldering and is 

therefore in tune with an environmentally 

sound future. 

Assembly 

The assembly and final testing of our 

products is done by skilled and trained 

personnel only. As we combine 

production experience from different 

fields of business, we can guarantee 

highly developed procedures and effective 

manufacturing processes. 

Quality 

Our company’s philosophy is to guarantee 

quality right from the customer’s 

initial order to the moment we deliver 

the finished product. With an integrated 

quality management system we are 

able to monitor and regulate all phases 

of the development and production 

process. Steca is certified as per DIN EN 

ISO 9001:2000 and DIN EN ISO 14001. 

4 



Quality in Detail 

Quality becomes visible by the excellent finishing 

of the product. 



Steca‘s Charging Technology 

The performance of our products is shown by the accuracy of 

the state of charge (SOC) measurement, which results in the 

long lifetime of the battery. 

What does SOC mean 

The SOC (State of Charge) indicates 

the actual charging status of the battery. 

If the battery is fully charged the 

SOC is 100 % - if it is completely empty 

the SOC is 0 %. All values in between 

are possible, but a lot of battery types 

should not reach SOC values less than 

30 %. It is important not to confuse 

the SOC with the capacity of the battery. 

The SOC does not reflect the remaining 

capacity of the battery. The actual 

remaining capacity of the battery is 

influenced by a lot of parameters besides 

the SOC. Multiplying the SOC with 

the nominal capacity of the battery 

results in information about the residual 

capacity of the battery. This value 

does still not reflect the remaining capacity 

accurately due to various other 

parameters including the age of the 

battery. 

Why is SOC calculation important 

If a battery is charged, the charge controller 

needs to know if it is full to prevent 

a batteries damage due to over 

charging. While discharging, the controller 

needs to know if the battery is 

empty in order to prevent dangerous 

deep discharging. There are several 

possibilities to determine if the battery 

is full or empty. The most common 

criterion is the voltage of the battery. 

A certain fixed voltage is set to disconnect 

the load and protect the battery. 

Unfortunately this criterion is improper. 

Especially in solar systems, low 

discharging currents are common and 

lead to improper battery maintenance 

if a fixed voltage for load disconnection 

is used. Better solutions also take 

the charging / discharging current into 

account to determine if the battery 

has to be disconnected from the load. 

But also this method does not allow 

an adequate load disconnection to 

protect the battery optimally due to 

a very low accuracy and a high error 

rate. A lot of additional parameters, 

like temperature, the age of the battery, 

the user behaviour and other values, 

influence the battery. 

Only an accurately calculated state of 

charge allows to disconnect the load 

correct according to the properties of 

the battery. This is why Steca developed 

a powerful and precise algorithm 

to determine the actual state of charge 

of a battery. 

U [V/cell] 

2.1 

2.0 

90 

80 

70 

60 

State of charge 

50 

40 

SOC = 30 % 

1.9 

20 

10 

constant 

discharge 

voltage 

1.8 

1.7 

20 

15 

10 

7.5 

5 

Voltage of Battery 

1.6 

1.5 

1.4 

100 

80 

60 

50 

40 

30 

Current 

I = 25 A 

0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 

Capacity of Battery 

6 



How does the Steca SOC 

algorithm work 

The Steca state of charge algorithm is 

a combination of different methods 

in order to ensure a precise calculation 

combined with a stable long time 

performance. Cost optimised product 

realisation is additionally another important 

point for Steca. Years of experience 

in this field and important research 

activities led to a self learning 

„fuzzy logic“ algorithm. It takes into 

account the user behaviour and the 

ageing of the battery. The voltage of 

the battery, as well as all battery currents, 

are watched closely by the charge 

controller in combination with the 

temperature. The charger approximates 

the SOC, during a learning period 

which takes place in the first cycles. 

By monitoring the battery and adapting 

parameters to the changes, a self 

learning algorithm results that is also 

able to take the use of the battery into 

account. This characteristic makes the 

Steca SOC algorithm a powerful and 

reliable function, which will ensure 

the correct monitoring of the battery. 

The user benefits from a fast and 

precise information about the battery 

status that is displayed on the charge 

controller. Finally the user benefits 

from the most important advantage 

to enlarge the life-time of the battery 

with the help of an optimised battery 

maintenance. 

Which chargers from Steca 

carry the optimised algorithm 

The Steca product range is divided into 

two lines. One is optimised for use in 

simple applications with less demand 

and equipped with the minimum necessary 

features. The other line is designed 

to cover high-end demand to 

supply a good communication interface 

to the user and optimised battery 

maintenance features. For both lines 

there exist charge controllers in a wide 

power range. Charge controllers in a 

wide power range exist for both lines. 

All chargers that are equipped with 

the special Steca State of Charge algorithm 

are marked with the SOC symbol 

in this catalogue. 

Example 

The graph shows the properties of a 28 Ah lead acid battery in relation to 

the charging / discharging current, the voltage and the state of charge. If the 

full battery is discharged with 50 A and a load cut off voltage of 1.85 V/cell 

is applied (equal to 11.1 V for 12 V battery) the load will be disconnected at 

around 70 % state of charge. This means the battery is still quite full but the 

load can no longer be supplied due to deep discharging protection. If it is discharged 

with 5 A, the voltage of 11.1 V will lead to a disconnection at 10 % 

state of charge which is already a dangerous deep discharge for the battery. 

With the Steca SOC algorithm the load will be disconnected along the line 

of 30 % SOC in dependence of the discharging current at the cross with the 

discharging current line. Only this complicated procedure can ensure optimal 

battery maintenance. 



Solar Home Systems 

Generator 

12 V 

Load 

Controller 

Solar Charge Controller 

Battery 

+ 

System overview 

A Solar Home System consists of a Steca Solar charge controller, a battery, a solar 

module and the load. The load is always a DC load in standard Solar Home Systems. 

The charge controller is connected directly to the battery. The module and the load 

are connected directly to the charge controller terminals. Steca controllers regulate 

the complete energy flow within the system. The battery is charged by the current 

from the solar module. If the battery is full, the charge controller limits the current 

to the battery to protect the battery from over charging. If the load discharges the 

battery, the controller also cuts off the load before the battery is empty, in order 

to prevent a dangerous deep discharge of the battery. Steca controllers also have 

an integrated intelligent battery monitoring system. The optimal charging strategy 

will be chosen depending on the need of the battery. In Solar Home Systems the 

charge controller is the central device – all functions of the system are influenced 

by this controller. Due to this fact it is important to choose a good controller. 

8 



Stand Alone Inverter Systems 

Generator 

12 V 

Load 

Controller 


= 

~ 

Inverter 

230 V 

Battery 

+ 

 


Stand alone inverter systems consist of a standard Solar Home System with solar 

module, battery and solar charge controller, plus an additional inverter that supplies 

AC power. To such a system you can connect any commercial AC appliance 

known from the public grid. Furthermore, it is even possible to run DC loads. The 

inverter is connected directly to the battery with a short and thick cable. Such a 

system can be realised as a standard 12 V system, alternatively also as a 24 V or 

48 V system for higher power demands. Due to the simple system concept, the 

installation is fast and easy to do. 



Hybrid Systems 

Generator 

Solar 

Controller 

Steca Power Tarom 


Steca PA Tarcom 

DC Bus 

Steca PA HS200 

Battery 

+ + + + 


The main feature of a hybrid system is the use of two or more different energy 

sources. For so-called photovoltaic hybrid systems in the field of solar energy especially 

a diesel generator, a wind generator or a public grid is used as an additional 

source of energy. The inverters with integrated battery charger designed for hybrid 

systems supply the connected alternating current loads either out of the battery 

or from the second energy source – always according to the requirements of the 

system. It is also possible to recharge the battery from the additional energy source 

via the battery charger. The advantage of photovoltaic hybrid systems is that the 

solar generator does not have to be oversized to supply the loads even during 

months with low solar irradiation. This saves a significant amount of the initial 

investment. The solar produced power is always used primarily in the system. But 

in combination with the second energy source reliable AC power is available day 

and night throughout the year. 

10 



12 V 

Load 

Generator Wind Grid 

Relais 

Steca PA 15 

MDCI 

230 V 

Steca 

PA 15 

~ 

= 

Inverter 

Steca HPC 

 

= 

~ 

Inverter 

Steca SI 

400 V 

= 

~ 

Inverter 


= 

~ 

Inverter 




Different Hybrid System Concepts 

Single Phase System Concept 

The Steca solar charge controllers 

Tarom or Power Tarom are the central 

and intelligent devices within the system, 

which regulate the energy flow 

and are responsible for battery supervision. 

The Tarom / Power Tarom 

will be connected directly to the battery. 

The DC-bus is also connected directly 

to the battery, while the Steca 

PA HS200 is located in the minus of 

the battery connection to submit all 

data to the Tarom / Power Tarom. All 

other components, chargers, inverters, 

or any other devices like remote switch 

Steca PA 15, are connected to the 

DC-bus. If the SOC of the battery is low, 

the output of the PA 15 is connected 

to a relay to effect an automatic start 

up of a diesel generator. The working 

contact of the relay built the dry contact 

connection to the diesel start up 

switch. 

The Tarom / Power Tarom manages 

the DC hybrid system. The current 

sensor PA HS200 submits all charging 

and discharging information coming 

from the DC-bus to the Tarom / Power 

Tarom. With the help of this information 

the controller is able to calculate the 

actual SOC of the battery, which is 

submitted to all Steca PA 15 switches 

by DC power-line modulation. Each 

PA 15 can be configured to switch on 

within a specific SOC range. If the inverter 

discharges the battery the PA 

HS200 submits this information to the 

Tarom / Power Tarom which calculates 

the SOC. The PA 15 that is connected 

to the inverter / charger follows this information. 

As soon as the SOC drops 

down below a certain value, it switches 

on the diesel generator. The generator 

now supplies the load and charges the 

battery at the same time. As soon as 

the SOC reaches the upper value configured 

at the PA 15, the diesel will be 

switched off by the PA 15 again. 

To realise an automatic AC energy management 

the AC output of the diesel is 

connected to the AC input of the inverter, 

while the load is always connected 

to the inverter output. In the case of 

diesel AC availability, the inverter automatically 

switches to transfer mode to 

supply the load and to charge the battery 

at the same time. If diesel AC drops 

down an automatic switch to battery 

mode is carried out by the inverter. 

Important features 

• Combination of different power 

sources like PV, wind, diesel generators 

etc. 

• 24 h / d full 230 V~ power supply 

• 12 V / 24 V or 48 V overall DC-bus 

• Automatic energy management 

regulation based on the State of 

Charge of the battery. Including 

automatic start of controllable 

power sources like e. g. diesel 

generators 

• Optimised battery charging algorithm 

Three Phase System Concept 

The regulation concept is similar to 

the single phase concept. If more than 

one Tarom / Power Tarom is used, one 

of them has to be defined as the master 

Tarom; all others are automatically 

slave Taroms. The master Tarom / 

Power Tarom is connected directly to 

the battery while all slaves are connected 

to the DC-bus. Only the master 

Tarom / PowerTarom displays the correct 

SOC of the battery and controls 

the overall energy flow within the 

system. Slave Taroms / Power Taroms 

only supervise the charging of the modules 

to which they are connected. 

To realise a three phase power supply 

system, three inverters are connected 

to the DC-bus. Therefore special three 

phase options are needed for the inverters. 

In addition to the three phase 

system, a single phase inverter / charger 

can be connected to the DC-bus 

to recharge the battery from any AC 

power source. 

Both three phase and single phase hybrid 

systems are based on the same 

energy management. With the help of 

the Steca PA HS200 current sensor, the 

master Tarom / Power Tarom is supplied 

with the charging and discharging 

currents of the components like 

slave Taroms / Power Taroms, inverters 

and others. The Steca PA 15 switches 

the generator on and off according to 

the calculated SOC. The three phase 

inverters are equipped with an integrated 

low voltage disconnection. 

Important features 

• Combination of different power 

sources like PV, wind, diesel generators 

etc. 

• 24 h / d full 3 phase 400 V~ and 

single phase 230 V~ power supply 

• 12 V / 24 V or 48 V overall DC-bus 

• Automatic energy management 

regulation based on the State of 

Charge of the battery. Including automatic 

start of controllable power 

sources like e. g. diesel generators 

• Optimised battery charging algorithm 

12 



General Recommendations 

for Inverter and Hybrid Systems 

Sine Wave Inverters 

In contrast to modified sine wave inverters, 

the Steca sine wave inverters 

supply a pure and accurate regulated 

sine wave to the load. Only this pure 

sine wave technology allows the user 

to run all types of AC loads within the 

off-grid photovoltaic system, which 

can normally be used in grid connected 

mains power supply systems. 

Additionally, this technology guarantees 

a noiseless operation, which is 

especially important if critical applications 

like radios, television and other 

sensitive devices are used. 

Modified 

Sine Wave 

Inverter selection 

Sine Wave 

The inverter should be sized properly 

depending on the type of application. 

The summary of comsumption should 

be covered by the continuous power 

of the inverter while starting currents 

should be within the max. power. 

To allow an future increase of consumption 

Steca recommends to oversize 

the inverter. 

PV generator and charge 

controller selection 

The solar module array has to be adapted 

to the local solar irradiation conditions 

and the energy consumption of 

the system. To avoid downtimes, the 

PV generator must provide enough 

energy even during months with low 

irradiance to meet the needs of the 

loads. 

The minimum size of the regulator had 

to cover the max. short circuit current 

of the module and the max. load current. 

Sommetimes even technical feature 

had to be supported in the application 

and a high end regulator should 

be used in a low power system. 

To keep the initial cost on a low level 

we recommend to size modules and 

battery according to the actuel consumption 

and to size the controller 

corresponding to future re-fitting. 

Battery rating 

The battery has to be sized properly 

in order to enable the inverter also to 

supply high demanding loads. Some 

critical loads like fridges, freezers, 

pumps and motors draw extremely 

high currents during a short starting 

phase. To run such loads it is important 

to use a capable inverter with an extremely 

high overload capacity especially 

during the starting phase. The battery 

also has to be sized in a proper way to 

be able to supply enough current if requested 

by the inverter. The following 

formula recommends how to size the 

battery: the batteries capacity should 

be at least 5 times more than the nominal 

power of the inverter divided by 

the nominal voltage of the battery 

C_batt ≥ 5 h * Pnom / Unom 

while Pnom indicates the nominal power 

of the inverter in Watt and Unom 

the nominal voltage of the battery in 

Volt. 

Pnom_ 

inverter 

Unom_ 

battery 

Battery 

capacity 

200 W 12 V > 100 Ah 

500 W 12 V > 200 Ah 

1000 W 12 V > 400 Ah 

2000 W 12 V > 800 Ah 

2000 W 24 V > 400 Ah 

3500 W 24 V > 700 Ah 

3500 W 48 V > 350 Ah 

5000 W 48 V > 500 Ah 

7000 W 48 V > 700 Ah 

Examples for battery selection 

Selection of system voltage 

The system voltage of the off-grid photovoltaic 

system should be selected 

in dependence of the load demand. 

The higher the load demand the higher 

the system voltage. If no 12 V DC 

loads are connected, a higher system 

voltage of 24 V or 48 V should be preferred 

to reduce the DC-current in the 

system. Above around 2500 W, only 

inverter power 48 V systems can be recommended. 

The higher the voltage, 

the lower the system currents. Finally, 

lower currents result in higher system 

efficiency due to less losses. 

Selection of cables 

DC currents are typically high in inverter 

systems. Due this fact, it is essential 

to use proper cables between the 

inverter and the battery. Always connect 

the inverter directly to the battery. 

Choose a DC inverter cable that is 

as short as possible. In addition, the 

thickness of the cable should be sized 

properly. Choose a thicker cable in 

case of doubt – this can have a significant 

influence to the overall system 

behaviour. By using thick and short 

cables the system losses can be reduced 

– the result is higher efficiency and 

better performance. If the inverter comes 

with a DC cable never enlarge this 

cable or use a thinner one. 




33 

MADE IN GERMANY 

90 

146 

Steca PR 

PR 0303, PR 00 

Power class 

3 A - A 

0 A 50 A 100 A 150 A 

The photovoltaic controllers PR 0303 and PR 0505 are used in small 

solar home systems with either a 3 or 5 Amp solar charging and 

load current capacity (up to 75 Wp). Loads such as lights, radios or 

small TVs can be switched „off“ manually on the controller without 

additional wall mounted switches. In professional applications such 

as telecommunication, the controller can also be used in small photovoltaic 

power supply systems. Thanks to the universal series switching 

technology the controller can be used with amorphous, thin 

film and crystalline solar modules. 

Certificates 

• Approved for Worldbank funded projects in Laos 

• Conform to European Standards (CE) 

• Made in Germany 

• Manufactured in a 


- DIN EN ISO 14001 facility 

SHS 

COM 

RV 

60 W 

Solar Charge Controller PR 0303 PR 00 

System voltage 

Max. module input short circuit current 3 A 5 A 

Max. load output current 3 A 5 A 

Max. self consumption 

End of charge voltage (float) 

Boost charge voltage 

Equalisation charge - 

Reconnection setpoint (LVR) 

Deep discharge protection (LVD) 

12 V 

3 mA 

13.7 V 

14.4 V 

12.5 V 

11.0 V...11.5 V 

Ambient temperature allowed -25 °C...+50 °C 

Terminal size (fine / single wire) 

6 mm² / 10 mm² 

Enclosure protection class IP 22 

Weight 

Dimensions l x w x h 

160 g 

146 x 90 x 33 mm 

Features 

• Voltage regulation 

• Automatic electronic fuse 

• Manual load switch 

• PWM series battery charging 

• Boost charging 

• Float charging 

• Current compensated deep discharge 

protection (SOC / LVD) 

• Automatic load reconnection 

• Temperature compensation 

• Positive grounding 

• (or) Negative grounding on one 

terminal 

Electronic Protections 

• High voltage disconnect (HVD) 

• Low voltage disconnect (LVD) 

current compensated 

• Reverse polarity of solar modules 

• Reverse polarity of load & battery 

• Electronic fuse 

• Short circuit of solar modules 

• Short circuit of load 

• Lightning protection by varistor 

• Low electronic interference (EMC) 

• Open circuit battery 

• Reverse current at night 

Displays 

3 LEDs 

(1) battery charging LED 

(2) green LED = battery full 

(3) red LED = battery empty 

Technical data at 25 °C / 77 °F 

14 




39 

88 

130 

Steca Solsum 

.0c, 6.6c, 8.0c, 8.8c, 10.10c 

Power class 

A - 10 A 

0 A 50 A 100 A 150 A 

One of Steca’s bestsellers are the photovoltaic controllers of the 

Solsum C series which are used in small solar home systems with a 

5 to 10 Amp solar charging and load current capacity (up to 240 

Wp). The Solsum C series was launched in 2004 as a redesign of 

the Solsum X series. The C series advantages are large connection 

terminals, fully covered PCB and a easy to understand display. The 

electronic board uses automized through hole technology for easy 

local maintenance. 

Certificates 

• Approved for Worldbank funded projects in Indonesia by TÜV 

• Listed for Worldbank funded projects in Bangladesh, China, Laos, Nepal, 

Sri Lanka, Uganda 

• Compliant to the use in tropical areas (DIN IEC 68 part 2-30) 


• Manufactured in an ISO 9001 facility 

SHS 

COM 

RV 


240 W 

Solsum 

.0c 

Solsum 

8.0c 

Solsum 

6.6c 

System voltage 12 V (24 V) 

Solsum 

8.8c 

Solsum 

10.10c 

Max. module input short circuit current 5 A 8 A 6 A 8 A 10 A 

Max. load output current 5 A 8 A 6 A 8 A 10 A 

LVD - - 


4 mA 

End of charge voltage (float) 13.7 V (27.4 V) 

Boost charge voltage; 2 h 14.4 V (28.8 V) 

Equalisation charge - 

Reconnection setpoint (LVR) without LVR 12.6 V (25.2 V) 

Deep discharge protection (LVD) without LVD 11.1 V (22.2 V) 



2.5 mm² / 4 mm² 


Weight 



165 g 

130 x 88 x 39 mm 

Features 


• PWM shunt battery charging 




• Automatic selection of voltage 

(12 V / 24 V) 




terminal 



• Low voltage disconnect (LVD), 

not 5.0c & 8.0c 





• Over temperature 

• Over voltage 





Displays 

2 LEDs 

(1) battery charging LED 

- by solar module = green LED in 

“sun” symbol 

(2) battery voltage LED 

- end of charge voltage = green LED 

- battery voltage level = red & yellow 

& green LED 

- load disconnect prewarning = fast 

flashing red LED 

- deep discharge protection = slowly 

flashing red LED 

Steca GmbH • Mammostrasse 1 • D-87700 Memmingen • Germany • Tel: +49 (0)8331 8558 0 • Fax: +49 (0)8331 8558 12 • www.stecasolar.com 

1



28 

94 

146 

Steca PR Night 

PR 0606N, PR 1010N 

Power class 

6 A - 10 A 

0 A 50 A 100 A 150 A 

The Steca PR Night is a solar lighting controller (up to 300 Wp) for 

automatic lighting control in various applications such as PV powered 

streetlights, bus shelters or billboard lighting. The controller 

detects day and night using the PV array. An entirely new feature is 

the integrated clock that sets itself automatically based on the levels 

of brightness detected during a 24 hour day. There are two major 

options: 

• the light switches on after sunset 

• the light switches on before sunrise 

Certificates 

• Approved for Worldbank funded projects in Laos 






SHS 

RV 

240 W 

Street-light Solar Charge Controller PR 0606N PR 1010N 





6 mA 



Equalisation charge programmable (deactivated for gel accu); 2 h 14.7 V or 15.0 V (29.4 V) 

Reconnection setpoint (SOC / LVR) > 50 % / 12.6 V (25.2 V) 

Deep discharge protection (SOC / LVD) < 30 % / 11.1 V (22.2 V) 



6 mm² / 10 mm² 


Weight 


Night-light function 

Morning-light function 


120 g 

146 x 94 x 28 mm 

19 h - 3 h 

23 h - 7 h 

Features 


• State of charge (SOC) battery regulation 


• Equalising charge 




(12 V / 24 V) 




terminal 

• Field adjustable parameters by two 

buttons 

• Factory adjustable 




• Dept of discharge disconnection (DOD) 












Displays 

3 LEDs 

(1) adjustment mode LED 

(2) PV system LED 

(3) state of charge LED 

16 




44 

MADE IN GERMANY 

96 

187 

Steca PR 

PR 1010, PR 11, PR 2020, PR 3030 

Power class 

10 A - 30 A 

0 A 50 A 100 A 150 A 

The Steca PR charge controllers were launched in the year 2004 as 

the fifth generation of charge controller technology (up to 900 Wp). 

This high class state of the art product upgrades the Steca Solarix 

series by a customer designed LCD which shows the accurate state 

of charge (SOC) in percent and as battery gauge symbol. The heart 

of the controller is the integrated circuit called ATONIC®II, which 

contains the improved regulation software based on a self learning 

algorithm. 

Certificates 

• Listed for Worldbank funded projects in Nepal 






SHS COM RV PREPAY 

12.8 V 

720 W SOC LCD 

Solar Charge Controller with LCD PR 1010 PR 11 PR 2020 PR 3030 


Max. module input short circuit current 10 A 15 A 20 A 30 A 

Max. load output current 10 A 15 A 20 A 30 A 


12 mA 

End of charge voltage (float) liquid 13.9 V (27.8 V) gel 14.1 V (28.2 V) 


Equalisation charge (deactivated for gel accu); 2 h 14.7 V (29.4 V) 





16 mm² / 25 mm² 


Weight 



350 g 

187 x 96 x 44 mm 

Features 


• State of charge (SOC) battery 

regulation 

• Built in Ah counter 





• Manual load switch 


(12 V / 24 V) 




terminal 


buttons 

• Lighting control options during 

nighttime 

• Interface to prepayment unit 
















Displays 

• Steca designed LCD in symbols and 

digits showing SOC, Vbat, all currents, 

Ah, alarms, day / night and more. 




55 

147 

122 

Steca PR 2020-IP 

IP 6 Version 

Power class 

20 A 

0 A 50 A 100 A 150 A 

The PR 2020-IP design is based on Steca’s PR charge controller series 

with a customer designed LCD which shows the accurate state of 

charge (SOC) in percent and as battery gauge symbol. The heart of 

the controller is the integrated circuit called ATONIC® II, which contains 

the improved regulation software based on a self learning algorithm. 

The PR 2020-IP controller operates in harsh environments 

like salt, moisture and dust. 

Certificates 



SHS COM RV MARINE 


12.8 V 

480 W SOC LCD 

PR 2020-IP 


Max. module input short circuit current 

Max. load output current 


20 A 

20 A 

12 mA 

End of charge voltage (float) liquid 13.9 V (27.8 V) gel 14.1 V (28.2 V) 







16 mm² / 25 mm² 


Weight 



350 g 

122 x 55 x 147 mm 

Features 



regulation 







(12 V / 24 V) 




terminal 


buttons 


nighttime 

• Optional potential free alarm 

contact 















Displays 

• Steca designed LCD in symbols and 

digits showing SOC, Vbat, all currents, 

Ah, alarms, day / night and more 

18 




49 

106 

188 

Steca Solarix 

Alpha, Gamma, Sigma, Omega 

Power class 

8 A - 30 A 

0 A 50 A 100 A 150 A 

Steca’s Solarix series is the world’s most sold PV charge controller 

for the use in medium sized solar home systems and PV power supplies 

in the range of 8 to 30 Amp (up to 900 Wp). The heart of the 

controller is the integrated circuit called ATONIC®, which contains 

the regulation software based on a self learning algorithm. The result 

is an accurate state of charge (SOC) metering of the battery, the 

best insurance for a long battery lifetime. 

Certificates 

• Approved for Worldbank funded projects in Indonesia by TÜV 

• Listed for Worldbank funded projects in Bangladesh, China, Laos, Nepal, 

Sri Lanka, Uganda 

• Certificate ONE / KfW funded projects in Morocco 



• UL listing in 1999 


• TÜV Worldbank spec 

• ThermieB: SUP-995-96 (Morocco) 

• Manufactured in a DIN EN ISO 9001:2000 and DIN EN ISO 14001 facility 

SHS 

COM 

RV 

720 W SOC 

Solar Charge Controller with LED Alpha Gamma Sigma Omega 


Max. module input short circuit current 8 A 12 A 20 A 30 A 

Max. load output current 8 A 12 A 20 A 30 A 


5 mA 








16 mm² / 25 mm² 


Weight 



420 g 

188 x 106 x 49 mm 

Features 



regulation 






(12 V / 24 V) 




terminal 

• Field adjustable parameters by 

jumpers on PCB 

• Option: operates load only by night 















Displays 

2 LEDs 






49 

128 

188 


2401, 4401 

Power class 

40 A 

0 A 50 A 100 A 150 A 

programable 

The Steca Solarix 2401 and 4401 controllers complete the product 

range of the Solarix Omega 30 Amps controller to 40 Amps solar 

current, available in 12 V, 24 V and 48 V. The load current is limited 

to 10 Amps. The charging procedures are based on voltage levels 

which can be individually adjusted by four buttons behind the front 

cover. 

Certificates 






SHS 

COM 

RV 

12.8 V 

1920 W LCD 

Solar Charge Controller 2401 4401 

System voltage 12 V (24 V) 48 V 




14 mA 

End of charge voltage (float) 13.7 V (27.4 V) 54.8 V 

Boost charge voltage; 2 h 14.4 V (28.8 V) 57.6 V 

Equalisation charge (deactivated for gel accu); 2 h 14.7 V (29.4 V) 58.8 V 

Reconnection setpoint (LVR) 12.6 V (25.2 V) 50.4 V 

Deep discharge protection (LVD) 11.1 V (22.2 V) 44.4 V 



16 mm² / 25 mm² 


Weight 



550 g 

188 x 128 x 49 mm 

Features 







• Automatic selection of voltage for 

12 V / 24 V 




terminal 

• Field adjustable parameters by four 

buttons 

• RJ45 interface 














Displays 

• One line LCD displaying the voltage 

of the battery and all currents 

20 




57 112 

173 

Steca Solarix ST 

ST 10B10, ST 10L10, ST 20B20, ST 20L20 

Power class 

10 A - 20 A 

0 A 50 A 100 A 150 A 

This charge controller is based on Steca’s SOLARIX controllers in a IP 

65 splash water proof enclosure. The Solarix ST controller operates 

in harsh environments like salt, moisture and dust. The 10 Amp version 

comes with a plastic IP 65 enclosure, the 20 Amp version in an 

aluminium body. 

Certificates 




• UL listing in 1999 

SHS COM RV MARINE 

720 W SOC 

Charge controller without LCD-Display ST 10B10 ST 10L10 

with LCD-Display ST 20B20 ST 20L20 





7 mA 







Terminal size (fine / single wire) 4 mm² / 6 mm² 10 mm² / 16 mm² 


Weight 400 g 620 g 


173 x 57 x 112 mm 

Features 



regulation 






(12V / 24V) 




terminal 

• Field adjustable parameters by 

jumpers on PCB 

• Option: operates load only by night 















Displays 

2 LEDs 



- optional LCD showing SOC, Vbat, 

all currents, alarms 





49 

128 

188 

Steca Tarom 

23, 24, 440 

Power class 

30 A - 4 A 

0 A 50 A 100 A 150 A 

programable 

The Steca Tarom is the high end solar charge controller optimally 

designed for demanding telecom applications and complex off-grid 

PV hybrid system architectures. A huge variety of exiting features 

allows the user to adapt this controller to the special needs of the 

specific installation. 

The optimised SOC calculation of Steca is implemented in the 

Tarom. It is your best choice for the medium and large power range 

(up to 2400 Wp) on three voltage levels (12 V, 24 V, 48 V). Additionally 

it is possible to connect further devices like a temperature 

sensor, a datalogger and a remote switch to configure and monitor 

the photovoltaic system optimally. An in built Ah counter gives additional 

valuable energy balance information to the user. 

Certificates 




• Manufactured in a DIN EN ISO 9001:2000 and DIN EN ISO 14001 facility 

SHS VPS COM RV PREPAY REMOTE 

HYBRID 

12.8 V 

1920 W SOC LCD 

Solar Charge Controller Tarom 23 Tarom 24 Tarom 440 


Max. module input short circuit current 35 A 45 A 40 A 

Max. load output current 35 A 45 A 40 A 


14 mA 




Reconnection setpoint (SOC / LVR) > 50 % / 12.6 V (25.2 V) > 50 % / 50.4 V 

Deep discharge protection (SOC / LVD) < 30 % / 11.1 V (22.2 V) < 30 % / 44.4 V 



16 mm² / 25 mm² 


Weight 



550 g 

188 x 128 x 49 mm 

Features 



regulation 

• Energy management for hybrid 

systems 







12 V / 24 V 


• Positive grounding (or) 

• Negative grounding on one terminal 


buttons 


nighttime 


• Manual load disconnect 















Displays 

• Two line LCD showing SOC, Vbat, 

all currents, Ah, alarms, charging 

procedure 

22 




OK 

MENU 

157 

330 

330 

360 


2070, 2140, 40, 4110, 4140 

Power class 

A - 140 A 

0 A 50 A 100 A 150 A 

programable 

Designed for industrial and outdoor applications, Steca Power 

Tarom controllers come in a IP 65 powder painted steel enclosure 

for the large power range (up to 8400 Wp) on three voltage levels 

(12 V, 24 V, 48 V). Power Tarom controllers are based on the same 

technology as the Steca Tarom controllers. If you connect them in 

parallel on a common DC bus power line, several controllers operate 

in one single PV or PV hybrid system in the range up to 20 kWp of 

solar power. 

(For more information about Steca hybrid systems see page 10) 

Certificates 







SHS VPS COM RV MARINE REMOTE HYBRID 


Power Tarom 

2070 

12.8 V 

6720 W SOC LCD 

Power Tarom 

2140 

Power Tarom 

40 

Power Tarom 

4110 


Power Tarom 

4140 

Max. module input short circuit current 70 A 140 A 55 A 110 A 140 A 

Max. load output current 70 A 70 A 55 A 55 A 70 A 


14 mA 




Reconnection setpoint (SOC / LVR) > 50 % / 12.6 V (25.2 V) > 50 % / 50.4 V 

Deep discharge protection (SOC / LVD) < 30 % / 11.1 V (22.2 V) < 30 % / 44.4 V 



50 mm² / 70 mm² 


Weight 


(l) x 330 x 157 


10 kg 

330 mm 360 mm 330 mm 360 mm 360 mm 

Features 


• State of charge (SOC) battery regulation 







12 V / 24 V 




terminal 


buttons 


nighttime 


• Manual load disconnect 

• Dry contact 















Displays 

• Two line LCD on front door showing 

SOC, Vbat, all currents, Ah, alarms, 

charging procedure 



Accessories 

82 

Tarcom Software included. 

38 

130 

Steca PA Tarcom 

Data Logger 

Steca’s data logger PA Tarcom is connected to the RJ45 data loop 

of the Tarom or Power Tarom charge controller or via the PA HS200 

shunt. It is available in different versions as a simple RS232 serial 

interface (PA Tarcom 01) to log and read out data directly to a PC or 

laptop, as a data logger connected with integrated analogue modem 

(PA Tarcom RM), as a data logger with an optional telephone 

link for phone calls (PA Tarcom RMT) and as a datalogger with a 

built in GSM modem for remote monitoring (PA Tarcom GSM). The 

PA Tarcom data logger is shipped with software. 

Certificates 






SHS VPS COM RV REMOTE HYBRID 

Data Logger 


Operating voltage 

PA Tarcom 

01 (Serial) 

10 kW 

PA Tarcom 

RM / RMT (Modem) 

12 V / 24 V / 48 V 

8 V - 65 V 

PA Tarcom 

GSM 

Logger capacity 1 Mbit = 2 min. (11 days) 4:00 h (4 years) 

PA Tarcom 

Ethernet 

Max. self consumption < 10 mA 30 mA 

Recorded values 

System status information 

relative time, total charge current, battery current, solar module current, 

load current, SOC, battery voltage, system status, 

analogue sensor 

night, overload, load disconnect, overvoltage, low voltage, 

over temperature, no module 

Data transmission serial cable RS232 analog modem gsm modem ethernet 

Configurable analog 

auxiliary input 

Alarm output 

Weight 



0 mV - 150 mV 

for all recorded parameters programmable 

150 g 

130 x 82 x 38 mm 

Features 

• 4 years maximum storage capacity 

(1 MByte) 

• Adjustable logging frequency 

(2… 256 minutes) 

• Loggs eight different parameters 

and relative time 

• Field adjustable setting of eight 

different alarms 

• Optional internet services for worldwide 

access 

Interfaces 

• Two RJ45 cable sockets 

• RS232 serial interface 

• Analogue sensor input 0…150 mV 

for radiation e. g. wind speed 

• Potential free alarm contact by opto 

coupler (50 V, 50 mA) 

Software Tarcom 

• Reads out data from the logger to a PC 

• List of data sets can be exported to 

EXCEL 

• Data sets are shown as graph (values 

over time) 

• Analyizes energy flows (Ah) within 

a PV hybrid system 

• Activation and selection of alarms 

• Configurates modem 

• Sets telephone number to call 

• Links charge controller to website 

www.tarcomonline.de 

• Tells the data logger at what time 

he has to call 

Displays 

1 LED 

- connected to charge controller = 

flashing green LED 

- data transmission = green LED 

24 



Accessories 

27 

60 

104 

Steca PA HS200 

Shunt 

All currents which run through the Tarom and Power Tarom charge 

controllers are measured for an accurate calculation of the battery’s 

state of charge. However there are currents which the charge controllers 

do not measure like inverters which are connected directly 

to the battery or back up generators which feed their energy directly 

into the battery. The PA HS200 shunt measures these currents 

through the “hall” effect and transmits them digitally to the Tarom 

controllers. 

Certificates 






SHS VPS COM RV HYBRID 

Shunt for (Power-)Tarom 


Consumption during standby 

Current range “battery mode” 

Current range “charge mode” 

Current range “load mode” 

10 kW SOC 

PA HS200 

10...65 V 

< 9 mA 

+/-200 A 

0...+200 A 

-200...0 A 

Measurement accuracy -20...+20 A +/-1 % 

Measurement accuracy -200...+200 A +/-3 % 

Sensor 

magnetic hall effect 


Max. admissable humidity allowed 75 % 


Weight 


Max. diameter for battery cable 


120 g 

100 x 60 x 25 mm 

19 mm 

Features 

• Works on 12 V, 24 V and 48 V 

voltage level 

• Pp to 200 A measurement 

capacity 

• Potential free current measurement 

• Communicates and stores data in 

the PA Tarcom 

• Built in “hall” sensor 

Interfaces 

• Two RJ45 cable sockets 

Operation modes 

1 “battery”: measures currents which 

run through the battery cable 

2 “load”: measures currents of external 

loads not connected 

to the charge controller 

3 “charge”: measures currents of 

back up generators 

Displays 

1 LED 

- connected to charge controller = 

flashing green LED 

- data transmission = green LED 

- uses Tarom controller’s LCD to show 

values 


2


Accessories 

34 

87 

98 

Steca PA 1 

Remote Control 

Tarom and Power Tarom charge controllers send out signals 

(125 kHz on 300 baud) which are modulated on the DC power line 

and received by Steca PA 15 remote control. These signals are information 

on the state of charge (SOC) of the battery. No additional 

cabling is required. The PA 15 has five different operation modes 

adjustable by five different jumper positions. The limited switching 

capacity of 15 Amp can be increased by an optional Steca PA EV200 

DC relay up to 200 Amp. 

Steca PA EV200 DC Relay 

SHS VPS COM RV REMOTE HYBRID 

Remote control for Tarom series 

Power supply 

DC Relay PA EV200 

Type A Type B 

720 W SOC 

10 kW 


12 V / 24 V 36 V / 48 V 

Coil voltage 

9 V to 36 V 32 V to 95 V 

Continuous current carry, max. 200 A 200 A 

Mechanical life 

Contact resistance 

1 million cycles 

0.1 - 0.3 mohms 

Temperature range 

-40 °C...+85 °C 

Weight, nominal 

0.43 kg 


63 x 80 x 72 

PA 1 

10.5 V...60 V DC, 5 mA 

Maximum current allowed 15 A ; 10 A at 40 °C; 100 A pulse < 10 µS 

Overload protection 

Wrong polarity protection 

Data transmission 

Transmission frequency 

by 15 A fuse 

fuse 

300 Baud 

125 kHz signal frequency, 

450 kHz intermediate frequency 



2.5 mm² / 4 mm² 


Weight 



110 g 

87 x 98 x 34 mm 

Certificates Steca PA 1 






Certificates Steca PA EV200 


• US and Canadian UL recognized; UL 

file no 208033 

• Manufactured in a ISO 9001 facility 

• Made in USA 

Features 

• Receives information on SOC & time 

(day / night) 

• Two field adjustable SOC thresholds 

• High reliability by electronic mosfet 

switch 

• Connects a maximum of 9 solar 

arrays in parallel 

• Optional manual load disconnect 

connected to terminal “S” 

Operation modes 

• Automatic start / stop of diesel or 

wind back up generators 

• If battery is full the excess energy production 

is switched over to additional 

loads e. g. water pump, water heater 

• Load control by priority 

• Load only operates by night 

• Acoustic prewarning before load 

disconnect 

Protections 

• Switches off load if there is no signal 

• 15 Amp fuse against reverse polarity 

of load & battery 

• wrong grounding 

• overcurrent 

26 


1 2 3 4 5 6 7 8 

PL 2085 

2 

1 

3 

charge 

stop 

4 5 

Solar Charge Station 

8 x 12V/5A 

6 

7 

8 

charge 

stop 


Charging Station 

75 

227 

365 

Steca PL 208 

Solar Charging Station 

The PL 2085 is a solar charging station which charges up to 8 leadacid 

batteries simultanously. The microprocessor controlled charging 

station recognizes the connection sequence of the batteries. The 

battery which is connected first is charged first and as soon as the 

first battery is full, it switches over to the second battery etc. 

Every battery terminal of maximum 5 Amps is a seperate DC / DC 

converter with maximum power point tracking (MPP) of the solar 

generator. Up to two battery terminals can be connected in parallel 

on the same battery. These terminals are protected against wrong 

polarity, short circuit, no load operation and overload. Batteries are 

charged to predefined IU constant current charging procedures until 

end of charge voltage is reached. Battery charging starts even 

from run down batteries at voltages higher than 5V. At night the 

charging station works in a energy saving mode and no battery data 

is lost. 

VPS 

RV 


1000 W SOC 

Solar Charging Station 

12.8 V 

LCD 

PL 208 

Number of charging terminals 8 

Current per terminal allowed 

Recommended module power in 24 V system 

Battery nominal voltage 

End of charge voltage (float) 

Boost charge voltage 

5 A 

200 - 1000 Wp 

12 V 

13.8 V 

14.7 V 



16 mm² / 25 mm² 


Weight 


2 kg 

365 x 227 x 75 mm 

Features 

• MPP tracking of solar generator 

• Simultanous charging of up to 

8 batteries 

• Up to two terminals in parallel 

operation 

• Special battery recovery (healing) 

mode 

• Built in Ah counter for each battery 

terminal 



• Module over current 

• Overcharging 


• Reverse polarity of batteries 

• No load operation 

• Short circuit 

• Electronic fuses 

Displays 

• Selection of battery terminal by 

rotating switch 

• Displays each single battery terminal 

• State of battery charging procedure 

• Battery voltage, load current 

• Ah charged into each battery 

• State of charge 

• Charge current 

• Battery defects 



Converter 

35 

88 

98 

Steca Solsum VC 

Voltage Converter 

Especially solar home systems of 12 V or 24 V require smaller voltages 

to supply loads as radios, cassette recorders or mobile phones. 

The Solsum Voltage converter is designed for supplying a large range 

of consumer electronics with capacities below 1.5 A and voltages 

below 12 V. 

Certificates 


• Manufactured in a ISO 9001 facility 

Features 

• Five field adjustable output voltages 

from 3 V to 12 V by jumper 

• High input voltage range from 

5 V to 30 V 

• Screw terminals allow universal use 

• Low self consumption 


• Overvoltage protection during 

parameter adjustment 

• Polarity reversal of battery 

• Short circuit 

• Overload 

Displays 

2 LEDs 


- shows if voltage converter is operating 

= green LED 

(2) alarm LED 

- wrong polarity = red LED 

SHS 

COM 

RV 

50 W 

Voltage Converter 

Input voltage 5 V - 30 V 1) 1) The input voltage has to be at least 2 V higher 

Output voltages 3 V; 6 V; 7.5 V; 

than the output voltage. 

9 V; 12 V 



2 mA 

(Ue = 12 V) 

Output current < 1500 mA 2) 

Max. power loss 


Weight 

Dimensions 

9 W 

2.5 mm² 

50 g 

98 x 88 x 35 mm 

2) The max. current depends on the input and 

output voltage. 

Output voltage 3 V 6 V 7.5 V 9 V 12 V 

Input voltage 12 V 1000 mA 1500 mA 1500 mA 1500 mA 1500 mA 1) 

24 V 400 mA 500 mA 500 mA 600 mA 700 mA 

28 



Converter 

49 

88 

151 

MDCI 100 

63 

163 

152 MDCI 360 

MDC / MDCI 

DC-DC Voltage Converter 

These high end DC-DC converters can be used if the DC output 

voltage of a photovoltaic system does not fit to the needs of the 

load. Since most low-voltage equipment, such as lights, multimedia 

equipment, radio communication equipment or mobile telephones, 

are designed for 12 V, the different converter types deliver a stable 

12 V supply. If for example a 12 V DC energy saving lamp is used in 

a 24 V or a 48 V system a suitable DC-DC converter must be connected 

in between the load output of the charge controller and the 

12 V energy saving lamp. 

The MDC and MDCI converters are optimally designed for the use in 

photovoltaic applications. The types with 13.6 V output voltage can 

also be used as a battery charger for a 12 V~cessory battery in an 

otherwise 24 V system. 

For security reasons the MDCI series is electrically isolated in order 

to protect the load. But even the converters of the MDC series can 

withstand high voltage spikes at the input (load dump) and therefore 

protect your appliances at the output against damaging overvoltage. 

Features 

• Great variety of different input 

voltages 

• Output for 12 V or 24 V loads 

• Maximum power 360 W 

• Efficiency of up to 90 % 

• Best reliability 


• Short circuit protection by current 

limitation 

• Overload protection by current 

limitation 

• Over-temperature protection by 

current limitation 

• Reverse input polarity protection 

Certificates 


SHS VPS COM RV 

360 W 

DC-DC Converter 

MDC 

2412- 

MDC 

2412-8 

MDC 

2412-12 

MDC 

2412-20 

MDC 

2412-30 

MDC 

1224-7 

Input voltage (V) 20-32 10-18 9-18 / 20-35 / 30-60 / 60-120 

Output voltage (V) 13.6 24 12.5 / 24 

Max. output current (A) 5 8 12 20 30 7 8 / 4 16 / 8 29 / 15 

Nominal power (W) 70 110 165 270 410 170 100 200 360 

Efficiency max. (%) 90 85 

Galvanic isolation no yes 

Cooling convection fan convection convection fan 

Ambient temp. allowed -10 °C...+40 °C -20 °C...+45 °C 

Weight (kg) 0.2 0.2 0.3 0.5 0.6 0.5 0.5 0.6 1.4 

Dimensions l x w x h (mm) 55 x 88 x 49 85 x 88 x 49 115 x 88 x 49 125 x 88 x 49 115 x 88 x 49 151 x 88 x 49 182 x 88 x 49 152 x 163 x 63 


MDCI 

100 

MDCI 

200 

MDCI 

360 



Fuel Cell 

Steca Fuel Cell 

A 2, A 0 

The Fuel Cell A 25 and A 50 are direct methanol fuel cells to be used 

in combination with a battery. The fuel cell can be fully integrated 

into the Steca hybrid system concept as a back-up generator. If additional 

power is needed the fuel cell will be automatically started. 

It recharges the battery. It comes together with the fuel tank and 

can be directly connected to a 12 V battery. The overall power is 

50 W. It is suited for small systems in which a high security concerning 

power availability is demanded. 

Features 

• Easy integration into Steca hybrid 

system 

• Plug & play solution 

• Easy fuel handling 

Displays 

• LEDs indicate the system status 

• Ah, alarms, charging procedure 

Certificates 







50 W 

Remote Power System 

SFC A 0 

Nominal power 

50 W 

DC operation voltage 

10.5 V - 14.5 V 

Consumption 

1.3 liter methanol / kWh 

Surge power 

50 W 

Standard tank 

external tank 

Additional tank 2,5 l 

2.5 l = 160 Ah 

Additional tank 5 l 

5 l = 320 Ah 

Additional tank 10 l 

10 l = 640 Ah 

Power line connection 

special adapter (included) 

Interface 

optional remote control 

Noise emission < 40 dBA (in 1 m distance) 

Bearing condition 

max. deviation from horizont 

Ambient temp. allowed -20 °C...+40 °C, system start up from +5 °C...+40 °C 


380 x 170 x 250 mm 

Weight 

ca. 6 kg without tank 


30 



Lamps 

87 

163 

100 55 

153 

Steca Solsum ESL / ESL Globe 

5 W, 7 W, 11 W / 12 V Energy Saving Lamp 

Steca designed and recently improved the electronic ballast of the 

12 V DC compact fluorescent lamp (CFL). Preheating, high electronic 

efficiency and low thermal losses increase the lifetime of the 

CFL to more than 100.000 on / off switching cycles. The Steca CFLs 

show much higher lumen efficiencies (lm/W) compared to LED or 

incandescent lamps. 

Certificates 


• Listed for Worldbank funded projects in China, Sri Lanka 

• Development in Germany 


Features 

• Brightness of 11 W CFL is comparable 

with a 60 W incandescent bulb 

• Saves up to 80 % of energy compared 

to an incandescent bulb 

• High reliabilty of more than 

100.000 on / off switching cycles 

• Easy to install by a E27 or bayonett 

socket 

• Several years of operation in the field 

• Soft lighting color by „globe“ 

design 

• Compact & robust product design 

SHS 

COM 

RV 

Steca Energy Saving Lamp ESL ESL 7 ESL 11 Globe 7 W 

Nominal current at 12 V 420 mA 580 mA 920 mA 580 mA 

Nominal voltage 12 V 12 V 

Nominal power 5 W 7 W 11 W 7 W 

Luminus flux 210 Lm (12 V) 320 Lm (12 V) 550 Lm (12 V) 308 Lm (12 V) 

Luminus efficiency 42 lm/w (12 V) 46 lm/w (12 V) 50 lm/w (12 V) 44 lm/w (12 V) 

Life span (minimal) 6,000 h 6,000 h 

Switching cycles 100,000 100,000 

Ambient temperature allowed -5 °C...+40 °C -5 °C...+40 °C 

Dimensions l x w 123 x 55 mm 133 x 55 mm 163 x 55 mm 153 x 100 mm 

Weight 125 g 135 g 150 g 

Socket E27 / Bayonett E27 

Light colour cool white (6400K) / warm white (2700K) cool white (6400K) 




Lamps 

66 

50 

42 

53 

Steca SolLed / ULed Lamp 

SolLed 0.7G, 0.7W, 0.35G, 0.35W / ULed 0.9W, 1.2W, 1.5W / 12 V LED Lamp 

LED lamps perform well in applications which demand long operation 

times in the low watt range. With 100.000 hours lifetime, 

LED lamps could last for more than 11 years by illuminating 24 h/d. 

Today‘s LED‘s have a higher light conversion efficiency than halogene 

lights. 

Certificates 


• Development in Germany 


Features 

• Luminous efficiency is twice as 

much as for halogene lamps 

• Compact & robust product design 

• Easy to install by a E27 socket 

• Low energy consumption < 2 W 

• High lifetime of 100.000 h 

SHS 

COM 

RV 

SolLed Light Emitting Lamp 

SolLed 

1000 

SolLed 

0.7G 

SolLed 

0.7W 

SolLed 

0.3G 

SolLed 

0.3W 

Nominal current at 12 V 100 mA 60 mA 30 mA 75 mA 125 mA 150 mA 

ULed 

0.9W 

ULed 

1.2W 

Nominal voltage 12.5 - 13.5 VDC 12 VDC ±20 % 12 VDC ±20 % 

Nominal power 1.1 W 0.7 W 0.35 W 0.9 W 1.2 W 1.8 W 

Luminus flux at 12 V 25 Lm 15 lm 11 lm 8 lm 6 lm 20 lm 26 lm 40 lm 

Luminus efficiency at 12 V 20 lm/w 22 lm/w 16 lm/w 22 lm/w 16 lm/w 22 lm/w 18 lm/w 22 lm/w 

Life span 50,000 h 100,000 h 50,000 h 

Ambient temperature allowed -40 °C...+70 °C -40 °C...+70 °C 

Dimensions l x w 67 x 42 mm 50 x 30 mm 45 x 55 mm 55 x 75 mm 

Weight 30 g 40 g 40 g 45 g 

Socket E27 / bayonett E27 G5.3 E27 

Light color white light G = monochrome yellow, W = multichrome white white light 


ULed 

1.8W 

32 



Sine Wave Inverter 

114 

312 

245 

Solarix Sinus 

0 I, 0 RI, 900 I, 900 RI 

Power class 

0 - 900 W 

0 W 500 W 1000 W 5000 W 10000 W 

The Solarix series of sine wave inverters has proved itself in over 

10,000 applications. These devices have been used throughout the 

world. With its compact construction and optionally integrated solar 

charge controller, this ‘plug & play’ solution is easy to install. A 

switch on the front of the device enables the user to choose between 

automatic load detection mode, continuous operation or sleep mode, 

therefore considerably reducing the standby consumption. This 

is particularly important for stand-alone systems. 


Inverter Solarix Sinus 

SOC 

550 I / 

550 RI* 

12.8 V 

LCD 

550 I-L60 / 

550 RI-L60* 

900 I / 

900 RI* 

Nominal input voltage 12 V 24 V 

Input voltage range 10.5 - 16 V 21 - 32 V 

Max. module short-circuit current* 25 A* 

Max. DC load current* 15 A* 

Output voltage 220 V~ +/-10 % 

(true sine wave) 

Output frequency 50 Hz +/-0.5 % 

optional 60 Hz 

115~ V +/-10 % 


220~ V +/-10 % 


60 Hz +/-1 % 50 Hz +/-0.5 % 

optional 60 Hz 

900 I-L60 

115~ V +/-10 % 


60 Hz +/-1 % 

Continuous power 550 VA 500 VA 900 VA 900 VA 

Maximum efficency 91.5 % 91 % 92 % 91.5 % 

Self consumption 430 mA / 50 mA / 15 mA ( on / standby / off ) 

Connection DC / AC integrated terminal block 16 mm² / 

standard AC plug + cable included 

Operating temperature -15 °C to +45 °C 

Protection class IP 20 

Weight 5.5 kg 7.5 kg 


* only by RI versions (with integrated solar charge regulator) 


312 x 245 x 114 mm 

Options 

• Types with 115 V / 60 Hz or 

220 V / 60 Hz 

Features 

• Sinewave inverter with 550 W or 

900 W 

• Inverter with optional solar charge 

controller in one device 

• High overload capabilities 

• Optimum protection of the battery 

• Automatic load detection in standby 

mode 


• Battery deep discharge protection 

• Battery over voltage shut down 

• Over temperature and over load 

protection 

• Short circuit protection 

• Reverse polarity protection by 

internal fuse 

Displays 

• Operational status inverter by 

tricolour LED 

• Optional charge regulator shows 

operational status by additional 

tricolour LED and 16-digit LCD 

display 




84 

142 

170 

AJ 275-12 

Steca AJ 

Power class 

27 - 2400 W 

0 W 500 W 1000 W 5000 W 10000 W 

27-12, 30-24, 400-48, 00-12, 600-24, 700-48, 1000-12, 1300-24, 2100-12, 2400-24 

A particular feature of the AJ inverter series is its wide range of 

available power classes and DC input voltages, enabling the optimal 

inverter to be used for any application. The cables for the 

battery and load connection are already pre-mounted on the AJ, 

thus making it easier to connect the device. The automatic standby 

mode considerably reduces the inverter’s self consumption. The AJ 

inverter’s excellent overload capacity ensures that even critical loads 

can be operated easily. 

Options 

• Types with 115 V / 50 Hz, 115 V / 60 Hz or 230 V / 60 Hz 

• Terminal for connecting of a remote control (On / Off) for the types AJ275-12 to 

AJ700-48 

• Remote Control JT8 (On / Off, LED) for AJ1000-12 to AJ2400-24 

Features 

• Power range 275 - 2,400 W 

• Suitable for all AC loads 

• Excellent overload capabilities 

• Adjustable, automatic load 

detection 






protection 



internal fuse (other than AJ2100-12) 

• Acoustic warning before battery 

low or overheating disconnection 

Displays 

• Operational status inverter by LED 


Inverter AJ 27-12 30-24 400-48 00-12 600-24 700-48 1000-12 1300-24 2100-12 2400-24 

Nominal input voltage (V) 12 24 48 12 24 48 12 24 12 24 

Input voltage range (V) 10.5 - 16 21 - 32 42 - 64 10.5 - 16 21 - 32 42 - 64 10.5 - 16 21 - 32 10.5 - 16 21 - 32 

Output voltage 

230 V~ +0 / -10 % (true sine wave) 


Continuous power (VA) 200 300 300 400 500 500 800 1000 2000 2000 

Max. power 30 min. (VA) 275 350 400 500 600 700 1000 1300 2100 2400 

Max. power 5 sec. (VA) 450 650 1000 1000 1200 1400 2200 2800 5000 5200 

Maximum efficency (%) 93 94 94 93 94 94 93 94 92 94 

Consumption Stand-by (W) 0.3 0.3 0.4 0.3 0.4 1.0 0.3 0.4 0.5 0.4 

Load detection (Stand-by) 2 W adjustable: 1 - 20 W 

Cable length Battery / AC 1.2 m / 1 m 1.5 m / 1 m 1.7 m / 1 m 


Protection class IP 30 IP 20 

Weight (kg) 2.4 2.6 4.5 8.5 19 18 

Dimensions l x w x h (mm) 170 x 142 x 84 247 x 142 x 84 455 x 142 x 84 406 x 273 x 117 


34 




124 

276 

215 

SI 824 


Power class 

612, 624, 648, 812, 824, 1212, 1224, 1248, 1624, 2324, 2348, 3324, 348 

600 - 300 W 

0 W 500 W 1000 W 5000 W 10000 W 

The Steca SI series consist of “high end” pure sine wave inverters 

for AC voltage systems. All devices offer outstanding highly precise 

output voltages and frequencies. Their automatic standby mode 

considerably reduces the inverter’s self consumption. The Steca SI 

inverters even allow to create a real 3-phased grid with 3 Steca SI 

units. This option is possible from the 1200 W type. 

Options 

• Types with 115 V / 50 Hz, 115 V / 60 Hz or 230 V / 60 Hz 

• Terminal for connecting of a remote control (On / Off) 

• Integrated potential free alarm contact (60 V / 0.5 A) 

• Protection cover SI-IP 23 to enhance the protection class 

Features 

• Nominal power range 600 – 3,500 W 

• 3-phased 3,600 – 10,500 W 


• Adjustable, automatic load 

detection 






protection 



internal fuse 

Displays 

• Operational status inverter by LEDs 


Inverter SI 612 624 648 812 824 1212 1224 1248 1624 2324 2348 3324 348 

Nominal input voltage (V) 12 24 48 12 24 12 24 48 24 24 48 24 48 

Input voltage range (V) 11.4 - 16 23.8 - 32 45.6 - 64 11.4 - 16 23.8 - 32 11.4 - 16 23.8 - 32 45.6 - 64 23.8 - 32 23.8 - 32 45.6 - 64 23.8 - 32 45.6 - 64 


230 V~ +/-3 % (pure sine wave) 


Continuous power (VA) 600 800 1200 1600 2300 3300 3500 

Max. power 15 min. (VA) 950 1250 1900 2500 3600 5200 5600 

Max. power 5 sec. (VA) 2100 2800 4200 5600 8000 11500 12000 

Maximum efficency (%) 91 92 95 95 95 95 95 

Consumption Stand-by (W) 0.3 0.5 0.5 0.3 0.5 0.3 0.5 0.5 0.5 0.6 0.8 0.6 1.4 

Load detection (Stand-by) 

adjustable: 0.3 - 20 W 

Cable length Battery / AC 

165 cm / 140 cm 


Protection class IP 20 / with optional top cover: IP 23 

Weight (kg) 6.9 10.4 13.2 15.2 27.0 30.0 38.0 

Dimensions (l) x 215 x 124 (mm) 206 276 391 391 591 636 791 



3



124 

410 

215 

XPC 2200-24 

Steca XPC 

1400-12, 2200-24, 2200-48 

Power class 

1400 - 2200 W 

0 W 500 W 1000 W 5000 W 10000 W 

The Steca XPC series of inverters feature a very high overload capacity 

that even enables them to operate highly critical loads. Other 

important features of these high-quality inverters are their powerful 

device protection and their individual low self consumption. The XP- 

Cs combine a sine wave inverter, 4-stage battery charger and transfer 

system in one device, therefore making them particularly suitable 

for hybrid systems. The in-built multifunctional contact enables 

you, for example, to switch on and off diversion loads for excess 

power or start a diesel generator to recharge batteries. 


Inverter-Charger XPC 1400-12 2200-24 2200-48 

Nominal input voltage (V) 12 24 48 

Input voltage range (V) 9.5 - 16 19 - 32 38 - 64 


230 V~ +0 / -10 % (pure sine wave) 


Continuous power (VA) 1100 1600 1600 

Max. power 30 min. (VA) 1400 2200 2200 

Max. power 5 sec. (VA) 3300 4800 4800 

Maximum efficency (%) 94 95 95 

Consumption Stand-by (W) 0.6 0.9 1.3 


adjustable: 1 - 25 W 

Charging current, adjustable (A) 0 - 45 0 - 37 0 - 20 

Minimum input voltage 

Battery monitoring 

Max. current / power on transfer system 

Switching time 

Cable length battery 

adjustable from 150 to 230 VAC 

LVD, HVD, floating and equalisation voltage 

adjustable by user via optional remote control RCC-01 

16 A / 3.7 kVA 

< 20 ms 

165 cm 


Protection class IP 20 / with optional top cover: IP 23 

Weight (kg) 11.7 12.6 

Dimensions l x w x h (mm) 410 x 215 x 124 


DC 

UPS 

AC 

Options 

• Types with 230 V / 60 Hz 

• Remote control RCC-01 

(With this additional device it is also 

possible to programme the inverter 

parameters.) 

• Protection cover C-IP 23 to enhance 

the protection class 

• Terminal protection cover CFC-01 

to avoid hazardous contacts with 

strain relief clamps 

• Temperature sensor CT35 to correct 

the operation voltages according to 

the actual battery temperature 

Features 

• Power range 1,400 - 2,200 W 

• Adjustable battery charger included 


• Adjustable, automatic load detection 

• Usable as back-up or UPS 


• Multifunction switch 





protection 



internal fuse 



Displays 

• Operational status inverter by 

7 LEDs 

36 




124 

480 

215 

C 2600-24 

Steca Compact 

1600-12, 2600-24, 4000-48 

Power class 

1600 - 4000 W 

0 W 500 W 1000 W 5000 W 10000 W 

The Steca Compact series is specially designed for hybrid systems. 

The devices consist of a sine wave inverter with a high overload 

capacity, a battery charger and a transfer system. The in-built multifunctional 

contact enables you, for example, to start a diesel generator 

to recharge batteries or to cut the power for less priority 

loads when the battery is lower than a given threshold. Even if you 

only use the device’s sine wave inverter, Steca Compact is still very 

cost effective. The integrated power sharing function ensures that 

the transfer system always provides the connected loads with the 

desired power. 


Inverter-Charger Compact 1600-12 2600-24 4000-48 

Nominal input voltage (V) 12 24 48 

Input voltage range (V) 9.5 - 16 19 - 32 38 - 64 




Continuous power (VA) 1300 2300 3500 

Max. power 30 min. (VA) 1600 2600 4000 

Max. power 5 sec. (VA) 3900 6900 10500 

Maximum efficency (%) 94 95 95 

Consumption Stand-by (W) 0.6 0.9 1.4 



Charging current, adjustable (A) 0 - 55 0 - 55 0 - 50 

lnput current balance adj., power sharing 1 - 16 A 



Max. current / power on transfer system 


Cable length battery 


LVD, HVD, floating and equalisation voltage 

adjustable by user 

16 A / 3.7 kVA 

< 20 ms 

165 cm 


Orotection class IP 20 / with optional top cover: IP 23 

Weight (kg) 16.0 17.1 29.4 

Dimensions (l) x 215 x 124 (mm) 480 480 670 


DC 

UPS 

AC 

Options 


• Remote control RCC-01 

• Protection cover C-IP 23 to enhance 

the protection class 

• Terminal protection cover CFC-01 

to avoid hazardous contacts with 

strain relief clamps 




• Remote control RPS-01 for the function 

power sharing 

Features 

• Power range 1,600 - 4,000 W 





• Adjustable power sharing 


• Multifunction switch 





protection 



internal fuse 



Displays 

• Operational status inverter and 

state of charge by 17 LEDs 

• Power monitor for topical power 

and charging current 




242 

493 

297 

HPC 8000-48 

Steca HPC 

2800-12, 4400-24, 6000-48, 8000-48 

Power class 

2800 - 8000 W 

0 W 500 W 1000 W 5000 W 10000 W 

The technology of the HPC inverter series is based on Steca Compact 

devices. However, the four different types offer considerably greater 

power. What’s more, Steca HPCs are equipped with PG screw 

fittings for strain relief and to protect all connections. The devices 

consist of a sine wave inverter, a battery charger, a transfer system 

and a voltage-free multifunctional contact. They are primarily used 

in hybrid systems. The integrated power sharing function ensures 

that the transfer system always provides the connected loads with 

the desired power. 


Inverter-Charger HPC 2800-12 4400-24 6000-48 8000-48 

Nominal input voltage (V) 12 24 48 48 

Input voltage range (V) 9.5 - 17 19 - 34 38 - 68 38 - 68 




Continuous power (VA) 2500 4000 5000 7000 

Max. power 30 min. (VA) 2800 4400 6000 8000 

Max. power 5 sec. (VA) 7500 12000 15000 21000 

Maximum efficency (%) 93 94 96 96 

Consumption stand-by (W) 1.8 2.0 2.5 3.0 

Load detection (stand-by) 


Charging current, adjustable (A) 0 - 110 0 - 100 0 - 70 0 - 90 

Input current balance adj. (A), power sharing 1 - 30 1 - 50 



Max. current / power on transfer system 30 A / 

6.9 kVA 



LVD, HVD, floating and equalisation voltage adjustable 

by user 

< 20 ms 


Protection class IP 20 

50 A / 

11.5 kVA 

Weight (kg) 33 39 41 45 

Dimensions (l) x 297 x 242 (mm) 480 493 


DC 

UPS 

AC 

Options 


• Remote Control RCC-01 




• Remote control RPS-01 for the function 

power sharing 

Features 

• Power range 2,800 - 8,000 W 





• Adjustable power sharing 






protection 



internal fuse 



Displays 

• Operational status inverter and 

state of charge by 17 LEDs 

• Power monitor for topical power 

and charging current 

38 



Inverter Selection Matrix 

Single Phase Inverters 


Steca AJ 


Voltage 

48 

24 

12 

200 500 1,000 2,000 5,000 10,000 

Watt AC Power 

Inverters for Three Phase Systems 

Steca SI xxxx PE 

Voltage 

48 

24 

12 

200 500 1,000 2,000 5,000 10,000 

Watt AC Power 

Inverter - Chargers 

Steca XPC Steca Compact Steca HPC 

Voltage 

48 

24 

12 

200 500 1,000 2,000 5,000 10,000 

Watt AC Power 

Disclaimer 

STECA GmbH reserves the right to add, modify or discontinue products which are shown in the catalogue. Please return to STECA if you need further and updated 

product information. The information contained in this catalogue is not comprehensive. Despite our efforts, it may not be accurate, up to date or applicable to the 

circumstances of any particular case. We cannot accept any liability for any inaccuracies or omissions in this catalogue. 

STECA is a worldwide protected trademark of STECA GmbH Germany, registered by the International Bureau of the World Intellectual Property Organization (WIPO) 

in Switzerland by certificate of registration no 743570. You may not use this trademark without our express permission. Your use of this catalogue and the operation 

of these terms and conditions shall be governed in accordance with the laws of the Federal Republic of Germany. 


Steca Services 

www.stecasolar.com 

Steca GmbH 

Mammostrasse 1 

D-87700 Memmingen 

Germany 

Tel.: +49(0)833185580 

Fax.: +49(0)8331855812 

715.261 - 15/2006 

© 2005 Steca GmbH

Steca PR - GRYPS

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