Catalog LV1 T 2009 Chapter 3 EN

1) For more information about short-circuit values, e. g. for protection against
short-circuit currents, see the UL guides (Order No.: A5E02118883 for
German) or UL reports (http://www.siemens.com/lowvoltage/support) for
the individual devices.
© Siemens AG 2009
3RT, 3TB, 3TF Contactors for Switching Motors
3RT10 contactors, 3-pole, 3 ... 250 kW
Contactors Type 3RT10 15 3RT10 16 3RT10 17 3RT10 23 3RT10 24 3RT10 25 3RT10 26
Size S00 S00 S00 S0 S0 S0 S0
s and u ratings
Rated insulation voltage V AC 600 600
Uninterrupted current, at 40 °C
Maximum horsepower ratings
(s and u approved values)
Open and enclosed A 20 35
Rated power for induction motors
At 200 V hp 1.5 2 3 2 3 5 7.5
at 60 Hz
230 V hp 2 3 3 3 3 5 7.5
460 V hp 3 5 7.5 5 7.5 10 15
575 V hp 5 7.5 10 7.5 10 15 20
Short-circuit protection 1)
At 600 V kA 5 5 5 5 5 5 5
(contactor or overload relay) CLASS RK5 fuse A 60 60 60 70 70 70 100
Circuit breakers with overload
protection acc. to UL 489
A 50 50 50 70 70 70 100
Combination motor controllers
type E acc. to UL 508
-At 480V Type-- -- -- 3RV10 2
A -- -- -- 8 10 16 22
kA -- -- -- 65 65 65 65
-At 600V Type-- -- -- 3RV10 2
A -- -- -- 8 10 12.5 12.5
kA -- -- -- 25 25 25 25
NEMA/EEMAC ratings
NEMA/EEMAC size hp -- 0 -- 1
Uninterrupted current - Open A -- 18 -- 27
-Enclosed A -- 18 -- 27
Rated power for induction motors
At 200 V hp -- 3 -- 7.5
at 60 Hz
230 V hp -- 3 -- 7.5
460 V hp -- 5 -- 10
575 V hp -- 5 -- 10
Overload relay Type 3RU11 16 3RU11 2
Setting range A 0.11 ... 12 1.8 ... 25
Contactors Type 3RT10 34 3RT10 35 3RT10 36 3RT10 44 3RT10 45 3RT10 46
Size S2 S2 S2 S3 S3 S3
s and u ratings
Rated insulation voltage V AC 600 600
Uninterrupted current, at 40 °C
Maximum horsepower ratings
(s and u approved values)
Open and enclosed A 45 55 50 90 105 105
Rated power for induction motors
At 200 V hp 10 10 15 20 25 30
at 60 Hz
230 V hp 10 15 15 25 30 30
460 V hp 25 30 40 50 60 75
575 V hp 30 40 50 60 75 100
Short-circuit protection1) At 600 V kA 5 5 5 10 10 10
(contactor or overload relay) CLASS RK5 fuse A 125 150 200 250 300 350
Circuit breakers with overload protection
acc. to UL 489
A 125 150 200 250 300 400
Combination motor controllers
type E acc. to UL 508
-At 480V Type3RV10 3 3RV10 4
A 32 40 50 63 75 100
kA 65 65 65 65 65 65
-At 600V Type3RV10 4 3RV10 4
A 32 40 50 63 75 75
kA 25 25 25 30 30 30
NEMA/EEMAC ratings
NEMA/EEMAC size hp -- 2 -- 3
Uninterrupted current - Open A -- 45 -- 90
-Enclosed A -- 45 -- 90
Rated power
At 200 V hp -- 10 -- 25
for induction motors with 60 Hz
230 V hp -- 15 -- 30
460 V hp -- 25 -- 50
575 V hp -- 25 -- 50
Overload relay Type 3RU11 3 3RU11 4
Setting range A 5.5 ... 50 18 ... 100
Siemens LV 1 T · 2009
3/53
3