Catalog LV1 T 2009 Chapter 3 EN

3
3RT, 3TB, 3TF Contactors for Switching Motors
3RT10 contactors, 3-pole, 3 ... 250 kW
Contactors Size S00 S0 ... S12
s and u ratings of the auxiliary contacts
1) For more information about short-circuit values, e. g. for protection against
short-circuit currents, see the UL guide (Order No.: A5E02118883 for
German) or UL reports (http://www.siemens.com/lowvoltage/support) for
the individual devices.
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Siemens LV 1 T · 2009
Screw terminals and
Cage Clamp terminals
Integrated or
snap-on
auxiliary switch block
Screw terminals and
Cage Clamp terminals
1- and 4-pole
snap-on
auxiliary switch block
Screw terminals and
Cage Clamp terminals
Laterally
mountable
auxiliary switch block
Rated voltage V AC 600 600 600
Switching capacity A 600, Q 600 A 600, Q 600 A 300, Q 300
Uninterrupted current
at 240 V AC A 10 10 10
Contactors Type 3RT10 54 3RT10 55 3RT10 56 3RT10 64 3RT10 65 3RT10 66
Size S6 S6 S6 S10 S10 S10
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 140 195 195 250 330 330
Rated power for induction motors
At 200 V hp 40 50 60 60 75 100
at 60 Hz
230 V hp 50 60 75 75 100 125
460 V hp 100 125 150 150 200 250
575 V hp 125 150 200 200 250 300
Short-circuit protection1) At 600 V kA 10 10 10 10 18 18
CLASS RK5/L fuse A 450 500 500 700 800 800
Circuit breakers with overload
protection acc. to UL 489
A 350 450 500 500 700 800
NEMA/EEMAC ratings
NEMA/EEMAC size hp -- 4 -- -- -- 5
Uninterrupted current - Open A -- 150 -- -- -- 300
- Enclosed A -- 135 -- -- -- 270
Rated power
for induction motors
with 60 Hz
At 200 V hp -- 40 -- -- -- 75
230 V hp -- 50 -- -- -- 100
460 V hp -- 100 -- -- -- 200
575 V hp -- 100 -- -- -- 200
Overload relay Type 3RB20 56 3RB20 66
Contactors Type 3RT10 75 3RT10 76
Size S12 S12
s and u ratings
Rated insulation voltage V AC 600
Uninterrupted current, at 40 °C
Maximum horsepower ratings
(s and u approved values)
Open and enclosed A 400 540
Rated power for induction motors
At 200 V hp 125 150
at 60 Hz
230 V hp 150 200
460 V hp 300 400
575 V hp 400 500
Short-circuit protection 1)
At 600 V kA 18 30
CLASS L fuse A 1000 1200
Circuit breakers with overload protection
acc. to UL 489
A 900 900
NEMA/EEMAC ratings
NEMA/EEMAC size hp -- 6
Uninterrupted current - Open A -- 600
- Enclosed A -- 540
Rated power for induction motors
at 60 Hz
© Siemens AG 2009
Overload relay Type 3RB20 66
At 200 V hp -- 150
230 V hp -- 200
460 V hp -- 400
575 V hp -- 400