Brochure

SIRIUS
Siemens Industry, Inc. Industrial Control Product Catalog 2017
2/18
2
COnTACTORS And
ASSEMbliES
3RT, 3RH Contactors for Special Applications
Contactors with Extended Operating Range 0.7 ... 1.25 x , for Railway Applications
3RT20 motor contactors, 7.5 ... 25 HP
3/57
SIRIUS Innovations Supplement 2012
Illustrations are approximate
3
DC operation · DC solenoid system
Spring-type terminals
For screw and snap-on mounting onto standard mounting rail
Solenoid coil fitted with varistor (S0)
For accessories and spare parts, see page 3/93.
1)
It is not possible to mount an auxiliary switch block. A clearance of 10 mm
is required for side-by-side mounting at ambient temperatures > 60 °C.
More information
All specs and technical specs not mentioned here are identical
to those of the standard contactors for switching motors.
3RT20 2. -2K . 4 0 3RT20 2 . -2X . 40-0LA2
Rated data
AC-3
Auxiliary contacts Rated control
supply voltage
U
s
Spring-type terminals Weight
approx.
Operational
current 
e
at
Ratings of
induction motors
at
Ident.
No.
Version
Order No.
400 V 200 V 230 V 460 V 575 V
A HP HP HP HP NO NC V DC
kg
3RT20 contactors for switching motors
Size S0
Terminal designations according to EN 50012
1 NO + 1 NC, identification number 11E
Without series resistor
1)
16 -- 5 10 15 11E 1 1 24 3RT20 25-2KB40 0.600
125
3RT20 25-2KG40 0.600
25 -- 7.5 15 20 11E 1 1 24
3RT20 26-2KB40 0.600
125
3RT20 26-2KG40 0.600
32 -- 10 20 25 11E 1 1 24
3RT20 27-2KB40 0.600
125
3RT20 27-2KG40 0.600
With solid-state operating mechanism
16 -- 5 10 15 11E 1 1 24 3RT20 25-2XB40-0LA2 0.580
125
3RT20 25-2XG40-0LA2 0.580
25 -- 7.5 15 20 11E 1 1 24
3RT20 26-2XB40-0LA2 0.580
125
3RT20 26-2XG40-0LA2 0.580
32 -- 10 20 25 11E 1 1 24
3RT20 27-2XB40-0LA2 0.580
125
3RT20 27-2XG40-0LA2 0.580
38 -- 10 25 25 11E 1 1 24
3RT20 28-2XB40-0LA2 0.580
125
3RT20 28-2XG40-0LA2 0.580
A1(+)
A2(–)
22
21
14
13
2/T1
1/L1
4/T2
3/L2
6/T3
5/L3
epyTsrotcatnoC 3RT20 17 3RT20 2. 3RT20 2.-2XB40-
0LA2
3RT20 2.-2XF40-
0LA2
Ambient temperature
C°noitarepo gniruD• -40 ... +70
C°egarots gniruD• -55 ... +80
Solenoid coil operating range DC 0.7 ... 1.25 x U
s
0.7 ... 1.3 x U
s
Power consumption of the solenoid coils For cold coil and 1.0 x U
s
• Contactors with series resistor - Closing W 13 -- -- --
- Closed W
4 -- -- --
• Contactors without series resistor - Closing W
2.8 4.5 -- --
- Closed W
2.8 4.5 -- --
• Contactors with solid-state operating
mechanism
- Closing W
-- -- 6.7 13.2
- Closed W
-- -- 0.8 1.56
U
s
LV1N_03_06.fm Page 57 Thursday, October 31, 2013 11:31 AM
For accessories and spare parts, see page 2/66- 2/69.
Contactors and Contactor Assemblies
3RT, 3RH Contactors for Special Applications
3RT20 motor contactors, 7.5 ... 25 HP