Brochure

SIRIUS
Siemens Industry, Inc. Industrial Control Product Catalog 2017
2/17
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
3/56
SIRIUS Innovations Supplement 2012
Illustrations are approximate
3
Selection and ordering data
DC operation · DC solenoid system
Spring-type terminals
For screw and snap-on mounting onto standard mounting rail
Solenoid coil fitted with suppressor diode (S00)
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.
2)
One 4-pole auxiliary switch block according to EN 50005 can be mounted;
no distance required up to 70 °C.
3)
NC contact cannot be used because it is required for switching the series
resistor.
4)
Versions available with screw terminals.
3RT20 1 . -2K . 4 . 3RT20 1 . -2K . 42-0LA0
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 S00
Without series resistor
4)
Terminal designations according to EN 50012 or EN 50005
• 1 NO, identification number 10E
• 1 NC, identification number 01
12 -- 3 7.5 10 10E
1)
1 -- 24 3RT20 17-2KB41 0.300
125
3RT20 17-2KG41 0.300
12 -- 3 7.5 10 01
1)
-- 1 24 3RT20 17-2KB42 0.300
125
3RT20 17-2KG42 0.300
With series resistor
12 -- 3 7.5 10 --
2)
-- 1
3)
24 3RT20 17-2KB42-0LA0 0.300
125
3RT20 17-2KG42-0LA0 0.300
16 -- 5 10 10 --
2)
-- 1
3)
24 3RT20 18-2KB42-0LA0 0.300
125
3RT20 18-2KG42-0LA0 0.300
A1(+)
A2(–)
14
13
2/T1
1/L1
4/T2
3/L2
6/T3
5/L3
A1(+)
A2(–)
22
21
2/T1
1/L1
4/T2
3/L2
6/T3
5/L3
A1(+)
A2(–)
2/T1
1/L1
4/T2
3/L2
6/T3
5/L3
U
s
LV1N_03_06.fm Page 56 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
Product Category IEC