Siemens SIRIUS 3RT - Coupling Relays

Configuration
6.10 Contactors with extended operating range
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
116 Manual, 09/2017, A5E03656507120A/RS-AE/006
6.10.2
Coupling relays
Applications
The coupling relays (24 V DC solenoid coil) have been adapted to the specific demands
associated with system-compatible interaction with electronic controls, thanks to their
extended operating range and reduced coil power.
These are versions of the 3RT20/3RH21 contactor ranges, which are characterized by the
following features:
Wide voltage range of the solenoid coil
Coupling
relay
version
Size
0.7 ... 1.25 x U
S
0.8 ... 1.85 x U
S
0.7 ... 1.20 x U
S
0.8 ... 1.20 x U
S
Switch-
on
power =
holding
power
Article number
Switch-
on
power =
holding
power
Article number
Switch-
on
power =
holding
power
Article
number
Switch-
on
power =
holding
power
Article
number
3RH21
contactor
relay
S00 2.8 W at
24 V
3RH21..-.HB40
(without RC
circuit)
3RH21..-.JB40
(with diode)
3RH21..-.KB40
(with
suppressor
diode)
1.6 W at
24 V
3RH21..-.MB40-0K
T0 (without RC
circuit)
3RH21..-.VB40
(with diode)
3RH21..-.WB40
(with suppressor
diode)
-- --
3RT20
motor
contactor
S00 2.8 W at
24 V
3RT201.-.H.
(without RC
circuit)
3RT201.-.J.
(with diode)
3RT201.-.K.
(with
suppressor
diode)
1.8 W at
24 V
3RT201.-.M.
(without RC circuit)
3RT201.-.V.
(with diode)
3RT201.-.S.
(with suppressor
diode)
-- --
S0 4.5 W at
24 V
3RT202.-
1KB40
(with varistor)
-- -- --
S2 -- -- -- 1.0 W at
24 V
3RT203.-
.KB4.
(with
varistor)
--
S3 -- -- -- -- -- 0.9 W at
24 V
3RT204.
-.KB4.
Note
The 3RT20/3RH21
coupling relays cannot be expanded by means of auxiliary switch blocks.