Coupling Relays - Siemens SIRIUS 3RT Series System Manual

2.8.3.2

Coupling relays

3RH21 auxiliary coupling relays for switching auxiliary circuits
Technical data for 3RH21 auxiliary coupling relays
Unless listed below, the technical data is the same as that for 3RH21 auxiliary contactor
relays.
Table 2- 106 Technical data for 3RH21..-.HB40, 3RH21..-.JB40, 3RH21..-.KB40 contactors
Type
Size
Magnet coil operating range
Magnet coil power input (with cold
coil)
Switch-on power = holding power
At U = 17 V
S
At U = 24 V
S
At U = 30 V
S
Permissible residual current
of electronics with 0 signal
Magnet coil suppressor circuit
Switching times
Switching on at 17 V
- ON-delay NO
- OFF-delay NC
At 24 V
- ON-delay NO
- OFF-delay NC
At 30 V
- ON-delay NO
- OFF-delay NC
Switching off at 17 to 30 V
- OFF-delay NO
- ON-delay NC
Vertical mounting position
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
SIRIUS 3RT2 contactors/contactor assemblies
3RH21..-.HB40
S00
0.7 to 1.25 x U
S
W 1.4
W 2.8
W 4.4
< 10 mA x (24 V/U
Without
overvoltage
attenuation
ms 40 ... 130
ms 30 ... 80
ms 35 ... 60
ms 25 ... 40
ms 25 ... 50
ms 13 ... 30
ms 70 ... 20
ms 20 ... 30
Please contact your local Siemens office for advice
2.8 Technical data
3RH21..-.JB40 3RH21..-.KB40
)
S
With diode Suppressor diode
38 ... 65 7 ... 20
55 ... 75 20 ... 30
267