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