Siemens Overload Relay 3NO/NC, 10 A, 30 V dc

  • RS Stock No. 745-0590
  • Mfr. Part No. 3RH1131-1BC40
  • Manufacturer Siemens
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): AU
Product Details

Contactor Relays - 3RH1 Range

Climate-proof, finger safe contactor relays. RC elements, varistors, diodes or diode assemblies (combination of a diode and a Zener diode) can be plugged onto all contactor relays for damping opening surges in the coil.

Size S00
High degree if contact stability at low voltages & current
Suitable for use with solid-state circuits with currents ≥ 1 mA at a voltage of ≥ 17 V
Capable of expansion by up to four contacts through use of snap-on auxiliary switch blocks


The OFF-delay of the NO contact and the ON-delay of the NC contact are increased if the contactor coils are attenuated against voltage peaks (noise suppression diode 6 to 10 times; diode assemblies 2 to 6 times, varistor +2 to 5 ms).


IEC 60947-1, EN 60947-1, IEC 60947-4-1, EN 60947-4-1, IEC 60947-5-1, EN 60947-5-1.


UL listed / UL listed for Canada

Siemens Sirius Range Contactor & Control Relays

Attribute Value
Control Voltage 30 V dc
Contact Current Rating 10 A
Pole Configuration 4P
Range Sirius Classic
Contact Voltage Rating 220 V dc, 690 V ac
Mounting Style Snap-On
Series 3RH1
Normal State Configuration 3NO/NC
Number Of Auxiliary Contacts 4
Terminal Type Screw
Depth 72mm
Length 45mm
Width 57.5mm
Minimum Operating Temperature -25°C
Operating Temperature Range -25 → +60 °C
Maximum Operating Temperature +60°C
Discontinued product