Contactor Overload Relays

RS Components wide range of contactor overload relays protect machinery from overheating, this includes the machine itself and the bearings, gears and coolants as the relay receives the corresponding signal and trips.

Our contactor overload relays come from trusted and well known brands helping us provide quality products for all of our customers needs.

What is a Contactor Overload Relay?

Often referred to as an overload relay, these high quality contactor overload relays offer motor control within a multitude of environments. Designed to help your motor carry on working in a safe environment they give you the peace of mind that you have sufficient motor protection when using electrical motors. Predominantly designed for imitating the heating prototypes they are a staple for keeping your motors healthy.

Also featured within our range of contactor overload relays are the thermal overload relays. A thermal overload relay is a protective device which cuts the power whenever the motor uses too much current for a long period of time. These devices are directly related to circuit breakers, in design and in application. The difference being that a circuit breaker will disturb the circuit if an overload occurs for just a second, whereas a thermal overload will cut the power after a prolonged period of time.

Applications of a Contactor Overload Relay

  • The majority of the time is to protect a motor
  • To detect both overload conditions and fault conditions to then announce trip command for a protective device
  • To deactivate a device whenever it pulls high current
  • Sometimes developed into microprocessor systems and solid-state electronics

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Description Price FLC Motor Rating Control Voltage Contact Current Rating Pole Configuration Range Contact Voltage Rating Mounting Style Supply Voltage Series Normal State Configuration Number Of Auxiliary Contacts Power Rating Reset Method Terminal Type
RS Stock No. 746-0730
Mfr. Part No.3RH2122-1AF00
BrandSiemens
TWD1,479.00
Each
units
- - 10 A - SIRIUS Innovation 690 V ac - - 3RH2 2NO/2NC - - - Screw
RS Stock No. 746-0759
Mfr. Part No.3RH2140-1AP00
BrandSiemens
TWD1,479.00
Each
units
- - 10 A - SIRIUS Innovation 690 V ac - - 3RH2 4NO 4 - - Screw
RS Stock No. 122-9449
Mfr. Part No.3RT2026-1AL20
BrandSiemens
TWD3,318.00
Each
units
22 A 230 V ac 40 A 3P Sirius Innovation 690 V DIN Rail Mount, Snap On - 3RT2 3NO 2 - - Screw
RS Stock No. 746-0743
Mfr. Part No.3RH2131-1BB40
BrandSiemens
TWD1,092.00
Each
units
- - 10 A - SIRIUS Innovation 690 V ac - - 3RH2 3NO/1NC 4 - - Screw
RS Stock No. 746-0749
Mfr. Part No.3RH2131-1AP00
BrandSiemens
TWD1,479.00
Each
units
- - 10 A - SIRIUS Innovation 690 V ac - - 3RH2 3NO/1NC 4 - - Screw
RS Stock No. 746-0733
Mfr. Part No.3RH2122-1AP00
BrandSiemens
TWD1,479.00
Each
units
- - 10 A - SIRIUS Innovation 690 V ac - - 3RH2 2NO/2NC - - - Screw
RS Stock No. 122-9420
Mfr. Part No.3RH2140-2BB40
BrandSiemens
TWD1,711.00
Each
units
- 24 V dc 10 A 4P Sirius Innovation 690 V DIN Rail Mount, Snap On - 3RH2 4NO 4 - - Screw
RS Stock No. 122-9436
Mfr. Part No.3RT2016-1JB42
BrandSiemens
TWD1,972.00
Each
units
9 A 24 V dc 22 A 3P Sirius Innovation 690 V DIN Rail Mount, Snap On - 3RT2 3NO 1 - - Screw
RS Stock No. 751-8860
Mfr. Part No.3RB2066-1MC2
BrandSiemens
TWD21,282.00
Each
units
- - 4 A 3P Sirius Classic 220 V dc, 230 V ac - - 3RB NO/NC 2 250 kW - Screw
RS Stock No. 706-1535
Mfr. Part No.3RU2116-1AB0
BrandSiemens
TWD1,340.00
Each
units
1.1 → 1.6 A - 1.6 A 3P Sirius Innovation 690 V ac Direct Contactor - 3RU NO/NC 2 0.55 kW Automatic, Manual Screw
RS Stock No. 638-7432
Mfr. Part No.3RB2056-1FC2
BrandSiemens
TWD11,302.00
Each
units
50 → 200 A - 315 A 3P Sirius Classic 1 kV ac Direct Contactor - 3RB NO/NC 2 90 kW Automatic, Manual Screw
RS Stock No. 122-9438
Mfr. Part No.3RT2016-2JB41
BrandSiemens
TWD1,972.00
Each
units
9 A 24 V dc 22 A 3P Sirius Innovation 690 V DIN Rail Mount, Snap On - 3RT2 3NO 1 - - Cage Clamp
RS Stock No. 136-3672
Mfr. Part No.3RH2140-2LB40
BrandSiemens
TWD1,984.00
Each
units
- 24 V dc 10 A 4P Sirius Innovation 600 V dc, 690 V ac DIN Rail Mount 24 V dc 3RH2 4NO 4 2.8 W - Spring Load
RS Stock No. 122-9421
Mfr. Part No.3RH2140-2JB40
BrandSiemens
TWD1,976.00
Each
units
- 24 V dc 10 A 4P Sirius Innovation 690 V DIN Rail Mount, Snap On - 3RH2 4NO 4 - - Screw
RS Stock No. 202-1636
Mfr. Part No.3RB3046-1XB0
BrandSiemens
TWD10,300.00
Each
units
115 A 1000 V 4 A 3 SIRIUS - - - - - - 90 kW - -
RS Stock No. 122-9422
Mfr. Part No.3RH2244-1AP00
BrandSiemens
TWD2,421.00
Each
units
- 230 V ac 10 A 4P Sirius Innovation 690 V DIN Rail Mount, Snap On - 3RH2 4NO/4NC 8 - - Screw
New
RS Stock No. 213-0555
Mfr. Part No.3RH2122-2LF40-0LA0
BrandSiemens
TWD2,946.00
Each
units
- 110 V dc 3 A 3P SIRIUS - - - - 1NC/2NO - - - -
New
RS Stock No. 216-6002
Mfr. Part No.3RU2116-4AC1
BrandSiemens
TWD2,561.00
Each
units
16 A 690 V 16 A - Sirius - - - - - - 7.5 kW, 11 kW - -
RS Stock No. 136-3673
Mfr. Part No.3RH2244-2BB40
BrandSiemens
TWD2,625.00
Each
units
- 24 V dc 10 A 8P Sirius Innovation 600 V dc, 690 V ac DIN Rail Mount 24 V dc 3RH2 4NO/4NC 4 4 W - Spring Load
RS Stock No. 136-3678
Mfr. Part No.3RH2422-1BM40
BrandSiemens
TWD3,656.00
Each
units
- 220 V dc 10 A 4P Sirius Innovation 600 V dc, 690 V ac DIN Rail Mount 220 V dc 3RH2 2NO/2NC 2 4 W - Screw