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 Interface Supply Voltage Series Normal State Configuration Number Of Auxiliary Contacts Power Rating Reset Method
RS Stock No. 638-7432
Mfr. Part No.3RB2056-1FC2
BrandSiemens
£163.56
Each
Units
50 → 200 A - 315 A 3P Sirius Classic 1 kV ac Direct Contactor - - 3RB 1NO/1NC 2 90 kW Automatic, Manual
RS Stock No. 706-1601
Mfr. Part No.3RU2126-1CB0
BrandSiemens
£36.12
Each
Units
1.8 → 2.5 A - 2.5 A 3P Sirius Innovation 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 1.5 kW Automatic, Manual
RS Stock No. 746-0743
Mfr. Part No.3RH2131-1BB40
BrandSiemens
£26.84
Each
Units
- - 10 A - SIRIUS Innovation 690 V ac - - - 3RH2 3NO/1NC 4 - -
RS Stock No. 746-0737
Mfr. Part No.3RH2122-1BB40
BrandSiemens
£26.84
Each
Units
- - 10 A - SIRIUS Innovation 690 V ac - - - 3RH2 2NO/2NC - - -
RS Stock No. 746-0733
Mfr. Part No.3RH2122-1AP00
BrandSiemens
£23.17
Each
Units
- - 10 A - SIRIUS Innovation 690 V ac - - - 3RH2 2NO/2NC - - -
RS Stock No. 746-0768
Mfr. Part No.3RH2140-1BB40
BrandSiemens
£26.84
Each
Units
- - 10 A - SIRIUS Innovation 690 V ac - - - 3RH2 4NO 4 - -
RS Stock No. 706-1532
Mfr. Part No.3RU2116-1BB0
BrandSiemens
£33.59
Each
Units
1.4 → 2 A - 2 A 3P Sirius Innovation 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 0.75 kW Automatic, Manual
RS Stock No. 746-0730
Mfr. Part No.3RH2122-1AF00
BrandSiemens
£23.17
Each
Units
- - 10 A - SIRIUS Innovation 690 V ac - - - 3RH2 2NO/2NC - - -
RS Stock No. 706-0762
Mfr. Part No.3RB3016-1SB0
BrandSiemens
£59.39
Each
Units
3 → 12 A - 12 A 3P Sirius Innovation 690 V ac Direct Contactor - - 3RB 1NO/1NC 2 5.5 kW Automatic, Manual
RS Stock No. 735-2796
Mfr. Part No.3TH2262-0BB4
BrandSiemens
£79.73
Each
Units
- - 4 A - SIRIUS Innovation 500 V ac - - - 3TH2 6NO/2NC 8 - -
RS Stock No. 706-1557
Mfr. Part No.3RU2116-1DB0
BrandSiemens
£33.59
Each
Units
2.2 → 3.2 A - 3.2 A 3P Sirius Innovation 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 1.1 kW Automatic, Manual
RS Stock No. 746-0761
Mfr. Part No.3RH2140-1BF40
BrandSiemens
£26.84
Each
Units
- - 10 A - SIRIUS Innovation 690 V ac - - - 3RH2 4NO 4 - -
RS Stock No. 243-6849
Mfr. Part No.3RU1116-1BB0
BrandSiemens
£36.57
Each
Units
1.4 → 2 A - 2 A 3P Sirius Classic 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 0.75 kW Automatic, Manual
RS Stock No. 746-0759
Mfr. Part No.3RH2140-1AP00
BrandSiemens
£23.17
Each
Units
- - 10 A - SIRIUS Innovation 690 V ac - - - 3RH2 4NO 4 - -
RS Stock No. 243-6833
Mfr. Part No.3RU1116-1AB0
BrandSiemens
£34.98
Each
Units
1.1 → 1.6 A - 1.6 A 3P Sirius Classic 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 0.55 kW Automatic, Manual
RS Stock No. 243-6928
Mfr. Part No.3RU1116-1JB0
BrandSiemens
£36.57
Each
Units
7 → 10 A - 10 A 3P Sirius Classic 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 4 kW Automatic, Manual
RS Stock No. 751-8860
Mfr. Part No.3RB2066-1MC2
BrandSiemens
£315.46
Each
Units
- - 4 A 3P Sirius Classic 220 V dc, 230 V ac - - - 3RB 1NO/1NC 2 250 kW -
RS Stock No. 706-1544
Mfr. Part No.3RU2116-1CB0
BrandSiemens
£33.59
Each
Units
1.8 → 2.5 A - 2.5 A 3P Sirius Innovation 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 0.75 kW Automatic, Manual
RS Stock No. 243-6811
Mfr. Part No.3RU1116-0JB0
BrandSiemens
£36.57
Each
Units
0.7 → 1 A - 1 A 3P Sirius Classic 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 0.25 kW Automatic, Manual
RS Stock No. 706-1535
Mfr. Part No.3RU2116-1AB0
BrandSiemens
£33.59
Each
Units
1.1 → 1.6 A - 1.6 A 3P Sirius Innovation 690 V ac Direct Contactor - - 3RU 1NO/1NC 2 0.55 kW Automatic, Manual