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. 866-5882
Mfr. Part No.3RH2244-1AK60
BrandSiemens
HK$401.24
Each
units
- - 6 A - SIRIUS Innovation 690 V ac @ 1 A - - 3RH2 4NO/4NC 8 - - Screw
RS Stock No. 638-7432
Mfr. Part No.3RB2056-1FC2
BrandSiemens
HK$2,992.49
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. 706-1572
Mfr. Part No.3RU2116-1GC0
BrandSiemens
HK$421.68
Each
units
4.5 → 6.3 A - 6.3 A 3P Sirius Innovation 690 V ac Direct Contactor - 3RU NO/NC 2 2.2 kW Automatic, Manual Cage Clamp
RS Stock No. 243-6849
Mfr. Part No.3RU1116-1BB0
BrandSiemens
HK$318.17
Each
units
1.4 → 2 A - 2 A 3P Sirius Classic 690 V ac Direct Contactor - 3RU NO/NC 2 0.75 kW Automatic, Manual Screw
RS Stock No. 243-6811
Mfr. Part No.3RU1116-0JB0
BrandSiemens
HK$418.82
Each
units
0.7 → 1 A - 1 A 3P Sirius Classic 690 V ac Direct Contactor - 3RU NO/NC 2 0.25 kW Automatic, Manual Screw
RS Stock No. 746-0721
Mfr. Part No.3RH2122-1AB00
BrandSiemens
HK$396.41
Each
units
- - 10 A - SIRIUS Innovation 690 V ac - - 3RH2 2NO/2NC - - - Screw
RS Stock No. 706-1636
Mfr. Part No.3RU2126-1GB0
BrandSiemens
HK$402.23
Each
units
4.5 → 6.3 A - 6.3 A 3P Sirius Innovation 690 V ac Direct Contactor - 3RU NO/NC 2 4 kW Automatic, Manual Screw
RS Stock No. 746-0733
Mfr. Part No.3RH2122-1AP00
BrandSiemens
HK$404.94
Each
units
- - 10 A - SIRIUS Innovation 690 V ac - - 3RH2 2NO/2NC - - - Screw
RS Stock No. 746-0737
Mfr. Part No.3RH2122-1BB40
BrandSiemens
HK$363.30
Each
units
- - 10 A - SIRIUS Innovation 690 V ac - - 3RH2 2NO/2NC - - - Screw
RS Stock No. 875-1078
Mfr. Part No.3RU2136-4HB0
BrandSiemens
HK$1,514.75
Each
units
50 A - 50 A 3P Sirius Innovation 690 V Direct Mount - 3RU2 1NO/1NC 2 - Automatic, Manual Screw
RS Stock No. 706-1579
Mfr. Part No.3RU2116-1GB0
BrandSiemens
HK$421.68
Each
units
4.5 → 6.3 A - 6.3 A 3P Sirius Innovation 690 V ac Direct Contactor - 3RU NO/NC 2 2.2 kW Automatic, Manual Screw
RS Stock No. 751-5990
Mfr. Part No.3RU2126-4PB0
BrandSiemens
HK$1,035.62
Each
units
- - 3 A 3P Sirius Innovation 220 V dc, 400 V ac - - 3RU NO/NC 2 18.5 kW Automatic, Manual Screw
RS Stock No. 706-1623
Mfr. Part No.3RU2126-1FB0
BrandSiemens
HK$450.39
Each
units
3.5 → 5 A - 5 A 3P Sirius Innovation 690 V ac Direct Contactor - 3RU NO/NC 2 4 kW Automatic, Manual Screw
RS Stock No. 751-5978
Mfr. Part No.3RU1116-0KB1
BrandSiemens
HK$1,095.78
Each
units
- - 3 A 3P Sirius Classic 220 V dc, 400 V ac - - 3RU NO/NC 2 - - Screw
RS Stock No. 136-3670
BrandSiemens
HK$458.72
Each
units
- 220 V dc 10 A 4P Sirius Innovation 600 V dc, 690 V ac DIN Rail Mount 220 V dc 3RH2 4NO 4 4 W - Spring Load
RS Stock No. 875-1030
Mfr. Part No.3RB3036-1UB0
BrandSiemens
HK$1,559.91
Each
units
50 A - 50 A 3P Sirius Innovation 690 V Direct Mount - 3RB 1NO/1NC 2 - Automatic, Manual Screw
New
RS Stock No. 213-1132
Mfr. Part No.3RU2116-4AB1
BrandSiemens
HK$699.76
Each
units
16 A 690 V 16 A - Sirius - - - - - - 7.5 kW, 11 kW - -
New
RS Stock No. 211-3658
Mfr. Part No.3RB3016-1TB0
BrandSiemens
HK$821.24
Each
units
4 → 16 A - 16 A 3P 3RB - - - - 1NC/1NO - - - -
RS Stock No. 203-2151
Mfr. Part No.3RH2140-2SB40
BrandSiemens
HK$511.84
Each
units
- 24 V dc 10 A 4P SIRIUS - - - - 4NO - - - -
RS Stock No. 203-2172
Mfr. Part No.3RH2131-1AD00
BrandSiemens
HK$446.91
Each
units
- 42 V ac 10 A 4P SIRIUS - - - - 3NO/1NC - - - -