Contactors

A contactor is a relay designed to switch a large amount of electrical power through its contacts and is commonly used in the control of electric motors and lighting systems. A contactor can function on its own as a power control device, or as part of a starter. At RS Components, we have a wide range of 4 Pole electrical contactors with products from leading brands within the industry, such as Aleen Bradley, Eaton, Lovato, Schneider Electric, WEG and many more.

What are electric contactors?

Designed to be connected to high-current load devices, contactors incorporate spring loaded contacts that make or break power supply lines to a load. These contacts are designed to open and close very rapidly to assist with arc suppression, ensuring the contactors ability to interrupt heavy motor currents with minimal damage over a longer life cycle.In any device that is frequently turned off and on, a contactor is often employed, and different contactor configurations are designed for different current requirements. From uses in basic light switches to complex applications such as controlling electromagnets, contactors are highly versatile.

The RS Range of contactors are available in a variety of pole and throw combinations, to suit your application. A range of contactor accessories can be used to enhance the function of the contactor.

How contactors do work?

Contactors, unlike relays, are specifically designed to connect to high current load devices. Used in larger-scale applications, a contactor is a switch that can be controlled remotely, specifically designed to switch a large amount of electrical power through its contacts. If a device has the ability to switch more than 15 amperes, it is called a contactor. These devices also feature high coil voltages which is rare within relays.


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Description Price Coil Voltage Contact Current Rating Number of Poles Power Rating Series Pole and Throw Configuration Range Normal State Configuration Function Number Of Auxiliary Contacts Auxiliary Contact Configuration Contact Voltage Rating Mounting Style Length
RS Stock No. 706-1377
Mfr. Part No.3RT2026-2BB40
BrandSiemens
HK$877.61
Each
units
24 V dc 25 A 3 11 kW 3RT2 - SIRIUS Innovation 3NO - 2 - 400 V ac - 102mm
RS Stock No. 706-1122
Mfr. Part No.3RT2016-1BB41
BrandSiemens
HK$350.94
Each
units
24 V dc 9 A 3 4 kW (AC3) 3RT2 - SIRIUS Innovation 3NO - 1 - 400 V ac - 57.5mm
RS Stock No. 246-4377
Mfr. Part No.3RT1036-1AP00
BrandSiemens
HK$1,464.89
Each
units
230 V ac 50 A 3 22 kW 3RT1 - SIRIUS Classic 3NO - - - 400 V ac - 112mm
RS Stock No. 706-1352
Mfr. Part No.3RT2026-1BB40
BrandSiemens
HK$886.29
Each
units
24 V dc 25 A 3 11 kW (AC3) 3RT2 - SIRIUS Innovation 3NO - 2 - 400 V ac - 85mm
RS Stock No. 706-1150
Mfr. Part No.3RT2016-2BB42
BrandSiemens
HK$337.05
Each
units
24 V dc 9 A 3 4 kW 3RT2 - SIRIUS Innovation 3NO - 1 - 400 V ac - 70mm
RS Stock No. 751-5625
Mfr. Part No.3RT1446-1AP00
BrandSiemens
HK$4,393.86
Each
units
230 V ac 44 A 3 22 kW 3RT1 - SIRIUS Classic 3NO - - - 400 V - 70mm
RS Stock No. 861-3023
Mfr. Part No.3RT1054-6AP36
BrandSiemens
HK$5,554.10
Each
units
230 V ac 115 A 3 55 kW 3RT1 - SIRIUS Classic 3NO - 4 2NO/2NC 400 V - 120mm
RS Stock No. 706-1106
Mfr. Part No.3RT2015-2BB42
BrandSiemens
HK$422.40
Each
units
24 V dc 7 A 3 3 kW 3RT2 - SIRIUS Innovation 3NO - 1 - 400 V ac - 70mm
RS Stock No. 706-1239
Mfr. Part No.3RT2018-1BB42
BrandSiemens
HK$984.75
Each
units
24 V dc 16 A 3 7.5 kW 3RT2 - SIRIUS Innovation 3NO - 1 - 400 V ac - 57.5mm
RS Stock No. 766-1918
Mfr. Part No.3TK2851-1AL20
BrandSiemens
HK$2,726.27
Each
units
230 V ac 10 A - - 3TK28 - SIRIUS 2NO/NC Safety - - 600 V ac - 132mm
RS Stock No. 861-3411
Mfr. Part No.3RT2325-1BB40
BrandSiemens
HK$1,364.35
Each
units
24 V dc 15.5 A 4 7.5 kW 3RT2 - SIRIUS Innovation 4NO - 2 1NO/1NC 400 V - 60mm
RS Stock No. 861-3011
Mfr. Part No.3RT1054-6AF36
BrandSiemens
HK$5,554.10
Each
units
110 V ac 115 A 3 55 kW 3RT1 - SIRIUS Classic 3NO - 4 2NO/2NC 400 V - 120mm
RS Stock No. 706-1370
Mfr. Part No.3RT2027-1AB00
BrandSiemens
HK$912.76
Each
units
24 V ac 32 A 3 15 kW 3RT2 - SIRIUS Innovation 3NO - 2 - 400 V ac - 85mm
RS Stock No. 706-1314
Mfr. Part No.3RT2024-2AP00
BrandSiemens
HK$357.36
Each
units
230 V ac 12 A 3 5.5 kW 3RT2 - SIRIUS Innovation 3NO - 2 - 400 V ac - 102mm
RS Stock No. 706-1403
Mfr. Part No.3RT2028-1AP00
BrandSiemens
HK$1,170.96
Each
units
230 V ac 38 A 3 18.5 kW 3RT2 - SIRIUS Innovation 3NO - 2 - 400 V ac - 85mm
RS Stock No. 751-5543
Mfr. Part No.3RT1045-1AV00
BrandSiemens
HK$4,103.80
Each
units
400 V ac 80 A 3 37 kW 3RT1 - SIRIUS Classic 3NO - - - 400 V - 70mm
RS Stock No. 751-8707
Mfr. Part No.3TF6844-0CM7
BrandSiemens
HK$49,954.68
Each
units
230 V ac 630 A 3 - 3TF6 - SIRIUS Innovation 3NO - 8 - 400 V - 230mm
RS Stock No. 706-1077
Mfr. Part No.3RT2015-1BB41
BrandSiemens
HK$329.02
Each
units
24 V dc 7 A 3 3 kW (AC3) 3RT2 - SIRIUS Innovation 3NO - 1 - 400 V ac - 57.5mm
RS Stock No. 861-3140
Mfr. Part No.3RT2016-1BB44-3MA0
BrandSiemens
HK$684.33
Each
units
24 V dc 9 A 3 4 kW 3RT2 - SIRIUS Innovation 3NO - 4 2NO/2NC 400 V - 45mm
RS Stock No. 706-1169
Mfr. Part No.3RT2017-1AB01
BrandSiemens
HK$462.01
Each
units
24 V ac 12 A 3 5.5 kW 3RT2 - SIRIUS Innovation 3NO - 1 - 400 V ac - 57.5mm