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 Normal State Configuration Pole and Throw Configuration Range Contact Voltage Rating Function Number Of Auxiliary Contacts Auxiliary Contact Configuration Mounting Style Length
RS庫存編號 706-1377
製造零件編號3RT2026-2BB40
BrandSiemens
HK$877.61
單位
24 V dc 25 A 3 11 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 2 - - 102mm
RS庫存編號 706-1122
製造零件編號3RT2016-1BB41
BrandSiemens
HK$350.94
單位
24 V dc 9 A 3 4 kW (AC3) 3RT2 3NO - SIRIUS Innovation 400 V ac - 1 - - 57.5mm
RS庫存編號 706-1352
製造零件編號3RT2026-1BB40
BrandSiemens
HK$886.29
單位
24 V dc 25 A 3 11 kW (AC3) 3RT2 3NO - SIRIUS Innovation 400 V ac - 2 - - 85mm
RS庫存編號 246-4377
製造零件編號3RT1036-1AP00
BrandSiemens
HK$2,374.19
單位
230 V ac 50 A 3 22 kW 3RT1 3NO - SIRIUS Classic 400 V ac - - - - 112mm
RS庫存編號 706-1150
製造零件編號3RT2016-2BB42
BrandSiemens
HK$337.05
單位
24 V dc 9 A 3 4 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 1 - - 70mm
RS庫存編號 751-5625
製造零件編號3RT1446-1AP00
BrandSiemens
HK$4,393.86
單位
230 V ac 44 A 3 22 kW 3RT1 3NO - SIRIUS Classic 400 V - - - - 70mm
RS庫存編號 706-1106
製造零件編號3RT2015-2BB42
BrandSiemens
HK$422.40
單位
24 V dc 7 A 3 3 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 1 - - 70mm
RS庫存編號 861-3023
製造零件編號3RT1054-6AP36
BrandSiemens
HK$5,554.10
單位
230 V ac 115 A 3 55 kW 3RT1 3NO - SIRIUS Classic 400 V - 4 2NO/2NC - 120mm
RS庫存編號 706-1239
製造零件編號3RT2018-1BB42
BrandSiemens
HK$984.75
單位
24 V dc 16 A 3 7.5 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 1 - - 57.5mm
RS庫存編號 861-3411
製造零件編號3RT2325-1BB40
BrandSiemens
HK$1,364.35
單位
24 V dc 15.5 A 4 7.5 kW 3RT2 4NO - SIRIUS Innovation 400 V - 2 1NO/1NC - 60mm
RS庫存編號 706-1260
製造零件編號3RT2018-2BB41
BrandSiemens
HK$942.71
單位
24 V dc 16 A 3 7.5 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 1 - - 70mm
RS庫存編號 751-8707
製造零件編號3TF6844-0CM7
BrandSiemens
HK$49,954.68
單位
230 V ac 630 A 3 - 3TF6 3NO - SIRIUS Innovation 400 V - 8 - - 230mm
RS庫存編號 706-1235
製造零件編號3RT2018-1BB41
BrandSiemens
HK$793.59
單位
24 V dc 16 A 3 7.5 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 1 - - 57.5mm
RS庫存編號 706-1403
製造零件編號3RT2028-1AP00
BrandSiemens
HK$1,170.96
單位
230 V ac 38 A 3 18.5 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 2 - - 85mm
RS庫存編號 751-5543
製造零件編號3RT1045-1AV00
BrandSiemens
HK$4,103.80
單位
400 V ac 80 A 3 37 kW 3RT1 3NO - SIRIUS Classic 400 V - - - - 70mm
RS庫存編號 766-1918
製造零件編號3TK2851-1AL20
BrandSiemens
HK$2,726.27
單位
230 V ac 10 A - - 3TK28 2NO/NC - SIRIUS 600 V ac Safety - - - 132mm
RS庫存編號 861-3011
製造零件編號3RT1054-6AF36
BrandSiemens
HK$5,554.10
單位
110 V ac 115 A 3 55 kW 3RT1 3NO - SIRIUS Classic 400 V - 4 2NO/2NC - 120mm
RS庫存編號 706-1314
製造零件編號3RT2024-2AP00
BrandSiemens
HK$503.84
單位
230 V ac 12 A 3 5.5 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 2 - - 102mm
RS庫存編號 706-1370
製造零件編號3RT2027-1AB00
BrandSiemens
HK$1,289.15
單位
24 V ac 32 A 3 15 kW 3RT2 3NO - SIRIUS Innovation 400 V ac - 2 - - 85mm
RS庫存編號 861-3140
製造零件編號3RT2016-1BB44-3MA0
BrandSiemens
HK$684.33
單位
24 V dc 9 A 3 4 kW 3RT2 3NO - SIRIUS Innovation 400 V - 4 2NO/2NC - 45mm