Contactors

In simple terms, a contactor, contactor switch or contactor relay is a device designed for switching an electrical circuit on or off. They are part of the relay family, but the main difference is that a contactor is used in applications with higher current capacity is involved. Contactors are typically used for motors, lighting circuits, heating, and other electrical loads. A contactor can function on its own or as a power control device or as part of a motor starter.

RS Components offer a comprehensive range of high-quality electrical contactors from industry-leading brands including Schneider Electric, Siemens, Eaton, ABB, and Allen Bradley. We also stock a selection of accessories used to enhance the function of the contactor including, Contactor Overload Relays, auxiliary contacts, mechanical interlocks, and much more.

What are electrical 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 contactor's 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.

How do contactors work?

Contactors, unlike standard relays, are specifically designed to connect to high current load devices. Used in larger-scale control circuit 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 can switch more than 10 amperes, it is called a contactor. These devices also feature high coil voltages which are rare within relays.

Contactor Specifications

There are various types of contactors, and each type will have its own set of specifications depending on your application. Some key specifications are

  • AC Contactor or DC Contactor with coils including 12 V, 24 V, 48 V, 110 V, 240 V, 400 V, and 440 V.
  • Reversing or non-reversing functionality.
  • AC3 and AC1 categories
  • Contactors with 2 poles, 3 poles 4 poles, and even 8 and 10 pole variants.
  • Various contact configurations.
  • IEC standards

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Description Price Coil Voltage Contact Current Rating Number of Poles Power Rating Series Normal State Configuration Pole and Throw Configuration Contact Voltage Rating Function Number Of Auxiliary Contacts Range Auxiliary Contact Configuration Mounting Style Length
RS庫存編號 243-9832
製造零件編號GC2530M5
TWD1,619.00
單位
230 V ac 25 A 3 - GC25 3NO - 415 V ac - 1 Tesys GC - - 81mm
RS庫存編號 493-0078
製造零件編號276705 & DILM9-10(24VDC)
BrandEaton
TWD1,407.00
單位
24 V dc 9 A 3 4 kW DILM 3NO - 400 V ac - 1 XStart - - 68mm
RS庫存編號 305-1405
製造零件編號GC2510M5
TWD1,817.00
單位
230 V ac 25 A 1 - GC25 1NO - 500 V ac - 1 Tesys GC - - 81mm
RS庫存編號 744-7992
製造零件編號LP1K12004BD
TWD1,255.00
單位
24 V dc 20 A 4 - LP1K 4NO - 690 V ac - - TeSys K - - 58mm
RS庫存編號 608-9352
製造零件編號LC1D09M7
TWD1,948.00
單位
230 V ac 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS庫存編號 394-9807
製造零件編號LC1D09BD
TWD3,969.00
單位
24 V dc 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS庫存編號 706-1235
製造零件編號3RT2018-1BB41
BrandSiemens
TWD2,870.00
單位
24 V dc 16 A 3 7.5 kW 3RT2 3NO - 400 V ac - 1 SIRIUS Innovation - - 57.5mm
RS庫存編號 744-7734
製造零件編號LC1SK0600B7
TWD1,192.00
單位
24 V ac 6 A 2 - LC1S 2NO - 690 V ac - 1 TeSys SK 1NO - 56mm
RS庫存編號 744-7015
製造零件編號LC1D098FD
TWD3,605.00
單位
110 V dc 9 A 4 - LC1D 2NO/2NC - 690 V ac/dc - 2 TeSys D 1NO + 1NC - 85mm
RS庫存編號 845-1633
製造零件編號LC1D186R7
TWD2,497.00
單位
440 V ac 32 A 3 7.5 kW LC1D 3NO - 300 V dc, 690 V ac - - TeSys D - - 77mm
RS庫存編號 400-1899
製造零件編號LC1D09BL
TWD1,464.00
單位
24 V dc 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS庫存編號 751-5584
製造零件編號3RT1066-6LA06
BrandSiemens
TWD57,597.00
單位
400 V ac 265 A 3 160 kW 3RT1 3NO - 400 V - 4 SIRIUS Classic - - 145mm
RS庫存編號 744-7478
製造零件編號LC1D40AM7
TWD5,380.00
單位
230 V ac 40 A 3 - LC1D 3NO - 690 V ac/dc - 2 TeSys D 1NO + 1NC - 122mm
RS庫存編號 706-1131
製造零件編號3RT2016-1BB42
BrandSiemens
TWD1,594.00
單位
24 V dc 9 A 3 4 kW (AC3) 3RT2 3NO - 400 V ac - 1 SIRIUS Innovation - - 57.5mm
RS庫存編號 764-8905
製造零件編號1SBL297201R1400 AF38-40-00-14
BrandABB
TWD5,565.00
單位
230 V ac/dc 55 A 4 18.5 kW AF38 4NO - 690 V ac - - AF Range - - 86mm
RS庫存編號 759-077
製造零件編號LP4K0910BW3
TWD1,552.00
單位
24 V dc 9 A 3 4 kW LP4K 3NO - 600 V ac Motor Control 1 TeSys K 1NO - 57.91mm
RS庫存編號 844-8233
製造零件編號LC1D65AM7
TWD9,312.00
單位
220 V ac - 3 - LC1D 3NO - - - - TeSys D - - 122mm
RS庫存編號 744-7746
製造零件編號LC1SK0600U7
TWD940.00
單位
230 V ac 6 A 2 - LC1S 2NO - 690 V ac - 1 TeSys SK 1NO - 56mm
RS庫存編號 837-6936
製造零件編號1SBL397201R1300 AF80-40-00-13
BrandABB
TWD16,517.00
單位
230 V ac 125 A 4 37 kW AF40 4NO - 690 V ac - - AF Range - - 150mm
RS庫存編號 706-1386
製造零件編號3RT2027-1BB40
BrandSiemens
TWD5,716.00
單位
24 V dc 32 A 3 15 kW 3RT2 3NO - 400 V ac - 2 SIRIUS Innovation - - 85mm