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 Stock No. 608-9352
Mfr. Part No.LC1D09M7
SGD82.79
Each
units
230 V ac 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 394-9807
Mfr. Part No.LC1D09BD
SGD159.58
Each
units
24 V dc 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 394-9790
Mfr. Part No.LC1D09P7
SGD66.17
Each
units
230 V ac 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 744-8002
Mfr. Part No.LP1SK0600BD
SGD49.77
Each
units
24 V dc 12 A 2 - LP1S 2NO - 690 V ac - 1 TeSys SK 1NO - 56mm
RS Stock No. 800-7270
Mfr. Part No.1SFL587002R1311 AF305-30-11-13
BrandABB
SGD1,959.37
Each
units
230 V ac 400 A 3 160 kW AF305 3NO - 690 V ac - 2 AF Range - - 140mm
RS Stock No. 493-0040
Mfr. Part No.276690 & DILM9-10(230V50HZ,240V60HZ)
BrandEaton
SGD61.50
Each
units
230 V ac 9 A 3 4 kW DILM 3NO - 400 V ac - 1 xStart - - 68mm
RS Stock No. 609-0009
Mfr. Part No.LC1F185M7
SGD1,335.49
Each
units
230 V ac 180 A 3 100 kW LC1F 3NO - 1 kV ac - - TeSys F - - 174mm
RS Stock No. 454-7799
Mfr. Part No.LC1DT25B7
SGD78.24
Each
units
24 V ac 25 A 4 - LC1D 4NO - 690 V ac - 2 TeSys D - - 85mm
RS Stock No. 187-302
Mfr. Part No.LC1D25U7
SGD102.87
Each
units
230 V ac 25 A 3 11 kW LC1D 3NO - 690 V ac Motor Control 2 TeSys D 3NO - 85mm
RS Stock No. 706-1333
Mfr. Part No.3RT2025-1BB40
BrandSiemens
SGD213.51
Each
units
24 V dc 16 A 3 7.5 kW 3RT2 3NO - 400 V ac - 2 SIRIUS Innovation - - 85mm
RS Stock No. 744-7172
Mfr. Part No.LC1D128M7
SGD79.16
Each
units
230 V ac 25 A 4 - LC1D 2NO/2NC - 690 V ac/dc - 2 TeSys D 1NO + 1NC - 85mm
RS Stock No. 279-5637
Mfr. Part No.LP1K0610BD
SGD56.01
Each
units
24 V dc 6 A 3 2.2 kW LP1K 3NO - 690 V ac - 1 TeSys K - - 58mm
RS Stock No. 815-3556
Mfr. Part No.8910DPA43V02
SGD165.89
Each
units
110 V ac 40 A 3 - DPA 3NO - 600 V ac - - - - - 58.7mm
RS Stock No. 305-2111
Mfr. Part No.LP4K1210BW3
SGD83.87
Each
units
24 V dc 12 A 3 5.5 kW LP4K 3NO - 690 V ac - 1 TeSys K - - 58mm
RS Stock No. 394-9728
Mfr. Part No.LC1D18BD
SGD182.73
Each
units
24 V dc 18 A 3 7.5 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 609-9804
Mfr. Part No.LC1D80BD
SGD744.61
Each
units
24 V dc 80 A 3 45 kW LC1D 3NO - 1 kV ac - 2 TeSys D - - 127mm
RS Stock No. 609-0683
Mfr. Part No.LC2K0601P7
SGD130.10
Each
units
230 V ac 6 A 3 4 kW LC2K 3NO - 690 V ac Reversing 1 TeSys K 1NC - 58mm
RS Stock No. 764-8918
Mfr. Part No.1SBL296201R2100 AF38Z-40-00-21
BrandABB
SGD262.12
Each
units
24 V ac/dc 55 A 4 18.5 kW AF38Z 4NO - 690 V ac - 0 AF Range - - 86mm
RS Stock No. 656-7111
Mfr. Part No.LC1D18U7
SGD112.07
Each
units
230 V ac 18 A 3 7.5 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 243-6552
Mfr. Part No.3RT1015-1BB41
BrandSiemens
SGD69.31
Each
units
24 V dc 7 A 3 3 kW (AC3) 3RT1 3NO - 400 V ac - 1 SIRIUS Classic - - 57.5mm