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. 394-9807
Mfr. Part No.LC1D09BD
$245.83
Each
units
24 V dc 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 656-7111
Mfr. Part No.LC1D18U7
$154.93
Each
units
230 V ac 18 A 3 7.5 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 187-920
Mfr. Part No.LC1D09U7
$203.06
Each
units
240 V ac 9 A 3 4 kW LC1D 3NO - 690 V ac Motor Control 2 TeSys D - - 77mm
RS Stock No. 744-8002
Mfr. Part No.LP1SK0600BD
$159.41
Each
units
24 V dc 12 A 2 - LP1S 2NO - 690 V ac - 1 TeSys SK 1NO - 56mm
RS Stock No. 400-1899
Mfr. Part No.LC1D09BL
$224.35
Each
units
24 V dc 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 187-302
Mfr. Part No.LC1D25U7
$355.49
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. 776-1550
Mfr. Part No.22.32.0.012.4520
BrandFinder
$58.95
Each
units
12 V dc 25 A 2 2 VA 22 Series NO/NC - 250 V ac, 440 V ac - - - - - 84mm
RS Stock No. 394-9813
Mfr. Part No.LC1D09B7
$161.54
Each
units
24 V ac 9 A 3 4 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 187-661
Mfr. Part No.LC1D32U7
$444.95
Each
units
230 V ac 32 A 3 15 kW LC1D 3NO - 690 V ac - 2 TeSys D 1NO + 1NC - 85mm
RS Stock No. 467-9341
Mfr. Part No.010343 & DILEM-01-G(24VDC)
BrandEaton
$98.12
Each
units
24 V dc 9 A 4 4 kW DILEM 3NO - 220 V dc, 500 V ac - 1 xStart - - 58mm
RS Stock No. 445-0910
Mfr. Part No.1SBL141001R8810
BrandABB
$135.65
Each
units
230 V ac 25 A 3 4 kW A9 3NO - 690 V ac - 1 A Line - - 74mm
RS Stock No. 711-6206
Mfr. Part No.1SBL137201R1300 AF09-40-00-13
BrandABB
$74.21
Each
units
230 V ac 25 A 4 4 kW AF09 4NO - 690 V ac - - AF Range - - 80mm
RS Stock No. 706-1181
Mfr. Part No.3RT2017-1BB41
BrandSiemens
$195.21
Each
units
24 V dc 12 A 3 5.5 kW 3RT2 3NO - 400 V ac - 1 SIRIUS Innovation - - 57.5mm
RS Stock No. 187-324
Mfr. Part No.LC1D12U7
$181.29
Each
units
230 V ac 12 A 3 5.5 kW LC1D 3NO - 690 V ac - 2 TeSys D - - 77mm
RS Stock No. 513-0112
Mfr. Part No.277902 & DILM65(230V50/60HZ)
BrandEaton
$590.99
Each
units
230 V ac 65 A 3 30 kW DILM 3NO - 400 V ac - 0 xStart - - 115mm
RS Stock No. 844-8233
Mfr. Part No.LC1D65AM7
$375.99
Each
units
220 V ac - 3 - LC1D 3NO - - - - TeSys D - - 122mm
RS Stock No. 609-4180
Mfr. Part No.LP1K09004BD
$64.11
Each
units
24 V dc 20 A 4 - LP1K 4NO - 440 V ac - - TeSys K - - 57.91mm
RS Stock No. 764-9028
Mfr. Part No.1SBL137501R1100 AF09-22-00-11
BrandABB
$71.34
Each
units
24 V ac/dc 25 A 4 4 kW AF09 2NO/2NC - 690 V ac - 0 AF Range - - 86mm
RS Stock No. 445-7753
Mfr. Part No.1SBL181001R8010 - A16-30-10 220V
BrandABB
$216.99
Each
units
230 V ac 30 A 3 7.5 kW A16 3NO - 690 V ac - 1 A Line - - 74mm
RS Stock No. 323-016
Mfr. Part No.010005 & DILEM-10(24V50HZ)
BrandEaton
$77.62
Each
units
24 V ac 9 A 3 4 kW DILEM 3NO - 400 V ac - 1 xStart - - 58mm