Auxiliary Contacts

Contacts are the conductive pieces of material that form part of an electrically controlled switch. Auxiliary contacts form part of a contactor, which is a type of switch that can be controlled remotely.

Contactors are often used in very high-power circuits, and auxiliary contacts are the last phase of contact, used to reduce the power of the current. They have a lower current rating than regular power contacts, and can be used to de-energise the contactor.

How do auxiliary contacts work?

Auxiliary contacts are affixed to the main contacts and change state when the main contacts do. They pass the data from the circuit to a logic controller, which in turn gives instructions to the linked devices about whether to turn on or off.

Alternatively, they can be used as a standalone hardware control unit.

What are auxiliary contacts used for?

One common usage of auxiliary contacts is in push button controllers, where they can be built in to the start button.


...
Read more Read less

Filters

Viewing 21 - 40 of 497 products
Results per page
Description Price Number of Contacts Normal State Configuration Range Mounting Style Contact Current Rating Contact Voltage Rating Pole and Throw Configuration Terminal Type Minimum Operating Temperature Maximum Operating Temperature Operating Temperature Range Series External Width External Dimensions
RS Stock No. 759-011
Mfr. Part No.LA1KN20
TWD273.00
Each
units
2 2NO - Clip On 10 A 600 V ac DP Screw - - - LA1K - -
RS Stock No. 776-2963
Mfr. Part No.A9N26929
TWD3,153.00
Each
units
2 CO Acti 9 DIN Rail Mount 6 A ac, 6 A dc 130 V dc, 415 V ac DPDT Clamp -37°C +70°C -37 → +70 °C iC60 - -
RS Stock No. 706-0905
Mfr. Part No.3RH2911-1HA11
BrandSiemens
TWD276.00
Each
units
2 NO/NC Sirius Innovation Snap-On 6 A dc, 10 A ac 250 V dc, 690 V ac DPST Screw -25°C +60°C -25 → +60 °C 3RH2 - -
RS Stock No. 395-0122
Mfr. Part No.GVAN11
TWD327.00
Each
units
2 NO/NC TeSys Side Mount 6 A 240 V dc, 690 V ac DP Screw - - - GVAN - -
RS Stock No. 121-6867
BrandRS PRO
TWD183.00
Each
units
1 1NO - DIN Rail Mount - - - Screw -25°C +60°C -25 → +60 °C HRS - -
RS Stock No. 488-7384
Mfr. Part No.2CDS200912R0001 S2C-H6R
BrandABB
TWD873.00
Each
units
2 NO/NC - Side Mount - - DP Screw - - - - - -
RS Stock No. 395-0352
Mfr. Part No.GV2AF3
TWD111.00
Each
units
- - - - - - - - - - - GV2A - -
RS Stock No. 394-9936
Mfr. Part No.LADN11
TWD356.00
Each
units
2 NO/NC TeSys Front Mount 10 A - DP Screw - - -5 → +60 °C LADN - -
RS Stock No. 791-2824
Mfr. Part No.A9A26924
TWD1,397.00
Each
units
1 NO/NC Acti 9 DIN Rail Mount 2 A dc, 6 A ac 24 → 130 V dc, 240 → 415 V ac SPCO Screw -35°C +70°C -35 → +70 °C iOF - -
RS Stock No. 122-1054
Mfr. Part No.BFB-11 EN
BrandWEG
TWD329.00
Each
units
2 1NO/1NC - Front Mount 10 A 690 V ac DPST Screw - - -25 → +55 °C BFB - -
RS Stock No. 395-0144
Mfr. Part No.GVAE11
TWD320.00
Each
units
2 NO/NC TeSys Front Mount 2.5 A 60 V dc, 240 V ac DP Screw - - - GVAE - -
RS Stock No. 392-8951
Mfr. Part No.3RH1921-2CA10
BrandSiemens
TWD209.00
Each
units
1 NO Sirius Classic Snap-On - - SP Cage Clamp - - - 3RH1 - -
RS Stock No. 714-1773
Mfr. Part No.SAUX2EB
TWD510.00
Each
units
2 - - Side Mount - - DP Screw - - - - - -
RS Stock No. 189-3881
Mfr. Part No.010304 & 40DILE
BrandEaton
TWD610.00
Each
units
4 4NO - Front Mount 2.5 A dc, 4 A ac 220 V dc, 500 V ac 4PST Screw - - - - - -
RS Stock No. 711-6385
Mfr. Part No.1SBN010140R1240 CA4-40N
BrandABB
TWD702.00
Each
units
4 4NO - Front Mount 6 A 600 V dc, 690 V ac 4P Screw -40°C +70°C -40 → +70 °C CA4 - -
New
RS Stock No. 211-2290
Mfr. Part No.GS1ANT22
TWD286.00
Each
units
4 2NC/2NO TeSys DIN 10 A 230 V - - - - - GS1AN - -
RS Stock No. 121-6872
BrandRS PRO
TWD552.00
Each
units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 → +60 °C AR - -
RS Stock No. 435-421
Mfr. Part No.2CCS800900R0021 S800-AUX/ALT
BrandABB
TWD1,677.00
Each
units
2 2NO/2NC - DIN Rail Mount 4 A dc, 6 A ac 250 V dc, 400 V ac DPDT Screw -25°C +60°C -25 → +60 °C S800 - -
New
RS Stock No. 216-4807
Mfr. Part No.5ST3012-2
BrandSiemens
TWD931.00
Each
units
2 2NC SENTRON DIN - - - - - - - 5ST3 - -
RS Stock No. 203-2098
Mfr. Part No.3RH2911-1LA11
BrandSiemens
TWD421.00
Each
units
2 1NO/1NC SIRIUS Snap-On 10 A 17 V dc - - - - - 3RH2911 - -