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 1 - 20 of 558 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 Priced to Clear Series External Dimensions
RS Stock No. 331-3696
BrandRS PRO
£5.05
Each
Units
2 NO/NC - DIN Rail Mount - 240 V ac DP - - - - - - -
RS Stock No. 121-6867
BrandRS PRO
£4.06
Each
Units
1 NO - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - HRS -
RS Stock No. 121-6869
BrandRS PRO
£9.66
Each
Units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - UR -
RS Stock No. 121-6865
BrandRS PRO
£3.51
Each
Units
1 NO - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - HSV -
RS Stock No. 121-6866
BrandRS PRO
£3.54
Each
Units
1 NC - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - HSV -
RS Stock No. 121-6868
BrandRS PRO
£4.06
Each
Units
1 NC - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - HRS -
RS Stock No. 121-6871
BrandRS PRO
£9.66
Each
Units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - AR -
RS Stock No. 121-6870
BrandRS PRO
£9.76
Each
Units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - UR -
RS Stock No. 466-295
BrandRS PRO
£3.18
Each
Units
1 NO/NC - Panel Mount 63 A - SPDT - - - - - - -
RS Stock No. 121-6873
BrandRS PRO
£2.19
Each
Units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - MSK -
RS Stock No. 121-6872
BrandRS PRO
£12.26
Each
Units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 → +60 °C - AR -
RS Stock No. 121-6874
BrandRS PRO
£1.18
Each
Units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - MSK -
RS Stock No. 121-6875
BrandRS PRO
£2.72
Each
Units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C - MSK -
RS Stock No. 394-9908
Mfr. Part No.LADN22
£16.63
Each
Units
4 2NO/2NC TeSys Front Mount 10 A 600 V ac 4P Screw -5°C +60°C - - LADN -
RS Stock No. 395-0144
Mfr. Part No.GVAE11
£8.54
Each
Units
2 NO/NC TeSys Front Mount 2.5 A 60 V dc, 240 V ac DP Screw - - - - GVAE -
RS Stock No. 791-2824
Mfr. Part No.A9A26924
£30.39
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. 394-9936
Mfr. Part No.LADN11
£9.40
Each
Units
2 NO/NC TeSys Front Mount 10 A - DP Screw - - - - LADN -
RS Stock No. 257-3752
Mfr. Part No.VZ7
£14.41
Each
Units
2 NO/NC - - - - DP - - - - - VZ7 -
RS Stock No. 759-055
Mfr. Part No.LA1KN22
£12.20
Each
Units
4 2NO/2NC TeSys Clip On 10 A 600 V ac 4P Screw - - -25 → 50 °C - LA1K -
RS Stock No. 395-0122
Mfr. Part No.GVAN11
£8.72
Each
Units
2 NO/NC TeSys Side Mount 6 A 240 V dc, 690 V ac DP Screw - - - - GVAN -
Related Products
The SN201-IH auxiliary contact allows the indication of ...
Description:
The SN201-IH auxiliary contact allows the indication of the device contact positions. It can be used as an interface module between MCB of the SN201 series and other compact auxiliary elements.
10A rated (AC1)Blocks per contactor 2 side + ...
Description:
10A rated (AC1)Blocks per contactor 2 side + 1 top (max. 8 contacts)Min. switching 17V 5mA (DIN 19240).
May be used where there is a need ...
Description:
May be used where there is a need to control additional circuits or to indicate status or operation For use with ESB type installation contactors.
On / Off Switch for DIN rail assembly ...
Description:
On / Off Switch for DIN rail assembly Types with 32A to 63A applicable as load disconnecting switches after EN 60947-1With separate handle locking device Sealable witch position Auxiliary current switch can be mounted Position indicator red / green on 5TE83, 4, & 5 units Auxilary switches available for all ...