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.


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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. 610-3127
Mfr. Part No.GVAE113
MYR132.04
Each
units
2 NO/NC - Front Mount - 60 V dc, 240 V ac DP - - - - GVAE - -
RS Stock No. 488-6448
Mfr. Part No.S2C-S/H6R
BrandABB
MYR158.28
Each
units
2 NO/NC - Side Mount 1.5 A dc, 6 A ac 110 V dc, 240 V ac DP Screw - - - S2C - -
RS Stock No. 413-1669
Mfr. Part No.GVAE113
MYR62.24
Each
units
2 1NO/1NC - Front Mount - 60 V dc, 240 V ac DP - - - - GVAE - -
RS Stock No. 209-5820
Mfr. Part No.M5725207
BrandMETCASE
MYR369.86
Each
units
- - - - - - - - - - - Mettec 250 mm 250 x 250 x 120mm
RS Stock No. 874-4534
Mfr. Part No.3VA9988-0AA11
BrandSiemens
MYR209.44
Each
units
6 4NO/2NC Sentron Side Mount 10 A - - Screw - - - 3VA - -
RS Stock No. 513-0229
Mfr. Part No.277950 & DILM150-XHI22
BrandEaton
MYR72.88
Each
units
4 2NO/2NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac 4PST Screw - - - DILM - -
RS Stock No. 706-0999
Mfr. Part No.3RH2911-2HA31
BrandSiemens
MYR59.37
Each
units
4 3NO/NC Sirius Innovation Snap-On 6 A ac, 10 A dc 250 V dc, 690 V ac 4PST Cage Clamp -25°C +60°C -25 → +60 °C - - -
RS Stock No. 608-9138
Mfr. Part No.LADC22
MYR103.88
Each
units
4 2NO/2NC - Front Mount - - 4P Screw - - - LADC - -
RS Stock No. 272-870
Mfr. Part No.GVAED011
MYR61.53
Each
units
2 NO/NC - Front Mount - - DP - - - - GVAE - -
RS Stock No. 493-0674
Mfr. Part No.276427 & DILA-XHI31
BrandEaton
MYR61.26
Each
units
4 3NO/NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac 4PST Screw - - - DILA - -
RS Stock No. 400-1467
Mfr. Part No.LAD8N11
MYR77.66
Each
units
- - - - - - - - - - - LAD8 - -
RS Stock No. 392-8973
Mfr. Part No.3RH1921-1CA01
BrandSiemens
MYR28.45
Each
units
1 NC Sirius Classic Snap-On - - SP Screw - - - 3RH1 - -
RS Stock No. 847-3689
Mfr. Part No.113895 & Z-IHK-NA
BrandEaton
MYR173.99
Each
units
2 1NO/1NC - DIN Rail Mount 6 A 250 V ac - Screw -5°C +40°C -5 → +40 °C FAZ - -
RS Stock No. 746-0783
Mfr. Part No.3RH2911-1GA04
BrandSiemens
MYR89.92
Each
units
4 4NC Sirius Innovation Snap Front 10 A 600 V dc, 690 V ac 4P Screw - - -25 → +60 °C 3RH2 - -
RS Stock No. 272-864
Mfr. Part No.GVAED101
MYR76.04
Each
units
2 2NO - Front Mount - - DP - - - - GVAE - -
RS Stock No. 513-0184
Mfr. Part No.277946 & DILM150-XHI11
BrandEaton
MYR46.01
Each
units
2 NO/NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac DPST Screw -25°C +60°C -25 → +60 °C DILM - -
RS Stock No. 187-908
Mfr. Part No.LADN11G
MYR49.26
Each
units
2 NO/NC - Front Mount 10 A 690 V ac DP Screw -5°C +60°C -5 → +60 °C LADN - -
RS Stock No. 392-8967
Mfr. Part No.3RH1921-1CA10
BrandSiemens
MYR24.34
Each
units
1 NO Sirius Classic Snap-On - - SP Screw - - - 3RH1 - -
RS Stock No. 488-7384
Mfr. Part No.2CDS200912R0001
BrandABB
MYR133.01
Each
units
2 NO/NC - Side Mount - - DP Screw - - - - - -
RS Stock No. 608-7902
Mfr. Part No.GS1AP34
MYR169.45
Each
units
- - - - - - - - - - - GS1A - -