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 CAD Drawing Series External Dimensions
RS Stock No. 209-5814
Mfr. Part No.M5723217
BrandMETCASE
kr 987,75
Each
Units
- - - - - - - - - - - - Mettec 230 x 193 x 120mm
RS Stock No. 244-0107
Mfr. Part No.NHI-E-11-PKZ0
BrandEaton
kr 72,38
Each
Units
2 NO/NC - Front Mount 1 A ac, 2 A dc 24 V dc, 240 V ac DPST Screw - - - - - -
RS Stock No. 433-7766
Mfr. Part No.VZ13
kr 165,39
Each
Units
- - - Side Mount 140 A - - - - - - - VZ13 -
RS Stock No. 246-4507
Mfr. Part No.3RH1921-1FA22
BrandSiemens
kr 129,60
Each
Units
4 2NO/2NC - Front Mount 6 A - 4P Screw - - - - 3RH1 -
RS Stock No. 746-0705
Mfr. Part No.3RH1921-1HA22
BrandSiemens
kr 190,83
Each
Units
4 2NO/2NC Sirius Classic Snap Front - - 4P Screw - - - - 3RH1 -
RS Stock No. 257-3695
Mfr. Part No.VZ0
kr 73,28
Each
Units
1 - - Side Mount 20 A 690 V ac SP Screw -20°C +50°C -20 → +50 °C - VZ0 -
RS Stock No. 400-1467
Mfr. Part No.LAD8N11
kr 93,38
Each
Units
- - - - - - - - - - - - LAD8 -
RS Stock No. 922-7210
Mfr. Part No.FAZ-XHIN11
BrandEaton
kr 189,00
Each
Units
2 NO/NC - DIN Rail Mount 3 A ac, 500 mA dc 120 V dc, 240 V ac SPDT Screw - - - - FAZ -
RS Stock No. 243-9949
Mfr. Part No.GAC5
kr 213,62
1 Bag of 10
Bag(s)
- - - - - - - - - - - - GAC5 -
RS Stock No. 493-9110
kr 79,55
Each
Units
2 NO/NC TeSys U Series - 5 A 24 → 250 V ac/dc - - - - - - - -
RS Stock No. 711-6351
Mfr. Part No.CA4-04E
BrandABB
kr 150,75
Each
Units
4 4NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw - - - - CA4 -
RS Stock No. 400-1401
Mfr. Part No.GVAM11
kr 118,17
Each
Units
1 NO/NC - Side Mount - - SPDT Screw - - - - GVAM -
RS Stock No. 813-9415
Mfr. Part No.LADN226
kr 331,10
Each
Units
8 2NO/2NC - Front Mount 10 A 690 V ac 4P Lug Ring -40°C +70°C -40 → +70 °C - - -
RS Stock No. 488-7384
Mfr. Part No.2CDS200912R0001
BrandABB
kr 141,77
Each
Units
2 NO/NC - Side Mount - - DP Screw - - - - - -
RS Stock No. 512-9516
Mfr. Part No.OA3G01
BrandABB
kr 58,86
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 257-3768
Mfr. Part No.VZ11
kr 107,06
Each
Units
- - - Side Mount 32 A - - - - - - - VZ11 -
RS Stock No. 400-1473
Mfr. Part No.LAD8N20
kr 93,38
Each
Units
- - - - - - - - - - - - LAD8 -
RS Stock No. 394-9964
Mfr. Part No.LADN04
kr 203,73
Each
Units
4 4NC - Front Mount - - 4P Screw - - - - LADN -
RS Stock No. 395-0188
Mfr. Part No.GVAD0101
kr 112,62
Each
Units
2 2NC - Side Mount - 240 V dc, 690 V ac DP Screw - - - - GVAD -
RS Stock No. 257-3702
Mfr. Part No.VZ1
kr 90,60
Each
Units
1 - - Side Mount 25 A 690 V ac SP Screw -20°C +50°C -20 → +50 °C - VZ1 -
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