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. 488-6448
Mfr. Part No.S2C-S/H6R
BrandABB
kr 203,69
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. 445-8043
Mfr. Part No.1SBN010040R1122 - CA5-22M
BrandABB
kr 183,95
Each
Units
4 2NO/2NC - Front Mount 6 A 24 V dc, 230 V ac 4P Screw - - - - CA5 -
RS Stock No. 445-0421
Mfr. Part No.1SAM201902R1001
BrandABB
kr 96,91
Each
Units
2 NO/NC - Side Mount 2 A dc, 6 A ac 220 V dc, 400 V ac DP - - - - - HK1 -
RS Stock No. 727-1549
Mfr. Part No.1SCA022353R4890
BrandABB
kr 73,58
Each
Units
1 NC - Snap-On 6 A ac, 10 A dc 400 V dc, 690 V ac SP Screw - - - - OA1G -
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. 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. 512-9516
Mfr. Part No.OA3G01
BrandABB
kr 58,86
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 711-6357
Mfr. Part No.CA4-31E
BrandABB
kr 150,75
Each
Units
4 3NO/NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw - - - - CA4 -
RS Stock No. 435-421
Mfr. Part No.2CCS800900R0021
BrandABB
kr 529,41
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 -
RS Stock No. 445-8093
Mfr. Part No.GHE3401321R0001
BrandABB
kr 204,97
Each
Units
2 2NO - DIN Rail Mount 4 A 220 V dc, 400 V ac DP Screw -25°C +55°C -25 → +55 °C - ESB -
RS Stock No. 183-3782
Mfr. Part No.359624
BrandABB
kr 203,69
Each
Units
2 NC/NO - DIN Rail Mount 10 A 24 V ac/dc - - - - - - S2C -
RS Stock No. 711-6395
Mfr. Part No.CA4-13N
BrandABB
kr 150,75
Each
Units
4 NO/3NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw -40°C +70°C -40 → +70 °C - CA4 -
RS Stock No. 183-3645
Mfr. Part No.359625
BrandABB
kr 203,69
Each
Units
2 2NO - DIN Rail Mount 10 A 24 V ac/dc - - - - - - S2C -
RS Stock No. 445-8021
Mfr. Part No.1SBN010010R1001
BrandABB
kr 47,11
Each
Units
1 NC - Front Mount - - SP Screw - - - - CA5 -
RS Stock No. 445-8166
Mfr. Part No.GJL1201330R0003 - CAF6-11M
BrandABB
kr 71,78
Each
Units
2 NO/NC - Front Mount - 240 V dc, 500 V ac DP Screw - - - - B6 -
RS Stock No. 711-6329
Mfr. Part No.1SBN010110R1001
BrandABB
kr 39,03
Each
Units
1 NC - Front Mount 6 A 600 V dc, 690 V ac SP Screw - - - - CA4 -
RS Stock No. 831-9191
Mfr. Part No.1SDA066423R1
BrandABB
kr 180,36
Each
Units
1 CO - - - 24 V dc - - - - - - XT1 -
RS Stock No. 711-6379
Mfr. Part No.CA4-22U
BrandABB
kr 150,75
Each
Units
4 2NO/2NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw - - - - CA4 -
New
RS Stock No. 194-6338
Mfr. Part No.1SBN010013R1010
BrandABB
kr 49,85
Each
Units
1 NO - Front Mount 6 A 127 V - Screw - - - - - -
RS Stock No. 467-5490
Mfr. Part No.1SDA051370R1
BrandABB
kr 323,13
Each
Units
1 NO/NC - - - - SPDT - - - - - TMAX -