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. 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. 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. 209-5870
Mfr. Part No.M5735217
BrandMETCASE
kr 1 314,53
Each
Units
- - - - - - - - - - - - Mettec 350 x 263 x 120mm
RS Stock No. 394-9914
Mfr. Part No.LADN20
kr 63,02
Each
Units
2 2NO TeSys Front Mount 10 A - DP Screw - - - - LADN -
RS Stock No. 326-734
Mfr. Part No.22DILE
BrandEaton
kr 142,57
Each
Units
4 2NO/2NC - Front Mount 2.5 A dc, 4 A ac 220 V dc, 500 V ac 4PST Screw - - - - - -
RS Stock No. 395-0352
Mfr. Part No.GV2AF3
kr 41,81
Each
Units
- - - - - - - - - - - - GV2A -
RS Stock No. 395-0100
Mfr. Part No.GVAN20
kr 70,90
Each
Units
2 2NO - Side Mount - 240 V dc, 690 V ac DP Screw - - - - GVAN -
RS Stock No. 493-0652
Mfr. Part No.DILM32-XHI22
BrandEaton
kr 96,77
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. 818-277
Mfr. Part No.NHI11-PKZ0
BrandEaton
kr 74,45
Each
Units
2 NO/NC - Side Mount 2 A dc, 3.5 A ac 220 V dc, 500 V ac DPST Screw - - - - - -
RS Stock No. 759-027
Mfr. Part No.LA1KN11
kr 55,15
Each
Units
2 NO/NC TeSys Clip On 10 A 600 V ac DP Screw - - - - LA1K -
RS Stock No. 791-2840
Mfr. Part No.A9C15916
kr 330,97
Each
Units
2 2NO Acti 9 DIN Rail Mount 2 A 24 130 V dc, 24 240 V ac DP Screw -5°C +50°C - - iACT -
RS Stock No. 394-9970
Mfr. Part No.LADN02
kr 63,02
Each
Units
2 2NC - Front Mount - - DP Screw - - - - LADN -
RS Stock No. 610-3537
Mfr. Part No.3LD9200-5C
BrandSiemens
kr 147,56
Each
Units
2 NO/NC - Floor - - DP - - - - 3D CAD Model - -
RS Stock No. 776-2963
Mfr. Part No.A9N26929
kr 713,95
Each
Units
2 CO - DIN Rail Mount 6 (ac) A, 6 (dc) A 130 V dc, 415 V ac DPDT Clamp -37°C +70°C -37 → +70 °C 3D CAD Model - -
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. 608-8775
Mfr. Part No.GV7AC01
kr 344,39
Each
Units
- - - - - - - - - - - - GV7A -
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. 685-1517
Mfr. Part No.BFX1022
BrandLovato
kr 102,45
Each
Units
4 2NO/2NC - Snap-On - - - Screw - - - - - -
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. 394-9964
Mfr. Part No.LADN04
kr 203,73
Each
Units
4 4NC - Front Mount - - 4P Screw - - - - LADN -
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