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 61 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 Series External Dimensions External Length
RS Stock No. 445-8043
Mfr. Part No.1SBN010040R1122 - CA5-22M
BrandABB
HK$314.14
Each
units
4 2NO/2NC - Front Mount 6 A 24 V dc, 230 V ac 4P Screw - - - CA5 - -
RS Stock No. 711-6335
Mfr. Part No.CC4-01
BrandABB
HK$151.69
Each
units
1 NC - Front Mount 6 A 600 V dc, 690 V ac SP Screw -40°C +70°C -40 → +70 °C CC4 - -
RS Stock No. 467-5490
Mfr. Part No.1SDA051370R1
BrandABB
HK$597.28
Each
units
1 NO/NC - - - - SPDT - - - - TMAX - -
RS Stock No. 435-421
Mfr. Part No.2CCS800900R0021
BrandABB
HK$427.93
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. 711-6376
Mfr. Part No.CA4-04M
BrandABB
HK$178.35
Each
units
4 4NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw - - - CA4 - -
RS Stock No. 711-6354
Mfr. Part No.CA4-22E
BrandABB
HK$178.35
Each
units
4 2NO/2NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw - - - CA4 - -
RS Stock No. 512-9516
Mfr. Part No.OA3G01
BrandABB
HK$89.43
Each
units
- - - - - - - - - - - - - -
RS Stock No. 711-6367
Mfr. Part No.CA4-13M
BrandABB
HK$178.35
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. 183-3782
Mfr. Part No.359624
BrandABB
HK$404.53
Each
units
2 NC/NO - DIN Rail Mount 10 A 24 V ac/dc - - - - - S2C - -
RS Stock No. 183-3711
Mfr. Part No.470900
BrandABB
HK$390.23
Each
units
- - - DIN Rail Mount - - - - - - - SN201 - -
RS Stock No. 711-6379
Mfr. Part No.CA4-22U
BrandABB
HK$178.35
Each
units
4 2NO/2NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw - - - CA4 - -
RS Stock No. 488-6448
Mfr. Part No.S2C-S/H6R
BrandABB
HK$263.69
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. 711-6317
Mfr. Part No.1SBN010110R1010
BrandABB
HK$55.63
Each
units
1 NO - Front Mount 6 A 600 V dc, 690 V ac SP Screw - - - CA4 - -
RS Stock No. 194-6338
Mfr. Part No.1SBN010013R1010
BrandABB
HK$58.62
Each
units
1 NO - Front Mount 6 A 127 V - Screw - - - - - -
RS Stock No. 711-6395
Mfr. Part No.CA4-13N
BrandABB
HK$178.35
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. 614-0845
Mfr. Part No.2CDS200970R0001
BrandABB
HK$157.24
Each
units
1 NC - - 2 A 50 V dc, 230 V ac SP - - - - - - -
RS Stock No. 711-6351
Mfr. Part No.CA4-04E
BrandABB
HK$178.35
Each
units
4 4NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw - - - CA4 - -
RS Stock No. 512-9500
Mfr. Part No.OA4B01
BrandABB
HK$137.85
Each
units
1 NC - Snap-On - - SP - - - - - - -
RS Stock No. 183-3710
Mfr. Part No.470901
BrandABB
HK$390.23
Each
units
1 - - DIN Rail Mount - - - - - - - SN201 - -
RS Stock No. 512-9493
Mfr. Part No.OA4B10
BrandABB
HK$182.01
Each
units
1 NO - Snap-On - - SP - - - - - - -