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. 209-5915
Mfr. Part No.M5725317
BrandMETCASE
TWD4,785.00
Each
units
- - - - - - - - - - - Mettec 263 mm 250 x 263 x 150mm
RS Stock No. 209-5820
Mfr. Part No.M5725207
BrandMETCASE
TWD3,468.00
Each
units
- - - - - - - - - - - Mettec 250 mm 250 x 250 x 120mm
RS Stock No. 209-5921
Mfr. Part No.M5735317
BrandMETCASE
TWD5,445.00
Each
units
- - - - - - - - - - - Mettec 263 mm 350 x 263 x 150mm
RS Stock No. 209-5779
Mfr. Part No.M5725234
BrandMETCASE
TWD5,826.00
Each
units
- - - - - - - - - - - Mettec 263 mm 250 x 263 x 120mm
RS Stock No. 209-5577
Mfr. Part No.M5725104
BrandMETCASE
TWD2,682.00
Each
units
- - - - - - - - - - - Mettec 250 mm 250 x 250 x 85mm
RS Stock No. 209-5612
Mfr. Part No.M5720107
BrandMETCASE
TWD2,566.00
Each
units
- - - - - - - - - - - Mettec 130 mm 200 x 130 x 85mm
RS Stock No. 209-5836
Mfr. Part No.M5725227
BrandMETCASE
TWD5,174.00
Each
units
- - - - - - - - - - - Mettec 250 mm 250 x 250 x 120mm
RS Stock No. 209-5606
Mfr. Part No.M5716107
BrandMETCASE
TWD2,260.00
Each
units
- - - - - - - - - - - Mettec 130 mm 160 x 130 x 85mm
RS Stock No. 209-5527
Mfr. Part No.M5720104
BrandMETCASE
TWD2,566.00
Each
units
- - - - - - - - - - - Mettec 130 mm 200 x 130 x 85mm
RS Stock No. 209-5410
Mfr. Part No.M5723004
BrandMETCASE
TWD2,258.00
Each
units
- - - - - - - - - - - Mettec 180 mm 230 x 180 x 50mm
RS Stock No. 209-5791
Mfr. Part No.M5735214
BrandMETCASE
TWD3,778.00
Each
units
- - - - - - - - - - - Mettec 263 mm 350 x 263 x 120mm
RS Stock No. 209-5870
Mfr. Part No.M5735217
BrandMETCASE
TWD4,815.00
Each
units
- - - - - - - - - - - Mettec 263 mm 350 x 263 x 120mm
RS Stock No. 209-5892
Mfr. Part No.M5725314
BrandMETCASE
TWD4,785.00
Each
units
- - - - - - - - - - - Mettec 263 mm 250 x 263 x 150mm
RS Stock No. 209-5814
Mfr. Part No.M5723217
BrandMETCASE
TWD2,972.00
Each
units
- - - - - - - - - - - Mettec 193 mm 230 x 193 x 120mm
RS Stock No. 209-6463
Mfr. Part No.M5735104
BrandMETCASE
TWD3,708.00
Each
units
- - - - - - - - - - - Mettec 250 mm 350 x 250 x 85mm
RS Stock No. 209-5533
Mfr. Part No.M5723104
BrandMETCASE
TWD2,838.00
Each
units
- - - - - - - - - - - Mettec 180 mm 230 x 180 x 85mm
RS Stock No. 209-5757
Mfr. Part No.M5725224
BrandMETCASE
TWD5,174.00
Each
units
- - - - - - - - - - - Mettec 250 mm 250 x 250 x 120mm
RS Stock No. 209-5864
Mfr. Part No.M5735207
BrandMETCASE
TWD4,020.00
Each
units
- - - - - - - - - - - Mettec 250 mm 350 x 250 x 120mm
RS Stock No. 209-5785
Mfr. Part No.M5735204
BrandMETCASE
TWD3,971.00
Each
units
- - - - - - - - - - - Mettec 250 mm 350 x 250 x 120mm