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 Dimensions External Length
RS Stock No. 818-277
Mfr. Part No.NHI11-PKZ0
BrandEaton
MYR71.58
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. 333-546
Mfr. Part No.HI11-P1/P3-Z/SOND
BrandEaton
MYR67.53
Each
units
2 NO/NC - Side Mount 10 A - - Screw - +50°C - - - -
RS Stock No. 493-0652
Mfr. Part No.DILM32-XHI22
BrandEaton
MYR62.98
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. 818-283
Mfr. Part No.NHI21-PKZ0
BrandEaton
MYR99.83
Each
units
3 2NO/NC - Side Mount 2 A dc, 3.5 A ac 220 V dc, 500 V ac 3PST Screw - - - - - -
RS Stock No. 244-0107
Mfr. Part No.NHI-E-11-PKZ0
BrandEaton
MYR57.53
Each
units
2 NO/NC - Front Mount 1 A ac, 2 A dc 24 V dc, 240 V ac DPST Screw - - - - - -
RS Stock No. 922-7210
Mfr. Part No.FAZ-XHIN11
BrandEaton
MYR102.13
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. 513-0229
Mfr. Part No.DILM150-XHI22
BrandEaton
MYR68.11
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. 513-0184
Mfr. Part No.DILM150-XHI11
BrandEaton
MYR46.86
Each
units
2 NO/NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac DPST Screw - - - DILM - -
RS Stock No. 493-0674
Mfr. Part No.DILA-XHI31
BrandEaton
MYR67.95
Each
units
4 3NO/NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac 4PST Screw - - - DILA - -
RS Stock No. 847-3689
Mfr. Part No.Z-IHK-NA
BrandEaton
MYR196.19
Each
units
2 NO/NC - DIN Rail Mount 6 A 250 V ac - Screw - - - - - -
RS Stock No. 412-2621
Mfr. Part No.DILM820-XHI11-SI
BrandEaton
MYR89.73
Each
units
2 NO/NC - Side Mount 4 A ac, 10 A dc 220 V dc, 500 V ac DPST Screw - - - DILM - -
RS Stock No. 866-1495
Mfr. Part No.XTCEXSBN11
BrandEaton
MYR214.02
Each
units
2 NO/NC - Side Mount 10 A - DPDT Screw - +50°C - - - -
RS Stock No. 493-0680
Mfr. Part No.DILA-XHI22
BrandEaton
MYR53.48
Each
units
4 2NO/2NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac 4PST Screw - - - DILA - -
RS Stock No. 513-0213
Mfr. Part No.DILM150-XHI31
BrandEaton
MYR61.70
Each
units
4 3NO/NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac 4PST Screw - - - DILM - -
RS Stock No. 492-1692
Mfr. Part No.NHI-E-10-PKZ0
BrandEaton
MYR47.18
Each
units
1 NO - Front Mount 1 A ac, 2 A dc 110 V dc, 240 V ac SPST Screw - - - - - -
RS Stock No. 493-0630
Mfr. Part No.DILM32-XHI02
BrandEaton
MYR37.25
Each
units
2 2NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac DPST Screw - - - DILM - -
RS Stock No. 467-9666
Mfr. Part No.31DILE
BrandEaton
MYR82.81
Each
units
4 3NO/NC - Front Mount 2.5 A dc, 4 A ac 220 V dc, 500 V ac 4PST Screw - - - - - -
RS Stock No. 493-0624
Mfr. Part No.DILM32-XHI11
BrandEaton
MYR44.86
Each
units
2 NO/NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac DPST Screw - - - DILM - -
RS Stock No. 326-734
Mfr. Part No.22DILE
BrandEaton
MYR85.32
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. 454-8152
Mfr. Part No.NZM1-XHIV
BrandEaton
MYR192.54
Each
units
2 2NO - - 3 A dc, 4 A ac 220 V dc, 500 V ac DP Screw - - - NZM1 - -