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 Number of Timing Ranges External Dimensions
RS庫存編號 314-286
製造零件編號3TX4010-2A
BrandSiemens
HK$53.65
單位
1 NO - Plug In 6 A - SP - - - - 3TX4 - -
RS庫存編號 394-9936
製造零件編號LADN11
HK$91.64
單位
2 NO/NC TeSys Front Mount 10 A - DP Screw - - - LADN - -
RS庫存編號 373-2249
製造零件編號YM-130
HK$69.05
單位
- - - - - - - - - - - - - -
RS庫存編號 394-9908
製造零件編號LADN22
HK$162.17
單位
4 2NO/2NC TeSys Front Mount 10 A 600 V ac 4P Screw -5°C +60°C - LADN - -
RS庫存編號 791-2824
製造零件編號A9A26924
HK$270.07
單位
1 NO/NC Acti 9 DIN Rail Mount 2 A dc, 6 A ac 24 → 130 V dc, 240 → 415 V ac SPCO Screw -35°C +70°C -35 → +70 °C iOF - -
RS庫存編號 246-5061
製造零件編號3RV1901-1A
BrandSiemens
HK$89.59
單位
2 NO/NC Sirius Classic Side Mount 2 A 24 V ac DP Screw - +60°C Maximum of +60 °C 3RV1 - -
RS庫存編號 257-3752
製造零件編號VZ7
HK$120.18
單位
2 NO/NC - - - - DP - - - - VZ7 - -
RS庫存編號 818-277
製造零件編號NHI11-PKZ0
BrandEaton
HK$112.10
單位
2 NO/NC - Side Mount 2 A dc, 3.5 A ac 220 V dc, 500 V ac DPST Screw - - - - - -
RS庫存編號 373-2255
製造零件編號YM-150
HK$88.35
單位
- - - - - - - - - - - - - -
RS庫存編號 685-1517
製造零件編號BFX1022
BrandLovato
HK$100.97
單位
4 2NO/2NC - Snap-On - - - Screw - - - - - -
RS庫存編號 394-9970
製造零件編號LADN02
HK$65.71
單位
2 2NC - Front Mount - - DP Screw - - - LADN - -
RS庫存編號 394-9879
製造零件編號LADN40
HK$160.95
單位
4 4NO TeSys Front Mount 10 A - 4P Screw - - - LADN - -
RS庫存編號 314-292
製造零件編號3TX4001-2A
BrandSiemens
HK$47.65
單位
1 NC - Plug In 6 A - SP - - - - 3TX4 - -
RS庫存編號 260-8987
製造零件編號23021608
HK$1,461.72
單位
- - - - - - - - - - - - - -
RS庫存編號 395-0144
製造零件編號GVAE11
HK$83.24
單位
2 NO/NC TeSys Front Mount 2.5 A 60 V dc, 240 V ac DP Screw - - - GVAE - -
RS庫存編號 400-1445
製造零件編號LADS2
HK$495.47
單位
2 NO/NC TeSys Front Mount 10 A 690 V - Screw -5°C +60°C -5 → +60 °C D - -
RS庫存編號 521-4579
製造零件編號5ST3010
BrandSiemens
HK$211.92
單位
2 NO/NC Sentron DIN Rail Mount 6 A 230 V ac DP Screw -5°C +40°C -5 → +40 °C 5ST3 - -
RS庫存編號 685-1504
製造零件編號BFX1011
BrandLovato
HK$47.05
單位
2 NO/NC - Snap-On - - - Screw - - - - - -
RS庫存編號 394-9920
製造零件編號LADN13
HK$115.36
單位
4 NO/3NC - Front Mount - - 4P Screw - - - LADN - -
RS庫存編號 246-4507
製造零件編號3RH1921-1FA22
BrandSiemens
HK$65.45
單位
4 2NO/2NC - Front Mount 6 A - 4P Screw - - - 3RH1 - -