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 791-2843
製造零件編號A9C18309
HK$1,764.00
單位
- - Acti 9 DIN Rail Mount - 24 → 48 V ac - Screw -5°C +50°C -5 → +50 °C iACT - -
RS庫存編號 759-033
製造零件編號LA1KN02
HK$53.87
單位
2 2NC - Clip On 10 A 600 V ac DP Screw - - - LA1K - -
RS庫存編號 815-3256
製造零件編號9999DD10
HK$131.30
單位
1 NO - DIN Rail Mount 5 A 600 V ac SPST Quick Connect 0°C +65°C 0 → +65 °C - - -
RS庫存編號 246-4513
製造零件編號3RH1921-1FA04
BrandSiemens
HK$105.00
單位
4 4NC Sirius Classic Front Mount 6 A - 4P Screw - - - 3RH1 - -
RS庫存編號 136-3685
製造零件編號3RH2911-1XA31-0MA0
BrandSiemens
HK$98.09
單位
4 3NO/NC Sirius Innovation Snap-On 10 A 600 V dc, 690 V ac 4PST Screw -25°C +60°C -25 → +60 °C 3RH29 - -
RS庫存編號 121-6872
BrandRS PRO
HK$89.61
單位
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 → +60 °C AR - -
RS庫存編號 513-0213
製造零件編號DILM150-XHI31
BrandEaton
HK$107.00
單位
4 3NO/NC - Front Mount 4 A ac, 10 A dc 220 V dc, 500 V ac 4PST Screw - - - DILM - -
RS庫存編號 791-2846
製造零件編號A9C15918
HK$455.00
單位
- - Acti 9 DIN Rail Mount - 48 → 127 V ac - Screw -5°C +50°C -5 → +50 °C iACT - -
RS庫存編號 243-7202
製造零件編號3RV1901-1D
BrandSiemens
HK$73.88
單位
1 NO/NC Sirius Classic Front Mount 2 A 24 V ac SPDT Screw - +60°C Maximum of +60 °C 3RV1 - -
RS庫存編號 922-7210
製造零件編號FAZ-XHIN11
BrandEaton
HK$167.41
單位
2 NO/NC - DIN Rail Mount 3 A ac, 500 mA dc 120 V dc, 240 V ac SPDT Screw - - - FAZ - -
RS庫存編號 759-049
製造零件編號LA1KN40
HK$83.00
單位
4 4NO - Clip On 10 A 600 V ac 4P Screw - - - LA1K - -
RS庫存編號 866-1495
製造零件編號XTCEXSBN11
BrandEaton
HK$483.96
單位
2 NO/NC - Side Mount 10 A - DPDT Screw - - - - - -
RS庫存編號 246-4529
製造零件編號3RH1921-1FA31
BrandSiemens
HK$89.78
單位
4 3NO/NC Sirius Classic Front Mount 6 A - 4P Screw - - - 3RH1 - -
RS庫存編號 815-3244
製造零件編號9999DD20
HK$218.14
單位
2 2NO - DIN Rail Mount 5 A 600 V ac - Quick Connect 0°C +65°C 0 → +65 °C - - -
RS庫存編號 121-6873
BrandRS PRO
HK$20.37
單位
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 → +60 °C MSK - -
RS庫存編號 482-471
製造零件編號DF14AM1
HK$80.50
單位
1 - - DIN Rail Mount 50 A - SP - - - - DF14 - -
RS庫存編號 922-7213
製造零件編號FAZ-XHINW1
BrandEaton
HK$185.76
單位
2 CO - DIN Rail Mount 3 A ac, 500 mA dc 120 V dc, 240 V ac SPCO Screw - - - FAZ - -
RS庫存編號 759-055
製造零件編號LA1KN22
HK$118.97
單位
4 2NO/2NC TeSys Clip On 10 A 600 V ac 4P Screw - - - LA1K - -
RS庫存編號 685-1485
製造零件編號BFX1013
BrandLovato
HK$114.73
單位
4 NO/3NC - Snap-On - - - Screw - - - - - -
RS庫存編號 136-3697
製造零件編號3RH2911-4FA40
BrandSiemens
HK$108.72
單位
4 4NO Sirius Innovation Snap-On 10 A 600 V dc, 690 V ac 4PST Ring Cable -25°C +60°C -25 → +60 °C 3RH29 - -