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庫存編號 735-2715
製造零件編號3SB1400-0A
BrandSiemens
HK$135.34
單位
2 NO/NC - Front Mount 10 A 220 V dc, 400 V ac DPST Screw -25°C +70°C -25 → +70 °C - - -
RS庫存編號 467-5490
製造零件編號1SDA051370R1
BrandABB
HK$597.28
單位
1 NO/NC - - - - SPDT - - - - TMAX - -
RS庫存編號 326-712
製造零件編號11DILE
BrandEaton
HK$84.08
單位
2 NO/NC - Front Mount 2.5 A dc, 4 A ac 220 V dc, 500 V ac DPST Screw - - - - - -
RS庫存編號 395-0150
製造零件編號GVAD1010
HK$301.45
單位
2 2NO - Side Mount - 240 V dc, 690 V ac DP Screw - - - GVAD - -
RS庫存編號 279-6315
製造零件編號LA1KN04
HK$84.50
單位
4 4NC - Clip On 10 A 600 V ac 4P Screw - - - LA1K - -
RS庫存編號 395-0627
製造零件編號GVAE1
HK$63.95
單位
2 NO/NC - Front Mount - 60 V dc, 240 V ac DP Screw - - - GVAE - -
RS庫存編號 791-2852
製造零件編號A9C15419
HK$766.48
單位
- - Acti 9 DIN Rail Mount - 12 → 48 V ac - Screw -5°C +50°C -5 → +50 °C iATET - -
RS庫存編號 521-4591
製造零件編號5ST3012
BrandSiemens
HK$279.36
單位
2 2NC Sentron DIN Rail Mount 6 A 230 V ac DP Screw -5°C +40°C -5 +40 °C 5ST3 - -
RS庫存編號 257-3702
製造零件編號VZ1
HK$113.48
單位
1 - - Side Mount 25 A 690 V ac SP Screw -20°C +50°C -20 → +50 °C VZ1 - -
RS庫存編號 209-6463
製造零件編號M5735104
BrandMETCASE
HK$943.34
單位
- - - - - - - - - - - Mettec 350 x 250 x 85mm 350 mm
RS庫存編號 219-1439
製造零件編號HI11-P1/P3E-SOND
BrandEaton
HK$118.63
單位
2 NO/NC - Side Mount 10 A - - - - +50°C - - - -
RS庫存編號 874-4534
製造零件編號3VA9988-0AA11
BrandSiemens
HK$226.40
單位
6 4NO/2NC Sentron Side Mount 10 A - - Screw - - - 3VA - -
RS庫存編號 776-2957
製造零件編號A9N26924
HK$427.17
單位
1 CO Acti 9 DIN Rail Mount 6 A ac, 6 A dc 130 V dc, 415 V ac SPDT Clamp -35°C +70°C -35 +70 °C iC60 - -
RS庫存編號 243-9898
製造零件編號GAC0521
HK$355.78
單位
2 NO/NC - Clip On - - DP - - - - GAC0 - -
RS庫存編號 746-0705
製造零件編號3RH1921-1HA22
BrandSiemens
HK$113.34
單位
4 2NO/2NC Sirius Classic Snap Front - - 4P Screw - - - 3RH1 - -
RS庫存編號 326-633
製造零件編號22DILEM
BrandEaton
HK$142.08
單位
4 2NO/2NC - Front Mount 2.5 A dc, 4 A ac 220 V dc, 500 V ac 4PST Screw - - - - - -
RS庫存編號 373-2227
製造零件編號YM-80
HK$51.94
單位
- - - - - - - - - - - - - -
RS庫存編號 685-1523
製造零件編號BFX1020
BrandLovato
HK$88.32
單位
2 2NO - Snap-On - - - Screw - - - - - -
RS庫存編號 706-0967
製造零件編號3RH2911-2HA02
BrandSiemens
HK$64.98
單位
2 2NC Sirius Innovation Snap-On 6 A ac, 10 A dc 250 V dc, 690 V ac DPST Cage Clamp -25°C +60°C -25 → +60 °C 3RH2 - -
RS庫存編號 125-1382
製造零件編號A9C70114
HK$2,139.28
單位
- - Acti 9 - - - - - - - - iC60 - -