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 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 - -
RS庫存編號 685-1504
製造零件編號BFX1011
BrandLovato
HK$88.32
單位
2 NO/NC - Snap-On - - - Screw - - - - - -
RS庫存編號 331-3696
BrandRS PRO
HK$57.74
單位
2 NO/NC - DIN Rail Mount - 240 V ac DP - - - - - - -
RS庫存編號 392-8967
製造零件編號3RH1921-1CA10
BrandSiemens
HK$58.23
單位
1 NO Sirius Classic Snap-On - - SP Screw - - - 3RH1 - -
RS庫存編號 246-5077
製造零件編號3RV1901-1B
BrandSiemens
HK$89.78
單位
2 2NO Sirius Classic Side Mount 2 A 24 V ac DP - - +60°C Maximum of +60 °C 3RV1 - -
RS庫存編號 493-9110
HK$92.34
單位
2 NO/NC TeSys U Series - 5 A 24 → 250 V ac/dc - - - - - - - -
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 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 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 272-870
製造零件編號GVAED011
HK$149.18
單位
2 NO/NC - Front Mount - - DP - - - - GVAE - -
RS庫存編號 394-9914
製造零件編號LADN20
HK$67.66
單位
2 2NO TeSys Front Mount 10 A - DP Screw - - - LADN - -
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 445-8043
製造零件編號1SBN010040R1122 - CA5-22M
BrandABB
HK$328.90
單位
4 2NO/2NC - Front Mount 6 A 24 V dc, 230 V ac 4P Screw - - - CA5 - -
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 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 706-1917
製造零件編號3RV2901-2E
BrandSiemens
HK$85.69
單位
2 NO/NC Sirius Innovation Plug In 1 A dc, 2.5 A ac 60 V dc, 230 V ac DP Cage Clamp -20°C +60°C -20 +60 °C - - -
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 608-8999
製造零件編號LA1LC012
HK$1,876.16
單位
5 4NO/NC - Side Mount - - 5P Screw - - - LA1L - -
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 209-5410
製造零件編號M5723004
BrandMETCASE
HK$574.40
單位
- - - - - - - - - - - Mettec 230 x 180 x 50mm 230 mm