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.


...
Read more Read less

Filters

Viewing 461 - 468 of 468 products
Results per page
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. 706-1894
Mfr. Part No.3RV2901-1D
BrandSiemens
HK$70.81
Each
units
1 NO/NC Sirius Innovation Plug In 1 A dc, 10 A ac 250 V dc, 690 V ac SPDT Screw -20°C +60°C -20 → +60 °C 3RV2 - -
RS Stock No. 901-0863
Mfr. Part No.11BGX1031
BrandLovato
HK$147.92
Each
units
4 3NO/NC - DIN Rail Mount 10 A 690 V 4PST Screw - - - BG - -
RS Stock No. 445-7983
Mfr. Part No.GHE3401321R0002
BrandABB
HK$249.51
Each
units
2 NO/NC - DIN Rail Mount - 220 V dc, 400 V ac DP Screw -25°C +55°C -25 → +55 °C ESB - -
RS Stock No. 178-8011
Mfr. Part No.DILA-XHIR22
BrandEaton
HK$296.44
Each
units
4 2NO/2NC - Front Fastening 4 (AC) A, 10 (DC) A 220 V dc, 500 V ac 4P Screw -25°C +60°C -25 → +60 °C DILA - -
RS Stock No. 901-0860
Mfr. Part No.11BGX1022
BrandLovato
HK$147.92
Each
units
4 2NO/2NC - DIN Rail Mount 10 A 690 V 4PST Screw - - - BG - -
RS Stock No. 122-0953
Mfr. Part No.BFCA-40
BrandWEG
HK$107.42
Each
units
4 4NO - Front Mount 10 A 690 V ac 4PST Screw - - -25 → +55 °C BFCA - -
RS Stock No. 122-0952
Mfr. Part No.BFCA-31
BrandWEG
HK$99.18
Each
units
4 3NO/NC - Front Mount 10 A 690 V ac 4PST Screw - - -25 → +55 °C BFCA - -
RS Stock No. 800-7295
Mfr. Part No.1SFN010820R3311
BrandABB
HK$192.06
Each
units
4 NC, NO - Side Mount 6 A 690 V ac DP Screw - - - CAL19 - -
Related Products
Prototyping is made super easy with this range ...
Description:
Prototyping is made super easy with this range of jumper wires from MicroElektronika. This pack contains 10 jumper wires in an assortment of colours. Jumper wires, often just referred to as jumpers, are wires used on breadboards to create electronic ...
The Digilent breadboard kit is a solderless kit ...
Description:
The Digilent breadboard kit is a solderless kit that accepts 20 to 29 AWG wires and comes with some jumper wires. It is back with rugged steel and includes 4 adhesive rubber feet. • 3x630 tie point terminal strips included• ...
The PIDG Crimp Terminal and Splice Introduction Service ...
Description:
The PIDG Crimp Terminal and Splice Introduction Service Kit from TE Connectivity contains 295 of the most popular terminals and splices from the PIDG and Plast-Grip ranges. The kit comes in a rugged plastic case which stores multiple different types ...
The kit contains a range of butt splices, ...
Description:
The kit contains a range of butt splices, receptacles, ring terminals and spade terminals. Information on the pieces and their part numbers can be found in the table below. This crimp terminal & splice case from TE Connectivity contains some ...