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 441 - 460 of 467 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. 791-2840
Mfr. Part No.A9C15916
HK$480.48
Each
units
2 2NO Acti 9 DIN Rail Mount 2 A 24 130 V dc, 24 240 V ac DP Screw -5°C +50°C - iACT - -
RS Stock No. 743-4992
Mfr. Part No.DILM32-XHI11-S
BrandEaton
HK$153.07
Each
units
2 NO/NC - Side Mount 4 A ac, 10 A dc 220 V dc, 500 V ac DP Screw - - - DILM - -
RS Stock No. 706-0992
Mfr. Part No.3RH2911-2HA22
BrandSiemens
HK$113.14
Each
units
4 2NO/2NC Sirius Innovation Snap-On 6 A ac, 10 A dc 250 V dc, 690 V ac 4PST Cage Clamp -25°C +60°C -25 +60 °C 3RH2 - -
RS Stock No. 706-0905
Mfr. Part No.3RH2911-1HA11
BrandSiemens
HK$58.46
Each
units
2 NO/NC Sirius Innovation Snap-On 6 A dc, 10 A ac 250 V dc, 690 V ac DPST Screw -25°C +60°C -25 +60 °C 3RH2 - -
New
RS Stock No. 192-0814
Mfr. Part No.66427
BrandABB
HK$1,222.02
Each
units
3 CO - DIN Rail Mount - 250 V ac/dc SPDT - - - - - - -
RS Stock No. 136-3693
Mfr. Part No.3RH2911-2XA04-0MA0
BrandSiemens
HK$113.14
Each
units
4 4NC Sirius Innovation Snap-On 10 A 600 V dc, 690 V ac 4PST Spring Load -25°C +60°C -25 → +60 °C 3RH29 - -
RS Stock No. 209-5735
Mfr. Part No.M5723214
BrandMETCASE
HK$968.17
Each
units
- - - - - - - - - - - - - -
RS Stock No. 178-8010
Mfr. Part No.DILA-XHIR11
BrandEaton
HK$157.19
Each
units
2 NO/NC - Front Fastening 4 (AC) A, 10 (DC) A 220 V dc, 500 V ac 2P Screw -25°C +60°C -25 +60 °C DILA - -
RS Stock No. 392-7598
Mfr. Part No.3RH1921-2FA22
BrandSiemens
HK$115.09
Each
units
4 2NO/2NC Sirius Classic Snap-On - - 4P Cage Clamp - - - 3RH1 - -
RS Stock No. 121-6868
BrandRS PRO
HK$46.43
Each
units
1 NC - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C HRS - -
RS Stock No. 711-6341
Mfr. Part No.CAT4-11U
BrandABB
HK$107.65
Each
units
2 NO/NC - Front Mount 6 A 600 V dc, 690 V ac DP Screw - - - CAT4 - -
RS Stock No. 751-5916
Mfr. Part No.3RT1966-4G
BrandSiemens
HK$826.54
Each
units
- - Sirius Classic - - - - - - - - 3RT1 - -
RS Stock No. 122-0926
Mfr. Part No.BFC0-02
BrandWEG
HK$61.55
Each
units
2 2NC - Front Mount 10 A 690 V ac DPST Screw - - -25 → +55 °C BFC0 - -
RS Stock No. 333-546
Mfr. Part No.HI11-P1/P3-Z/SOND
BrandEaton
HK$110.40
Each
units
2 NO/NC - Side Mount 10 A - - Screw - +50°C - - - -
RS Stock No. 121-6875
BrandRS PRO
HK$31.11
Each
units
- - - DIN Rail Mount - - - Screw -25°C +60°C -25 +60 °C MSK - -
RS Stock No. 746-0783
Mfr. Part No.3RH2911-1GA04
BrandSiemens
HK$113.14
Each
units
4 4NC Sirius Innovation Snap Front 10 A 600 V dc, 690 V ac 4P Screw - - -25 +60 °C 3RH2 - -
RS Stock No. 488-6448
Mfr. Part No.S2C-S/H6R
BrandABB
HK$263.69
Each
units
2 NO/NC - Side Mount 1.5 A dc, 6 A ac 110 V dc, 240 V ac DP Screw - - - S2C - -
RS Stock No. 122-1059
Mfr. Part No.BFB-13 EN
BrandWEG
HK$115.77
Each
units
4 NO/3NC - Front Mount 10 A 690 V ac 4PST Screw - - -25 → +55 °C BFB - -
RS Stock No. 791-2837
Mfr. Part No.A9A26927
HK$354.18
Each
units
2 NO/NC Acti 9 DIN Rail Mount 2 A dc, 6 A ac 24 → 130 V dc, 240 → 415 V ac DP Screw -35°C +70°C -35 → +70 °C iSD - -
RS Stock No. 711-6398
Mfr. Part No.CA4-31N
BrandABB
HK$178.35
Each
units
4 3NO/NC - Front Mount 6 A 600 V dc, 690 V ac 4P Screw -40°C +70°C -40 → +70 °C CA4 - -
Related Products
Series of standard combination spanners with 15° angleVariable ...
Description:
Series of standard combination spanners with 15° angleVariable handle cross-section provides better grip and stability for added comfortImproved accessibility thanks to unobstructed viewOptimised open-end / handle geometry for greater accessibilitySatin chrome finish12-point OGV profile for a high torque without ...
Bahco non-sparking combination spanner provides grip and applies ...
Description:
Bahco non-sparking combination spanner provides grip and applies torque to various objects usually nuts and bolts. It also prevents them from turning. Combination wrench, both ends fit the same size of bolts and nutsMaterial: Aluminium BronzeNon-sparkingDie-forgedProduced according to DIN 3113. ...
Manufactured from chrome vanadium steel with chrome finish ...
Description:
Manufactured from chrome vanadium steel with chrome finish to ISO 3318 and NF E 74.304 standards. The ring end of the spanner is offset by 70 degrees to give excellent clearance in confined and restricted spaces. Also features the Facom ...
RS Pro Combination Spanner is a tool suitable ...
Description:
RS Pro Combination Spanner is a tool suitable for professionals and enthusiast. RS Pro spanners are manufactured with a quality in mind and made from a chrome-vanadium steel to ensure a long service. Spanners comprising of a ring style spanner ...