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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Omschrijving Prijs 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 CAD Drawing Series Number of Timing Ranges
RS-stocknr. 735-2715
Fabrikantnummer3SB1400-0A
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€ 9,28
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Fabrikantnummer3RV2901-1E
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€ 11,00
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2 NO/NC Sirius Innovation Plug In 1 A dc, 2.5 A ac 60 V dc, 230 V ac DP Screw -20°C +60°C -20 → +60 °C - 3RV2 -
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Fabrikantnummer3TX4001-2A
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€ 5,43
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1 NC - Plug In 6 A - SP - - - - - 3TX4 -
RS-stocknr. 314-286
Fabrikantnummer3TX4010-2A
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€ 5,43
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1 NO - Plug In 6 A - SP - - - - - 3TX4 -
RS-stocknr. 246-5061
Fabrikantnummer3RV1901-1A
FabrikantSiemens
€ 9,92
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2 NO/NC Sirius Classic Side Mount 2 A 24 V ac DP Screw - +60°C Maximum of +60 °C - 3RV1 -
RS-stocknr. 706-1888
Fabrikantnummer3RV2901-1A
FabrikantSiemens
€ 11,00
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2 NO/NC Sirius Innovation Plug In 2 A dc, 10 A ac 250 V dc, 690 V ac DP Screw -20°C +60°C -20 → +60 °C - 3RV2 -
RS-stocknr. 246-5055
Fabrikantnummer3RV1901-1E
FabrikantSiemens
€ 9,92
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Aantal stuks
2 NO/NC Sirius Classic Front Mount - - DP Screw - - - - 3RV1 -
RS-stocknr. 243-7202
Fabrikantnummer3RV1901-1D
FabrikantSiemens
€ 8,23
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1 NO/NC Sirius Classic Front Mount 2 A 24 V ac SPDT Screw - +60°C Maximum of +60 °C - 3RV1 -
RS-stocknr. 706-0879
Fabrikantnummer3RH2911-1DA11
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€ 14,00
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2 NO/NC Sirius Innovation Snap-On 10 A 250 V dc, 690 V ac DPST Screw -25°C +60°C -25 → +60 °C - - -
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Fabrikantnummer3RH2911-1FC22
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€ 25,00
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4 2NO/2NC Sirius Innovation Snap-On 6 A dc, 10 A ac 250 V dc, 690 V ac 4PST Screw -25°C +60°C -25 → +60 °C - 3RH2 -
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Fabrikantnummer3RH1921-1FA22
FabrikantSiemens
€ 13,80
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4 2NO/2NC - Front Mount 6 A - 4P Screw - - - - 3RH1 -
RS-stocknr. 706-0923
Fabrikantnummer3RH2911-1HA22
FabrikantSiemens
€ 15,60
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4 2NO/2NC Sirius Innovation Snap-On 6 A dc, 10 A ac 250 V dc, 690 V ac 4PST Screw -25°C +60°C -25 → +60 °C - 3RH2 -
RS-stocknr. 246-5077
Fabrikantnummer3RV1901-1B
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€ 9,92
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Aantal stuks
2 2NO Sirius Classic Side Mount 2 A 24 V ac DP - - +60°C Maximum of +60 °C - 3RV1 -
RS-stocknr. 706-0905
Fabrikantnummer3RH2911-1HA11
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€ 9,29
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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 -
RS-stocknr. 243-7533
Fabrikantnummer3RH1911-1FA22
FabrikantSiemens
€ 14,00
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4 2NO/2NC Sirius Classic Snap-On 6 A - 4P Screw - - - - 3RH1 -
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Fabrikantnummer3RH2911-2FA40
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€ 15,60
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4 4NO 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 -
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€ 7,28
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1 NC Sirius Innovation Snap-On 6 A ac, 10 A dc 250 V dc, 690 V ac SPST Screw -25°C +60°C -25 → +60 °C - 3RH2 -
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€ 13,60
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Fabrikantnummer3RH1921-2FA31
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4 3NO/NC Sirius Classic Snap-On - - 4P Cage Clamp - - - - 3RH1 -
RS-stocknr. 746-0718
Fabrikantnummer3RH1921-1JA11
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2 NO/NC Sirius Classic Lateral - - DP Screw - - - - 3RH1 -