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.
Description:
The Eaton Contactors for Motors works with a
subrange of 95A, It has three number of poles with a utilization category AC-1 for non-inductive or slightly inductive loads and resistance furnaces, NAC-3 for normal AC induction motors (starting, switch off ...
Description:
On / Off Switch for DIN rail assemblyTypes
with 32A to 63A applicable as load disconnecting switches after EN 60947-1With separate handle locking deviceSealable witch positionAuxiliary current switch can be mountedPosition indicator red / green on 5TE83, 4, & 5 ...
Description:
The TeSys U is a modular system for
motor control; it enables the user to create a customised solution for their control requirements, from a series of standard modules. The plug-in modules allow the assembly and wiring before the selection ...
Description:
Acti9 iACT Auxiliary Contactors are suitable for iCT
contactors, these auxiliaries allow different operations. iACTs allows indication or control of the "open"or "closed" position of the contactor power contactsiACTp is an interference suppressor which limits overvoltages on the control circuitiACTc ...
