MCCB Accessories JCOF Auxiliary Contact

JCOF Auxiliary contacts (or switches) are supplementary contacts that are added to a circuit to protect the main contact. This accessory allows you to check the status of a Miniature Circuit Breaker or Supplementary Protector from a remote. Simply explained, it aids in remotely determining whether the breaker is open or closed. This device can be used for a variety of purposes other than remote status indication
The Miniature Circuit Breaker will turn off the supply to the motor and protect it from the fault if the power circuit has a fault (short-circuit or overload). However, a closer examination of the control circuit reveals that the connections remain closed, supplying electricity to the contactor coil unnecessarily.
What is the function of the auxiliary contact?
When an overload triggers a MCB, the wire to the MCB may burn. If this happens frequently, system may begin to smoke. Auxiliary contact are devices that allow one switch to control another (typically larger) switch.
The auxiliary contact has two sets of low current contacts on either end and a coil with high-power contacts inside. The group of contacts designated as “low voltage” is frequently identified.
Auxiliary contact, similar to main power contactor coils, which are rated for continuous duty throughout a plant, contain time delay elements that prevent arcing and possible damage if the auxiliary contact opens while the main contactor is still energized.
Auxiliary contact uses:
Auxiliary contact is used to get the feedback of main contact whenever a trip occurs
Auxiliary contact keeps your circuit breakers and other equipment protected.
Auxiliary contact provides better protection against electrical damages.
Auxiliary contact reduces the possibility of electrical failure.
Auxiliary contact contributes to circuit breaker durability.

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