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\u00a0may 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 \u201clow voltage\u201d 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.<\/p>\n
\u00a0\u25cf OF: Auxiliary, it can provide MCB “trip” and “close” status information, providing valuable feedback for the status of circuit protection devices.\u00a0\u25cf Indicates the location of device contacts for easy monitoring and visual confirmation of MCB operation.
\n\u00a0\u25cf Special pin design is adopted and installed on the left side of MCB\/RCBO to ensure convenient and safe installation while maintaining correct alignment with the circuit protection device.<\/p>\n
| MAIN CONTACT<\/td>\n | AUXILIARY CONTACT<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||||||
| In an MCB, it is the principal contact mechanism that connects the load to the supply.<\/td>\n | Control, indicator, alarm, and feedback circuits use auxiliary contacts, also known as helpful contacts<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||||||
| The main contacts are NO (normally open) contacts, which signifies they will only establish contact when the MCB\u2019s magnetic coil is powered.<\/td>\n | Both NO (Normally Open) and NC (Normally Closed) contacts are accessible in auxiliary\u00a0contact<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||||||
| Main contact carries high voltage and high current<\/td>\n | Auxiliary contact carries low voltage and low current<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||||||
| Sparking occurs due to high current<\/td>\n | No sparking occurs in auxiliary contact<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||||||||||||||
| Main contacts are main terminal connection and motor connections<\/td>\n | Auxiliary contacts are utilised primarily in control circuits,\u00a0indication circuits, and feedback circuits.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nTechnical Data<\/h3>\n
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