Electronic molded case circuit breaker DS-3E 1250A 3P with mounted OF

Molded Case Circuit Breaker with auxiliary contacts is a type of MCCB that includes additional electrical contacts that are mechanically linked to the circuit breakers operating mechanism. These auxiliary contacts provide a means of monitoring the status of the circuit breaker and can be used for various control and signaling purposes. The auxiliary contacts are physically connected to the operating mechanism of the MCCB. As the circuit breaker opens or closes due to manual operation or a trip event, the auxiliary contacts also change their position accordingly. The auxiliary contacts can indicate whether the MCCB is in the open or closed position. When the MCCB is closed and allowing current to flow through the circuit, the auxiliary contacts may be in a closed position, completing an electrical circuit. MCCBs with auxiliary contacts provide added functionality and versatility to electrical systems, allowing for better control and monitoring. As with any electrical device, proper selection, installation, and compliance with safety standards are crucial to ensure reliable and safe operation.