What triggers the opening or closing of the 52 auxiliary contacts?

The opening or closing of the 52 auxiliary contacts is primarily triggered by the position of the breaker main contacts. In a circuit breaker system, the 52 contacts provide information about the status of the breaker—whether it is open or closed. When the breaker is engaged, the main contacts close, which in turn influences the state of the auxiliary contacts.

These auxiliary contacts can be used for signaling purposes, such as providing feedback to control systems or indicating the operational status of the breaker. Conversely, when the breaker trips and the main contacts open, the auxiliary contacts will also change their state to reflect that the breaker is no longer conducting. This linkage between the main contact position and the auxiliary contacts is crucial for ensuring proper monitoring and control of electrical systems.

While voltage fluctuations and current overload may affect the overall operation of the breaker, they do not directly cause the 52 auxiliary contacts to open or close. Similarly, external manual control may influence the breaker operation, but the fundamental mechanism for the state of the auxiliary contacts is inherently tied to the main contact's position.