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Most circuit breaker problems are due to loose electrical connections. breakers. When a circuit breaker trips, it releases a cocked spring mechanism that separates the electrical contacts.
This causes the voltage across the. open contacts of the circuit breaker to vary. In some instances. when the generator voltage and the power system voltage are. nearly in-phase, the voltage across the circuit breaker contacts. will be almost zero. However, a little later, there will be instances.