Nader Circuit Breaker

High-voltage circuit breakers can be divided into four major components: conductive part, arc extinguishing part, insulating part, and operating part. The main structure and function of each component: (1) Conductive part. It mainly includes dynamic and static arc contacts, main contacts or intermedi...

The rated operating sequence of high-voltage circuit breakers is generally marked as O-0.3s-CO-180s-CO, or CO-15s CO. O represents an opening operation, and CO represents an opening operation immediately after a closing operation. 0.3s is the no-current interval time of the circuit breaker when the a...

The opening time of a high-voltage circuit breaker refers to the total time that the circuit breaker needs from receiving a trip command (that is, the tripping coil is applied with voltage) to the time the circuit breaker is opened until the three-phase arc is completely extinguished, called the full...

The rated peak withstand current (dynamic stability) of a high-voltage circuit breaker refers to the first half-wave current peak value of the rated short-term withstand current that the circuit breaker can carry under the specified use and performance conditions at the closing position. The duration...

The rated short-time withstand (thermally stable) current of a high-voltage circuit breaker refers to the effective value of the current that the circuit breaker can withstand when the circuit breaker is in the closed position during the rated short-circuit duration under the specified use and perfor...