Single phase db box distribution board 6 way db box 3 phase

Product knowledge

The cabinet consists of the following part

Circuit Breaker

Circuit breaker: both switch, is the main component of the distribution cabinet, commonly used air switch. Leakage switch. Dual power automatic transfer switch

Air switch:

the concept of air switch:

The air switch is also the air circuit breaker, which is connected, broken and carries the rated working current and short circuit, overload and other fault currents in the circuit, and can quickly break the circuit in the case of overload, short circuit, undervoltage and so on, for reliable protection.

The design types of dynamic and static contacts and contact rods of circuit breakers are various, but the main purpose is to improve the breaking capacity of circuit breakers. At present, the current limiting principle, which limits the peak value of short circuit current when breaking by using certain contact structure, has obvious effect on improving the breaking capacity of circuit breakers, and is widely used.

single phase db box distribution board 6 way db box 3 phase