Nader Circuit Breaker

Selection principle of low-voltage circuit breaker: 1) Determine the type and protection form of the circuit breaker according to the protection requirements of the line-determine the choice of frame type, device type or current limiting type. 2) The rated voltage UN of the circuit breaker should be ...

The principle of leakage switch tripping: There is a zero-sequence current transformer in the leakage switch. This transformer has a small number of turns on the primary side and a large number of turns on the secondary side. The power line (single-phase is generally live and neutral, and three-phase...

Circuit breaker is a very important electrical appliance in low-voltage power distribution network and electric drive system. It integrates control and multiple protection functions. In addition to completing the contact and breaking the circuit, it can also short-circuit the circuit or electrical eq...

The general selection principle of automatic air switch is: (1) Determine the type and protection form of the circuit breaker according to the protection requirements of the line-determine the choice of frame type, device type or current limiting type. (2) The rated voltage of the automatic air switc...

When the line is short-circuited or severely overloaded, the short-circuit current exceeds the instantaneous tripping setting current value, and the electromagnetic tripping device generates enough suction force to attract the armature and hit the lever, so that the hook rotates upwards around the sh...