Nader Circuit Breaker

For miniature circuit breakers, 1P+N, 1P, 2P are generally used as on-off control of single-phase electrical appliances, but the effects are different. 1P-single pole circuit breaker, with thermal and magnetic trip function, only control live wire (phase wire), modulus 18mm; 1P+N-single pole +N circu...

Circuit breakers can be divided into distribution type circuit breakers, motor protection type circuit breakers, household protection type circuit breakers, leakage circuit breakers, etc. according to their use. According to their different protection characteristics, this article introduces how to c...

1. Calculation of rated current of single-phase load P = UI COS (power = voltage current power factor) In the formula: U-single-phase 220V; COS--load power factor, generally 0.8; For example: the total capacity of single-phase load electrical equipment is 20KW, the line rated current is calculated ac...

The household air switch is selected according to the purpose of the line. Air switch , (circuit breaker), full name automatic air circuit breaker, also known as air switch, is a commonly used low-voltage protection electrical appliance that can realize short circuit, overload and other functions. Ci...

The loss-of-voltage release of the automatic air switch of the power supply system is an electromagnet. At the moment of loss of power, the armature is released under the drive of the spring, and then the trip mechanism is driven, and the air switch completes the tripping operation. In the event of l...