Electrical Household Miniature Circuit Breaker Air Breaking Overload Protection

household miniature circuit breaker air breaking electrical short circuit and overload protection circuit breaker DZ47

Working principle of product

   A small circuit breaker is the principle that the bimetal bending is directed regularly with the increase of temperature. When the circuit breaker is closed in normal working condition, the internal bimetallic sheet is heated by a certain current, and the thermal expansion coefficient of the two bimetalles is different. It is not enough to release the release mechanism. When the line appears general overload, when the overload current is reached, the bimetallic sheet has a larger bending angle and a lever in the release mechanism, which is enough to push off the release mechanism, and from the small circuit breaker, it plays the role of super load protection. The size of the bimetallic strip is different from that of the small circuit breaker.

Product features

  1. band energy storage mechanism operation, contact close fast

  2. High  limiting coefficient

  3. advanced production process and beautiful appearance

Product specification

Brief introduction

   DZ47 circuit breaker adopts special arc extinguishing and current limiting system. It can quickly break down the fault current of DC distribution system and make the differential coordination greatly improved. The circuit breaker is especially aimed at accidents between the measuring and holding screen and the split screen in the power engineering DC system. The circuit breaker has excellent performance and can avoid the above failure. The differential coordination characteristics of circuit breakers are the best products at home and abroad.

Use of attention

  1. the circuit breaker needs to check contacts after the circuit is short circuited. If the main contact burns seriously or has pits, it needs to be repaired.

  2. the circuit breaker is broken due to the failure of the protection circuit (leakage, overload or short circuit), then the handle is in the release position (middle position). After finding out the cause of the failure, the operating handle should be pulled down (or placed in the "sub" position), and the operation mechanism can be closed after the operation (please pay attention to the different meanings of the three positions of the operating handle of the circuit breaker).

  3. if the circuit breaker can't be broken, it means that the circuit breaker or line is defective. It needs to be overhauled.

Company profile