Overview

The BZM1L (CM1L) series plastic case circuit breaker with residual current protection (hereinafter referred to as the circuit breaker) is one of the new circuit breakers developed by our company using international advanced design and manufacturing technology. Its rated insulation voltage is 800V, suitable for infrequent conversion and infrequent motor starting in circuits with AC 50Hz, rated operating voltage 400V, and rated operating current up to 630A. The circuit breaker has overload, short circuit and under-voltage protection functions, which can protect lines and power equipment from damage. It can also provide protection against fire hazards caused by long-term ground faults that cannot be detected by over-current protection.

Circuit breakers are divided into M type (higher breaking type) and H type (high breaking type) according to their rated limit short circuit breaking capacity (Icu). This circuit breaker has the characteristics of small size, high breaking capacity, short arcing, and anti-vibration.

BZM1L (CM1L) series leakage circuit breaker is one of the new leakage circuit breaker products designed and developed by our company using advanced technology. It is suitable for circuits with AC 50HZ, rated voltage 400V, and rated current 16A to 800A.

Its main function is to provide indirect contact protection against fatal electric shock. A leakage circuit breaker with a rated residual operating current not exceeding 0.03A can also be used as a direct contact failure protection when other protections fail, but it cannot be used as the only failure protection. At the same time, it can also be used to prevent electrical fires caused by contact with fault current, and can be used to protect lines from overload and short circuit, and can also be used for infrequent switching of lines.

This leakage circuit has the characteristics of small size, high breaking, short flying fox and residual operating current, and the residual current action can be adjusted. It can also be equipped with alarm contacts, rotating handles, operating mechanisms, shunt releases, auxiliary contacts, and electric operation. Mechanism and other accessories, and can adopt various wiring methods such as front-board, behind-board, plug-in, etc. It is an ideal product for users.

The leakage circuit breaker can be installed vertically or horizontally.

Usage environment

 ◆Altitude below 2000m;

 ◆The ambient medium temperature shall not be higher than +40℃ (+45℃ for marine products) and not lower than -5℃;

 ◆Can withstand the influence of humid air;

 ◆Can withstand the influence of salt spray and oil mist;

 ◆Can tolerate the influence of mold;

 ◆Can withstand the effects of nuclear radiation;

 ◆The maximum inclination is 22.5℃;

 ◆In a medium with no explosion hazard, and where the medium does not contain gas or conductive dust that is sufficient to corrode metal and destroy insulation;

 ◆In places where there is no rain or snow;