Scope of application of CYM1L:

CYM1L leakage molded case circuit breaker is suitable for circuits with AC 50Hz (or 60Hz), rated insulation voltage of 800V, rated working voltage of 400V, and rated working current up to 630A (800A) for infrequent switching and motor starting. Circuit breakers have overload, short circuit, and undervoltage protection functions, which can protect the circuit and power equipment from damage; At the same time, it can provide indirect contact protection for people and also provide protection against fire hazards caused by long-term grounding faults that can be detected by the overcurrent protection department. When other protective devices fail, the NAM1L residual current circuit breaker with a rated residual operating current of 30mA can directly provide additional protection. Circuit breakers are divided into two types based on their rated ultimate short-circuit breaking capacity: M-type (higher breaking capacity) and H-type (high breaking capacity four pole without H-type). This circuit breaker has the characteristics of small size, high breaking capacity, short flying fox, and anti vibration. Circuit breakers can be installed vertically or horizontally. Circuit breakers have the function of isolation
The (CYM1L) CM1L residual current circuit breaker complies with IEC60947-2, GB14048.2, and Appendix B for circuit breakers with residual current protection. The circuit breaker cannot be reversed, that is, only 1, 3, and 5 power lines are allowed to be connected; 2. 4. Connect 6 to the load line.

Structural features:

1. Structure
（CYM1L）CM1LLeakage circuit breakerElectronic current operated leakage protector. The main components include: main switch (including overcurrent release), zero sequence current transformer, electronic amplification component, leakage release, testing device, all of which are housed in a plastic casing.

2. Working principle,
When there is leakage or electric shock in the protected circuit, the zero sequence current transformer has a signal output. When the signal output reaches a certain value, it triggers the thyristor to conduct, causing the leakage release to act, thereby driving the traction rod and operating mechanism to disconnect in a short time, cutting off the power supply and achieving the leakage protection function

main features

Residual current three-phase protection: (CYM1L) CM1L residual current circuit breaker realizes ground fault protection. The working power sampling of conventional residual current protection modules with residual current protection circuit breakers is two-phase. This series of circuit breakers is three-phase. If any phase is missing, the residual current protection module of the circuit breaker can still work normally;
On site adjustable: The rated residual operating current and residual current operating time (non delay and delay) can be adjusted on site according to the actual situation; Low voltage protection: When the phase voltage drops to 50V, the dew point protection module can still work normally; Equipped with false alarm output function: When the residual current of the equipment or line reaches or exceeds the set value, the circuit breaker with leakage alarm unit module outputs a passive contact signal to drive the corresponding alarm device.