Scope of application 

SMGM1L series with residual current protection plastic shell circuit breaker (hereinafter referred to as circuit breakers), is the use of international advanced design, manufacturing technology research and development of one of the new circuit breaker. The rated insulation voltage of 800V, for AC 50Hz, rated voltage 400V, rated current up to 630A of the circuit for frequent conversion and the motor is not frequent use of starting. The circuit-breaker has overload, short-circuit and under-voltage protection to protect the line and power supply from damage, and to protect against long-term ground faults that may not be detectable by overcurrent protection.

Breaker in accordance with its rated limit short-circuit breaking capacity (Icu) level, divided into M-type (higher breaking type), H-type (high breaking type) class. The circuit breaker with small size, high breaking, short arc, anti-vibration and so on.

The circuit breaker can be vertical installation (ie vertical installation), can also be installed horizontally (ie, cross-loaded).

The circuit breaker can not be inverted into the line, that is only allowed 1,3,5 then the power cord, 2,4,6 then the load line. The circuit-breaker is suitable for isolation and the symbol is ""

This circuit breaker product performs the following standards:

IEC 60947-2 and GB14048.2 Low-voltage circuit-breakers and Annex B Circuit-breakers with residual current protection.

Model and meaning 

Structural features

Residual current protection Three-phase power: conventional with residual current protection circuit breaker leakage protection module working power sampling for the two-phase, the series circuit breaker for the three-phase, if the lack of any phase, circuit breaker leakage protection module function is still normal jobs.

Rated residual operating current I △ n and the rated residual current maximum operating time can be adjusted according to the actual situation.

When the phase voltage down to 85V, leakage protection module can still work; with leakage alarm output

The main technical parameters 

 Pic.1

Note: The maximum delay time can be customized according to customer requirements.

Release mode and accessories code

Pic.2

Note: 100M / 2300 can only install the alarm module can not install other accessories, 100L / 2300 and 225L / 2300 can not install accessories.

Product categories

According to the number of points: two poles, three poles, four poles

By use: power distribution, motor protection

According to the residual current breaking time: non-delay type, delay type

By operating mode points:

Pic.3

Appearance and installation dimensions(mm)

Pic.4

Pic.5

Product description

This series of circuit breakers are electronic current action type leakage protector. The main components are:

The main switch (including the over-current release), zero-sequence current transformer, electronic amplification parts, leakage trip, test equipment, all parts are installed in a plastic shell. When the protected circuit leakage or electric shock, the zero-sequence current transformer has a signal output, when the signal output reaches a certain value, it triggers SCR conduction, so that the leakage release action, which led the traction lever Operating machine

Structure in a very short period of time disconnected, cut off the power, in order to achieve leakage protection. (The working principle diagram is as follows).

Pic.6