Use and scope of application

NMCM1L series residual current circuit breaker (hereinafter referred to as circuit breaker) is mainly used in AC 50Hz, rated voltage 400V, rated current to 800A distribution network, used to provide indirect contact protection for people, and can also be used to prevent insulation damage of sleepy equipment. The fire hazard caused by the ground fault current can be used to distribute electrical energy and protect the overload and short circuit of the line and power equipment. It can also be used for infrequent switching of the line and infrequent starting of the motor. The leakage current protection module with residual current protection circuit breaker is sampled as two-phase. The series of circuit breakers are three-phase. If any phase is missing, the circuit breaker leakage protection module can still work normally; the rated residual operating current IAn and maximum The disconnection time is adjustable according to the actual situation; when the root voltage drops to 50V, the leakage protection module still works normally; it has the leakage alarm output function.

Product sign: IEC60947-2, GB14048.2 standard.

The meaning of the model is the same as NMCM1, as long as the last part of the model is added: 1 (ie alarm and trip) or 1 (alarm does not trip)

Normal working conditions

1. The upper limit of ambient air temperature does not exceed +40 ° C; not less than -5 ° C; the average value within 24 h does not exceed +35 ° C; Note; when the ambient air temperature is higher than +40 ° C or lower than -5 ° C Circuit breakers not used under the conditions shall be negotiated with the manufacturer;

2. The altitude of the installation site does not exceed 2000m;

3. The relative humidity of the atmosphere does not exceed 50% at the highest temperature around +40 °C; it can have a relatively high temperature at a lower temperature (for example, 90% at 200 °C), and considers the product where temperature changes occur. Condensation of the surface;

4, installation conditions: generally should be installed vertically, horizontal installation (horizontal installation);

5, installation category: circuit breaker main circuit I1 class, control circuit and auxiliary circuit for 11 categories

6, pollution level: 3;

7. External magnetic field: The external magnetic field near the installation site does not exceed 5 times the geomagnetic field in any direction.

Main accessory parameter list

The main technical parameters

Shape and installation dimensions

Accessories and accessories