China Earth Leakage Moulded Circuit Breakers

1. Application
SM2 series molded case circuit breaker (hereinafter called circuit breaker) is applicable circuit of AC 50Hz/60Hz, rated insulation voltage 750V, rated operating current up to 1250A, They are for distribution energy of electricity and infrequent making and circuit, in normal conditions. The rated current under 400A are provided with the function of the protection against overload and short circuit and under voltage.
2. Standard
SM2 series molded case circuit breaker complies with standard of IEC60947-4.
Features and Benefits
1. Earth leakage protection by associated Vigi Module
2. Compliance with international standards: IEC 60947-1 and 2
3. Breakers can be installed vertically or horizontally
4. The auxiliary device of SM3L is the same as SM3
CONDITIONS:
1. The altitude not exceeding 2000m;
2. The ambient temperature is from +40degree to - 5degree; And 24 hour cant't over 35degree;
3. Ambient enviornment freeing from explosive danger and air or dust which may cause corrosion of metal or weakness of insulation;
4. Ambient enviornment freeing from erosion of rain or snow;
5. Pollution degree 3;
6. Circuit instalation calss III.

Sensitivity,In(A)FixedAdjustAdjustDelay time 0.30.03-0.3-1-3-100.3-1-3-10-30Delay settings (ms)Fixed
< 40adjust
0 60(2) 150(2) 310(2)adjust
0 60 150 310Total breaking time (ms)< 40< 40 < 140 < 300 < 800< 40 < 140 < 300 < 800Rated voltage(V)AC50/60Hz200...440200...440-440...550200...440-440...550