GDM20L series residual current operated circuit breaker is suitable for AC 50Hz rated working voltage 380V and below, its rated current to 630A power supply neutral point directly grounded in the power supply system. For the purpose of electric leakage protection, it can also be used to prevent fire hazard caused by grounding fault current caused by equipment insulation damage. It can also be used to distribute electric energy and protect lines and power equipment from overload and short circuit. The circuit breakers can also be used in lines infrequent conversion, with the letter "G" signifying the breaker has a transparent frame.

Comply with the IEC60947-2、GB/T 14048.2 Standard

Frame Size：160、250、630

Current Grade：50-160A、100-250A、400-630A

Shor Circuit Breaking Capacity：Icu=12、15、20 kA；

Poles：3、3P+N