NLDM5HU Series High Voltage Circuit Breaker (hereinafter referred to as circuit breaker) is used in high voltage grid circuits with rated voltage of 800V1000V,1140V, rated operating current of 63A-800A, this circuit breaker has an overload and short-circuit transient protection function, which is used to distribute power and protect the lines and power supply equipments from the hazards of overload, short-circuit and other faults. 

Conforms to the standard. 

GB/T14048.1 « Low-voltage switchgear and controlgear Part 1: General Provisions» 

GB/T14048.2 « Low-voltage switchgear and controlgear Part 2: Circuit Breakers