... to the motor power is AC380V).2,voltage specification for AC220V and AC380V,to control the motor secondary circuit ... voltage and decide .3,specification for 300A,400A,500A,600A and 800A protector .must ... N:5 ,didn’t indicate when the factory for N:5A EX 1:X-300/5/MTU(N ... +55°C,Storage temperature :-25°C~ +70°C, 2012 hot sales BW800-1 Motor protection device(economic modle)