JM8(NS,current breaker,time breaker) 630A series Mouded case circuit breaker is one new type breakers which this company adopts international advanced design,manufacture technology to develop,the rated insulating voltage is 750V,suitable for AC 50Hz(60Hz),rated working voltage 690V or below,rated working current is 12.5 to 1250Aof circuit and use in distributing electric energy.Non frequent making and breaking in the normal conditions and protecting when circuit and installation are overload ,shortcircuit nad under voltage .Rated shell-rack and the breaker which current is under 400A,take protect effect when mousecage motor is non frequent start, breaking off working and protecting overload,short circuit and under voltge.

Type and meaning

   Due to the short of funtion of the allibaba's editing board ,the type and meanings of our products 

will be showed by taking one type for example. E.g: JM8-100 D/3 

"J"   ---JY Capacity & Electric Co.Ltd 

"M"  ---moulded case circuit breaker 

"1"   --- design code .

"100" ---Rated current of frame,100 represents the rated current 100A.Another classifications  

        of  160,250,400,630.

"D"  --- breaking capacity grade of rated limiting short-circuit. Another 

       two grades ,N ,H and L. 

"3"  ---pole number 3.Another two poles ,2 and 4. 

Main technical specifications