NS circuit breakers

NScircuit breakers 1 , ZQM8(NS) series moulded case circuit breakers is a new type products developed by our company . the design of this kind breaker reflects the new current limiting principle and manufacture technology .it's compact in structure , full modular , high breakin , zero flash over and so on characteristics . the breaker of rated insulated voltage 750V is suitable for 50Hz , rated working volatge within 600V and rated working currenr up to 630A for infrequently switching and starting motor ,the breaker is provided with overload ,shot circuit,and undertand voltage protective device can protect the line and power supply equipment from damage 2 , in accordance with the ultimate short circuit breaking capacity(ICU) classified into four types :N(standard),TYpe H(higher) ,Ltype(current limiting) 3 , this breaker can be installed in vertical(upright),or horizontal mode. this breaker can be inversed incomeing line . i.e. only can 1,3,5 connect with power supply line. 2,4,6 connect with load terminal . 4 , the breaker complies with the following standards : IEC60947-1and GB/T14048.1,Geberal , IEC60947-2 and GB/T14048.2 low voltage circuit breakers . IEC60947-4 and GB/T14048.4 contactor and motor starter ,IEC60947-5.1 and GB/T14048.5 Electrical equipment of electronical control circuit .