NS系列塑料外壳式断路器
NS系列塑料外壳式断路器采用目前国内外最先进技术设计和生产。适用于交流690V，频率50-60Hz，额定电流12.5-630A的电力线路中用短路和过载保护之用。额定绝缘电压达690V,在正常情况下作不频繁的闭合或断开之用，也可作鼠笼式电动机的不频繁起动，运转中中断、过载以及在电动机，短路及欠电压时起保护之用。
NS series moulded case circuit breaker
NS series moulded case circuit breaker is one of the most advanced type breakers in the workd, which adopt international advanced design and manufacture technology. They are suitable for short circuit and overload protection for circuit of AC 690V, 50/60Hz, rated current from 12.5A to 630A. Its rated insulation voltage is 690V. It can make and break the non-frequently circuit in the normal conditions. It takes protect effect when mouse cage motors non-frequent start, breaking off working and protecting overload, short circuit and lacking voltage.
