CM1系列塑料外壳式断路器其额定绝缘电压为800V(CM1-63为500V)，适用于交流50HZ，额定工作电压690V及以下(CM1-63为400V)，额定工作电流至800A的电路中作不频繁转换及电动机不频繁起动之用。断路器具有过载、短路和欠电压保护功能，能保护线路和电源设备不受损坏。断路器按照其额定极限短路分断能力(Icu)的高低，分为C型(基本型)、L型(标准型)、M型(较高分断型)、H型(高分断型)四类。断路器可垂直安装，亦可水平安装。该断路器具有体积小、高分断、短飞弧(部分规格为零飞弧)、带隔离、抗震动等特点，并通过了核工业条件(1E级)试验和船舶条件的试验，是国产产品中***能用于核工业基地的产品，更是陆地及船舶使用的理想产品CM1-400L/3300,CM1-400L/3310,CM1-400L/3320,CM1-400L/3330,CM1-400L/3340,CM1-400L/3350,CM1-400L/3360,CM1-400L/3370,CM1-400L/33002CM1-400M/3300,CM1-400M/3310,CM1-400M/3320,CM1-400M/3330,CM1-400M/3340,CM1-400M/3350,CM1-400M/3360,CM1-400M/3370,CM1-400M/33002CM1-400M/4300,CM1-400M/4310,CM1-400M/4320,CM1-400M/4330,CM1-400M/4340,CM1-400M/4350,CM1-400M/4360,CM1-400M/4370,CM1-400H/3300,CM1-400H/3310,CM1-400H/3320,CM1-400H/3330,CM1-400H/3340,CM1-400H/3350,CM1-400H/3360,CM1-400H/3370CM1-400H/4300,CM1-400H/4310,CM1-400H/4320,CM1-400H/4330,CM1-400H/4340,CM1-400H/4350,CM1-400H/4360,CM1-400H/4370)