ZN12-40.5系列户内高压断路器是三相交流50HZ，额定电压为40.5KV的户内装置，产品分为固定式和手车式两种。固定式装置是配置在XGN17-40.5箱式固定式高压开关柜中使用；手车式可配置在JYN1-40.5或GBC-40.5移开式金属封闭高压开关柜使用，也可配置在KYN10-40.5组装式（焊接式）金属封闭开关柜中使用。本系列产品技术参数高，开断能力强，动作可靠，性能稳定，寿命长，维护简便，且无爆炸危险及污染，供工矿企业，发电厂及变电站作单母线系统电气设施的保护和控制之用，并使用于频繁操作的场所，也可用于切合电容器组等特殊场所。GENERALmodel ZN12-40.5 Vacuum Circuit Breker is a three-phase 50HZ indoor high voltage switchgear with 40.5KV rated voltage. It's suitable for use in power transmission and distribution system,such as power plants, city electric network and substations for control and protection,especialy at she places of breaking important load and frequent operations.结构特点        本断路器采用机构与开关一体的设计，结构简单，开断能力强，寿命长，操作功能齐全，易于维修。DESIGN FEATURES     The circuit breaker is designed with its mechanism and switching device being one integral,with the features of simple structrue,strong breaking capacity,long life,complete operating functions and easy maintenance.技术参数 TECHNICAL DATA型号Model 参数 parameter   ZN12-40.5/1600-25   ZN12-40.5/2000-31.5额定电压 Rated voltage(KV) 40.5   40.5额定电流 Rated current(A)  1250,1600    2000,2500额定短路开断电流(A)Rated short-circuit breaking current  25    31.5 机械寿命(次)  Mechanicl life (time)    10000