低压塑壳断路器技术在城网改造中的应用

近二十年来，低压塑壳断路器技术有了飞速发展，新型断路器的先进技术和优良的性能为城网改造的低压部分提供强有力的支持。本文根据城网低压塑壳断路器的选用准则，阐述几个关键技术的发展与应用，并且以实例剖析城网低压配电方案的优缺点。

Application of Low-Votage MCCB Technology in City Network Transform

In last twenty years,low-voltage MCCB technology has fast developed.Advanced technology and excellent performance of new circuit breakers supply low-voltage parts of city network support.The paper expounds several key technologies for development and application according to selection criterion of low-voltage MCCB of city network,and analyses advantages and disadvantages of city network low-voltage distributing scheme for example.