New 3VT Series MCCB Made by Siemens

       He Youlin（Siemens Ltd.，China，Industry Sector，Industry Automation Division，Low-voltage

Controls & Distribution，Shanghai 200120，China）

Abstract The features and electronic release of new 3VT series molded case circuit breakers（MCCB）made by Siemens are emphatically introduced，and advantages of selectivity coordination of a variety of tripping characteristic curves are also presented . Meanwhile，the new 3VT modular accessories are described.

Key words Molded case circuit breaker Electronic release Selectivity

 

摘 要 重点介绍了西门子新3VT系列塑壳断路器的特点、电子脱扣器，以及灵活多样的脱扣特性曲线在选择性配合上的优势，描述了新3VT的模块化附件。