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1·The arc extinguishing principle of miniature circuit breaker in DC circuits was discussed.

讨论了小型交流断路器在直流电路中的灭弧原理。

2·The mechanism of low voltage miniature circuit breaker is very complicate, thus its assembly dimension chain and the tolerance of critical dimensions are researched.

由此，对微型断路器机构的装配尺寸链和关键尺寸公差进行了研究。

3·S260 series miniature circuit breaker (MCB), which is the new generation of MCB and pushed out by ABB. It's features, performances, specifications, and how to choose correctly were introduced.

S2 6 0系列微型断路器是ABB最新推出的新一代微型断路器，本文较为系统地介绍了其产品特点、性能指标和如何正确选用等。

4·Because bi metal element in miniature circuit breaker is easily affected by ambient temperature change, the protective characteristic of overload will be changed with ambient temperature change.

由于小型断路器的双金属元件易受环境温度变化的影响，其脱扣特性也将随之改变。

5·Based on analyzing assembly process characteristic of miniature military moulded case circuit breaker (MCCB), an assembly CAPP system for miniature military MCCB was developed.

在分析军用小型塑料外壳式断路器(MCCB)装配工艺特点的基础上，研究开发了军用小型MCCB装配CAPP系统。