断路器的保护功能是由脱扣器实现的，传统的脱扣器多为电磁式的，其特性不易控制。
The releaser executes the function of breaker. The traditional releases always are electromagnetic and it is not easy to control their trait.
断路器的保护功能是由脱扣器实现的，传统的脱扣器多为电磁式的，其特性不易控制。
The releaser executes the function of breaker. The traditional releases always are electromagnetic and it is not easy to control their trait.
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