详细叙述了漏电开关零序电流互感器及其铁芯，脱扣器的工作特性、材料选用。
The properties and selection of the zero-phase sequence current transformer core and tripper for GFCI are in detail described.
永磁式漏电保护断路器的核心部件就是永磁式脱扣器，它能否在产品要求的漏电流范围内产生一致性动作，这就决定产品质量的好坏。
The key part of permanent magnetic leak electricity protective breaker is a permanent magnetic electrical apparatus release, which directly decides the product quality.
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