Internal Accessories of the s (h) Z Intelligent Type Breaker, such as Under voltage trip, Shunt trip, Auxiliary contacts and Alarming contacts etc.

智能型断路器的欠压脱扣、分励脱扣、辅助触头等内部附件，如表b 1所示。

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Under the voltage of 35% ~ 70% of the rated voltage, the under-voltage release should make the breaker trip correctly.

在额定控制电源电压的35%～70%时，欠电压脱扣器应可靠使断路器脱扣；

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Through the analysis and discussion of fastening intensity of trip bolt used in low voltage apparatus, the design data about screw join is calculated.

对低压电器螺钉连接的强度进行了理论分析和探讨，得出了螺钉连接的可靠性设计数据；

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