表示弹簧复位（断开）。可指定电路为断开或接通。

Represents a spring return (break). Circuit can be specified as open or closed.

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直接启动、弹簧复位、正常闭合的邻近限制开关。右击接通或保持断开。

Proximity limit switch, directly actuated, spring returned, normally closed. Right-click for closed or held open.

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接通电源前，应确保开关处于断开位置。

Make sure switch is OFF before turning on power.

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