normally open contact

基本解释

FS remote contact module with remote contact base, can be selected according to the actual needs of the terminal 1-2 (normally open) or 1-3 (normally closed contact).
触点模块附带遥信触点功能底座，可根据实际需要选用端子1-2（常开触点）或1-3（常闭触点）连接。
KTS 011:Thermostat(normally open), contact maker for regulating of filter fans and heat exchangers or for switching signal devised when temperature limit hasbeen exceed.
温控器（常开），当温度超出设定值时开关装置可以启动风机或信号装置。
The contact point is in a normally open state, namely, while the disc is closed, the contact point of the electric control device is closed, and in a power-on state, it sends out electric signals.
触点处于常开状态，即阀瓣关闭时，电控装置触点闭合，在通电状态下给出电信号。