Low-voltage switchgear and controlgear, Part 5.8: Control circuit devices and switching elements - Three-position enabling switches
低压开关设备和控制设备第5.8部分:控制电路装置和开关元件三位使能开关
Adopts IEC60947-5-2, Ed. 3.1 (2012) which applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects, ultrasonic proximity switches that sense the presence of sound reflecting objects, photoelectric proximity switches that sense the presence of objects and non-mechanical magnetic proximity switches that sense the presence of objects with a magnetic field.