標準號：SIS SS EN 50 025-1989
中文標準名稱：工業用低壓成套開關設備和控制設備．電感式接近開關．表格C ，直流電， 3或4終端
英文標準名稱：Low-voltage switchgear and controlgear for industrial use — Inductive proximity switches — Form C, for direct current, 3 or 4 terminals
發布日期：1989/9/13 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This standard specifies only inductive proximity switches for direct current, in rectangular form, with a square cross-section, with 3 or 4 terminals for rated voltage not exceeding 48 V.These proximity switches are not embeddable in metal.Two types are included:With front sensing face: C21?1With upper sensing face: C21?2