海立EDR系列安全行程开关手动覆归选型手册（英文）pdf,海立EDR系列安全行程开关手动覆归选型手册（英文）EDR SERIES SAFETY LIMIT SWITCH WITH RESET Positive Opening Mechanism 1NC/1NO Contact (Slow action) Only the Nc contacts have a positive opening function Fixed contact (NC) When metal deposition oc