EMERGENCY STOP MUSHROOM PUSHBUTTON, 22MM, ROUND, METAL, RED, 40MM, LATCHING, ROTATE-TO-UNLATCH MECHANISM, WITH YELLOW BACKING PLATE, INSCRIPTION: EMERGENCY STOP, WITH HOLDER, 1NC WITH INST. SUPERVISION, 1NC WITH INST. SUPERVISION, SPRING-LOADED TERMINAL !!! Phased-out product SIRIUS ACT 3SU1 is s Preferred successor type is >>3SU1050-1NB20-0AA0 + 3SU1400-1AA10-3HA0 + 3SU1900-0BC31-0AT0 + 3SU1550-