SIRIUS SAFETY RELAY SAFETY-RELATED SPEED MONITORING, 110 - 240 V AC/DC, 45.0 MM, SPRING-LOADED TERMINAL, RC INSTANTANEOUS: 2NO, RC DELAYED. 0, SC: 2 ELECTRICAL, AUTOSTART / MANUAL START, BASIC UNIT, MAX. ACH. PL EN13849-1: E, MAX. ACH. SIL TO IEC61508:3,