ABB 1SVR730784R3300 is the CM-PSS.41S three-phase monitoring relay with two changeover contacts, designed to supervise a three-phase power supply and drive safety circuits in industrial controls. It accepts a 3x400 VAC supply on L1–L2–L3 and provides two Form C (changeover) outputs for interlocking and fault signaling. The device monitors three-phase voltages and is used to enable safe shutdown or signaling in safety-related applications, with configurable timing to tailor response to faults.
