ABB 1SVR730824R9300 Safety Relay

ABB 1SVR730824R9300 is a CM-PFS.S three-phase monitoring relay with two changeover contacts (2c/o) designed for use with a 3x200–500 V AC power supply at 50/60 Hz. It features screw-terminal connections for robust wiring and provides two Form C contacts to independently switch safety or control circuits in response to phase faults or sequence issues. The unit is explicitly rated for measuring voltage across L1–L2–L3 in a 3-phase system and is intended to detect phase loss or incorrect phase sequence to protect downstream equipment such as motors or conveyors by switching outputs accordingly. Its official order code is 1SVR730824R9300, and it is listed among ABB’s CM-PFS.S family of phase/voltage monitoring relays. Typical applications include monitoring three-phase power to ensure all phases are present and correctly sequenced, enabling prompt isolation of equipment when faults are detected to maintain process safety and equipment integrity.