Square D by Schneider Electric 8501XO40XLV01 AC Latching Control Relay

Square D by Schneider Electric 8501XO40XLV01 AC Latching Control Relay is a Class 8501 Type X, four‑pole NEMA‑style relay with a mechanical latch that holds all contacts in their last state after the control voltage is removed. This XO40XLV01 variant provides four normally open convertible contacts and is rated for up to 10 A at up to 600 V AC, making it suitable for mid‑ to high‑load control applications such as self‑checking safety circuits, automatic transfer lines, and sequencing networks. The coil operates at 24 V AC, 60 Hz, enabling a reliable latching action without continuous energization, and the unit is designed to integrate with Schneider Electric’s 8501 master cartridges within the XL latch family for modular expansion. By combining a robust latching mechanism with standard 8501 contact cartridges, this relay supports state retention where a maintained contact state is required after a short control pulse while delivering dependable AC performance across common industrial voltages.