Schneider Electric Square D 8501XO40 AC Control Relay

Schneider Electric's Square D 8501XO40 AC Control Relay is a NEMA‑style Type X relay with four normally open contacts (4 NO), designed for machine‑tool control circuits and other general‑purpose automation panels. It provides reliable switching for resistive loads up to 10 A at 600 VAC, enabling multiple circuits to be controlled from a single coil. The 8501XO40 family is offered in several coil configurations to suit different control voltages: a 24 VAC coil (8501XO40V01), 110/120 VAC variants (including 8501XO40XLV02), and a 220/240 VAC coil option (8501XO40XTE1V03), with 50/60 Hz operation depending on the specific coil. When energised, the four normally open contacts close to energise up to four independent circuits or a common multi‑load, making it suitable for compact control panels and machine‑tool applications where straightforward, robust relay actuation is required.