Schneider Electric 8501LO-40 AC Magnetic Relay

The Schneider Electric Square D 8501LO-40 AC Magnetic Relay is a four-pole, NEMA-style control relay used to switch AC power in industrial control panels. It operates from a 110/120 V alternating-current coil (50/60 Hz) and provides four normally open contacts capable of carrying up to 10 A at up to 600 VAC, making it suitable for energizing motors, heaters, or valve actuators from a low-voltage control signal. The coil draws about 23 VA, and the contact material is Silver Cadmium Oxide for reliable switching performance. Part of the 8501 family, the LO-40 variant pairs this coil and contact arrangement in a compact package designed for robust industrial use.