Schneider Electric Square D 8502SEG1 AC Contactor

Schneider Electric Square D 8502SEG1 is a two-pole, NEMA 1 magnetic contactor from the Class 8502, Type S lineup, designed to switch AC loads in control circuits. The SEG1 variant uses a 120 VAC coil and is rated for up to 90 A on the load side when operated in 240 VAC service, configured as a full-voltage non-reversing contactor. This makes it a robust choice for switching heating elements, capacitors, and other inductive or resistive loads in HVAC controls, motor-start circuits (with appropriate accessories), and panel-mounted control applications. Class 8502 contactors support both resistive and inductive loads, and the Type S family emphasizes straightforward field replacement and compatibility with existing Square D/Schneider Electric panels. When selecting this device, verify the control voltage (120 VAC coil) matches your control circuit and ensure the line voltage and current requirements align with the 2-pole, non-reversing configuration. Enclosure and mounting conventions follow Square D norms, facilitating substitution for older 8502 units in compatible panels.