The W389FXCXC-120A is a 3PDT power relay from the Magnecraft 389F series, designed for high-power switching. It operates with a 120 Vac coil and features silver alloy contacts rated for a thermal current of 20 A. The relay supports motor loads up to 0.5 hp at 120-240 Vac and has a maximum switching voltage of 300 V. Its plug-in cover style, high mechanical endurance, and ballast load ratings make it a reliable choice for lighting controls and industrial applications.