The Struthers-Dunn W388ACPSOX-72 is an electromechanical control relay. It is a single-phase control voltage rated device that is designed to provide reliable and cost-effective control of motors and other loads with single-phase power. This device is UL recognized and CSA certified, and it provides a maximum running amp rating at 250A, with locked-rotor amps up to 600A. It features an enhanced NEMA 4X enclosure constructed of corrosion-resistant aluminum, and it is designed to protect against dust, water, and grease. The W388ACPSOX-72 also features a two-piece complete enclosure insulation system, which houses the electronic circuitry, to provide additional protection and eliminate the need for a panel cover. This relay is suitable for all types of control applications, making it a versatile and dependable choice.