Square D 8910MO-4 Contactor

Square D 8910MO-4 Contactor is a four-pole definite-purpose control device from Square D (Schneider Electric) that uses a 120 V AC coil to switch a 240 V AC load. This MO-4 model sits in the 8910 Definite Purpose Contactor family and is designed for panel-mounted control circuits in commercial and light industrial environments, where a standard 120 VAC control signal must reliably actuate four main contacts. The four-pole configuration allows four lines to be switched together in a single operation, reducing wiring complexity in motor, pump, or other 240 VAC equipment control schemes. This device is commonly employed in applications such as HVAC equipment, fans, and pumps, providing dependable isolation and switching from control circuits while aligning with typical Square D/Schneider Electric control-system architectures.>