Powerswitch® industrial-grade AC manual motor controllers provide safe, reliable control of a variety of motor loads. Typical applications include manual ON/OFF switching control of conveyor systems, pumping machines, HVAC systems, air compressors and other heavy manufacturing equipment. These motor controllers are available for both single-phase and three-phase applications. All molded parts are thermoplastic to resist impact, chemicals, temperature, tracking and arcing Cam-driven mechanism enhances fast-make/slow-break Silver-alloy contacts for maximum conductivity and service life External clamps accept back and side wiring Insulating barrier between terminals provide isolation between phases