Grizzly H3742 Phase Converter 40 HP Rotary New

The Grizzly H3742 is a 40 HP rotary phase converter designed to run 3-phase machinery from a single-phase power source. It delivers full motor power with up to 95% electrical efficiency, making it a practical solution for shops that want to use industrial equipment without dedicated 3-phase service.

Built for cool, quiet operation, this converter features a drip-proof cast-iron casing and identical input and output voltages. It can handle single or multiple loads and is suited for demanding equipment such as lathes, compressors, dust collectors, and other hard-start or heavily loaded machines.

This unit is a strong fit for professional workshops, fabrication spaces, and serious industrial users who need reliable 3-phase performance from existing single-phase power. It is also stackable for higher horsepower requirements when expanded capacity is needed.