Why Choose Kay Industries

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Phase converters are our only business. We are true specialists. We do not engage in any activity that would divert our attention from the serious business of helping our customers operate three-phase equipment from a single-phase source.


Kay Industries has always been an industry leader.

First with a rotary converter (1960)

First with packaged internal controls (1972)

First to offer a performance guarantee (1975)

First to offer an Independent Agency Approval Label (CSA 1979)

First to institute national toll-free phone lines (1980)

First to offer an extended product warranty (1986)


The Phasemaster 3-phase converter is without question the quietest rotary converter made. We have spent years perfecting the design to make certain that noise and vibration are kept to an absolute minimum. In fact, if you can find a quieter converter, ours is free.


The physical workmanship and appearance of the Phasemaster rotary 3-phase converter is so good that many people tell us it looks like it’s made for a hospital operating room instead of a factory floor. (Actually many Phasemaster rotary converters are used in medical clinics where they power X-ray machines and precision lasers for delicate ophthalmic surgery).


Phasemaster rotary 3-phase converters are built on the largest frames in the industry. That means more starting torque and more total horsepower capacity. Just compare the weight of the Phasemaster phase converter to any other make. We still believe you get what you pay for.