These current transformers are designed for use in hvac equipment, relays and other 600V class systems and equipment. Diameters available start at 1.125-in. The units are encased in plastic or they can be cast in epoxy with or without mounting brackets.

ATC-Frost Magnetics Inc., 1130 Eighth Line, Oakville, Ontario, Canada, L6H 2R4; (905) 844-6681; fax (905) 844-6895.