Cutler-Hammer

Cutler-Hammer electrical distribution and control products serve commercial and industrial jobs, including replacement work on Westinghouse equipment. Eaton makes products under both names that can replace Westinghouse products. That’s a useful replacement path when you’re maintaining existing equipment.

Cutler-Hammer Manufacturing Co. was incorporated in 1893 by Harry Henderson Cutler and Edward West Hammer. The company specialized in electric starters, speed regulators and field rheostats. Cutler-Hammer became part of Eaton in 1978.

The Eaton connection

Eaton owns Cutler-Hammer and manufactures electrical distribution and control products under the name. Eaton’s Electrical Distribution and Control business was formerly known as Cutler-Hammer. That history explains why you encounter both names on electrical equipment.

Choosing a replacement

The Eaton and Cutler-Hammer replacement relationship with Westinghouse covers distribution and control products for commercial and industrial applications. Choose the replacement by the documented equipment match. Start with the existing device identification and panel label, then compare the replacement documentation against the circuit’s requirements.

For a Cutler-Hammer GFCI breaker, confirm the panel compatibility, electrical ratings, connection and required protection together.

Frequently Asked Questions

Are Eaton breakers compatible with Cutler-Hammer equipment?

Compatibility depends on the specific equipment you’re matching. Eaton owns Cutler-Hammer, but that relationship doesn’t make breakers under the two names interchangeable. A documented match matters more than the brand name.

Can you use Eaton breakers in a Cutler-Hammer panel?

You need to confirm the replacement is documented for your particular Cutler-Hammer panel. Start with the panel label, then check the replacement documentation against it and your circuit’s requirements.

Are Eaton and Cutler-Hammer breakers the same?

You can’t tell whether two breakers are the same from those names alone. Eaton manufactures electrical distribution and control products under both names, so different branding doesn’t settle the question either. Compare the specific device identification and documentation.

Are Eaton and Cutler-Hammer the same company?

Cutler-Hammer is part of Eaton, which acquired the company in 1978. You’ll still encounter the name because Eaton manufactures electrical distribution and control products under it.