Part of the Mark 75 family, the Eaton HFB3020 is a 3-pole, 20A molded case circuit breaker for commercial applications. This F-Frame device provides reliable long-time and instantaneous (LI) trip functions. The bolt-on MCCB installs into Eaton Pow-R-Line C panelboards and legacy Westinghouse switchboards. It is replaced by the newer HFD3020 model. With a high interrupting capacity of 65kA at 240V and 25kA at 480V, it handles significant fault currents. The unit is HACR rated.
Which panelboards are compatible with the HFB3020 circuit breaker?
This bolt-on F-frame breaker is designed for installation in Eaton Pow-R-Line C panelboards, legacy Westinghouse panelboards, and compatible switchboards.
Is the Eaton HFB3020 a direct replacement for older Westinghouse HFB3020 breakers?
Yes. Eaton acquired the Westinghouse electrical distribution division. The current Eaton and Cutler-Hammer HFB3020 models are direct replacements for legacy Westinghouse HFB3020 circuit breakers.
What does the Mark 75 designation indicate on this breaker?
Mark 75 is a legacy Westinghouse family classification for high-interrupting capacity circuit breakers. The HFB3020 carries this designation, delivering a 65kA interrupting rating at 240VAC and 25kA at 480VAC.
Can the HFB3020 be used in reverse feed applications?
Yes. Eaton F-frame thermal-magnetic circuit breakers are suitable for reverse feed applications. When back-feeding a panel, ensure you use the appropriate retaining bracket as required by the National Electrical Code.
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