Eaton / Cutler-Hammer HFD1080 Molded Case Circuit Breaker

This F-frame breaker is designed for bolt-on installation in Eaton Series C panelboards, switchboards, and motor control centers. It will not fit standard residential plug-on load centers.

Yes. Eaton F-frame thermal magnetic circuit breakers, including the HFD1080, are suitable for reverse feed applications. Always verify that no voltage is present before servicing reverse-fed equipment.

Yes, this breaker is rated for 125VDC with a 10kAIC interrupting capacity. Note that for DC applications, the magnetic trip levels are approximately 40 percent higher than the standard AC ratings.

For new installations or panel upgrades, Eaton recommends the Power Defense PDG21M0080TFFJ as the modern equivalent to this legacy Series C breaker.

The HFD1080 is the high-interrupting capacity version of the standard FD1080. While both are 80A, 1-pole F-frame breakers, the HFD model provides a higher short-circuit interrupting rating (100kAIC at 240VAC) for systems with higher available fault currents.

The factory-installed load lugs accept 14 AWG to 1/0 AWG copper or aluminum wire. When terminating, ensure the conductors are appropriately sized for the 80A continuous current rating per NEC guidelines.

Yes, all Eaton F-frame circuit breakers carry an HACR rating. This makes the HFD1080 suitable for protecting heating, air conditioning, and refrigeration equipment circuits.

No, this breaker features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous (LI) protection without adjustable dials.