Eaton's Cutler-Hammer HFD3100 U 3P electrical circuit breaker is a 3‑pole device designed to protect three‑phase power distribution. Rated for 100 A at 480 V, it interrupts excess current to safeguard connected equipment and wiring. The HFD3100 U designation identifies its configuration within the Cutler-Hammer line and it is intended for use in compatible 3‑phase electrical panels.
