Eaton GHC3030S1 Three Phase Circuit Breaker

The Eaton GHC3030S1 is a three-pole circuit breaker built for three-phase power distribution. It is rated for 480Y/277 VAC and also provides DC voltage ratings of 125 VDC and 250 VDC, with a 120 V shunt included. This combination of AC and DC ratings enables a single protective device to address circuits that involve both AC power and DC controls in the same electrical panel. The model designation GHC3030S1 identifies this specific unit within Eaton’s GHC lineup, supporting precise ordering, replacement, or cross‑checking against other three‑pole devices. In use, this configuration interrupts three current paths in fault conditions, helping protect wiring and connected equipment in multi-wire circuits that rely on the stated voltage ratings.