Eaton / Westinghouse J3125 – 125A 3 Pole Molded Case Circuit Breaker Cheap

Built for commercial distribution, the Eaton J3125 is a 125A, 3-pole MCCB from the Series C J-Frame family. It provides reliable thermal-magnetic protection for heavy-duty electrical systems. This legacy breaker installs into older Westinghouse CDP and FDP panelboards, plus Eaton Pow-R-Line 3a and 4 enclosures. It serves as an exact drop-in replacement, eliminating the need for costly panel retrofits. Rated 22 kAIC at 480VAC, it features adjustable magnetic trip settings and is HACR rated.