Westinghouse Electric Corporation KB3250F Breaker Frame

The Westinghouse KB3250F Breaker Frame is a 3-pole, 225 Amp KB-series molded‑case breaker frame designed to house interchangeable trip units for overcurrent and short‑circuit protection of high‑capacity three‑phase power circuits in industrial and commercial electrical distribution systems. It is commonly installed in switchgear assemblies, panelboards, motor control centers, and industrial electrical panels where dependable frame integrity and modular protection configurations are required, and it supports replacement of damaged housings or breaker rebuilds. Configuration is frame only—no trip unit included—with a fixed panel‑mount installation and a 600 V AC rating compatible with KB series breakers. Applications span manufacturing facilities, commercial buildings, HVAC systems, and industrial automation equipment that rely on reliable high‑capacity protection and modular trip unit integration. Common replacements include Eaton KB3250F, Cutler-Hammer KB3250F, and Square D KA36250.