Westinghouse FB3040V Molded Case Circuit Breaker

The Westinghouse FB3040V Bolt-On Molded Case Circuit Breaker is a 40A, 600V three‑pole device designed for industrial electrical distribution and branch‑circuit protection. As a molded‑case breaker in the Westinghouse FB frame, it delivers thermal‑magnetic overcurrent and short‑circuit protection for 3‑phase systems operating at 50/60 Hz and is intended for bolt‑on panel mounting in motor control centers, switchboards, and industrial automation panels. This unit supports replacement, retrofit upgrades, and maintenance of existing infrastructure, providing secure, panel‑mounted protection for medium‑amperage circuits and connected equipment. Common applications include motor control systems, conveyors, HVAC infrastructure, automation machinery, and other electrical distribution panels in industrial and commercial settings. Key specifications: Brand Westinghouse; Part Number FB3040V; Product Type Bolt-On Molded Case Circuit Breaker; Current Rating 40 Amp; Voltage Rating 600 Volt; Number of Poles 3; Phase Compatibility 3 Phase; Mounting Type Bolt-On; Breaker Series FB Frame; Protection Type Thermal Magnetic; Frequency Rating 50/60 Hz; Common Replacements Eaton FB3040V, Siemens HFB3040, Square D FA3440.