Westinghouse JB3225 225A 600V 3-Pole Thermal Magnetic Circuit Breaker with Shunt Trip and Auxiliary Switch

The Westinghouse JB3225 is a robust 3-pole thermal magnetic circuit breaker designed for industrial and commercial electrical distribution systems. Rated at 225 amps continuous and 600 VAC, it provides reliable overcurrent protection with adjustable magnetic trip settings from 1125 to 2250 amps, making it suitable for applications requiring protection against short circuits and overloads. Key features include a shunt trip mechanism at 120 VAC for remote tripping, an auxiliary switch (1A-1B) for status indication, and a thermal-magnetic trip unit for dual protection. This model excels in panelboards, switchboards, and motor control centers, offering advantages like compact design, high interrupting capacity, and compatibility with legacy Westinghouse systems. Benefits include enhanced safety through visible blade (Saftvue) technology for status confirmation and durability in harsh environments up to 40°C. Drawbacks may include obsolescence, as Westinghouse breakers are now supported by Eaton, potentially requiring adapters for modern replacements. Compared to similar products like Eaton's Series C, it offers cost-effective retrofitting for older installations but may have lower interrupting ratings in high-fault scenarios. This unit is reconditioned, showing minor wear but fully functional based on visual inspection.