Westinghouse Electric JB3250NW Circuit Breaker

The Westinghouse JB3250NW Circuit Breaker is a 3-pole molded-case device rated for 250 A at 600 V AC, delivering overcurrent and short-circuit protection for three-phase power circuits in commercial and industrial distributions. It uses a thermal-magnetic trip mechanism and bolt-on panel mounting, making it suitable for panelboards, switchgear assemblies, motor control centers, and other distribution equipment requiring dependable fault interruption; installation is bolt-on panel mounting and it is used in commercial and industrial electrical systems. As part of Westinghouse's JB series, it provides branch-circuit and equipment protection, is compatible with panelboards and distribution systems, and supports replacement of aging protection devices, upgrades to power distribution infrastructure, and preventative maintenance in manufacturing facilities, commercial buildings, HVAC systems, and industrial automation environments. Common replacements include Square D KA36125.