Westinghouse Electric NB31200WK Molded Case Switch

The Westinghouse NB31200WK Molded Case Switch is a 3-pole, 1200 A, 600 V high-current disconnect built for industrial power distribution. With a fixed-mount, non-automatic molded case design, it delivers dependable three‑phase isolation in switchgear assemblies, distribution panels, motor control centers, and large manufacturing equipment. Its 30 kA interrupt rating and 50/60 Hz operation suit heavy‑duty applications in manufacturing facilities, industrial automation systems, HVAC equipment, and other power‑distribution environments where reliable high-current switching is critical. Maintenance teams and system integrators use the NB31200WK for replacement, retrofit projects, preventive maintenance, and major electrical system upgrades, and it features mechanical lug connections for secure terminations.