Westinghouse LAB3350W Three Phase Circuit Breaker

The Westinghouse LAB3350W is a 3-pole molded case circuit breaker rated for 300 A, designed for bolt-on panel mounting in commercial and industrial switchgear and panelboards, providing robust protection for high‑capacity three‑phase power circuits. It delivers overcurrent and short‑circuit protection with a 600 V AC rating and a thermal-magnetic trip mechanism, ensuring quick response to faults and safe interruption of power to equipment. As part of the LAB series, this unit is commonly used in manufacturing facilities, commercial buildings, HVAC systems, and industrial automation power distribution to protect branch circuits and essential equipment. Installation is bolt‑on panel mounting, and it supports maintenance and upgrades by replacement of aging protection devices and preventative maintenance of power distribution infrastructure within switchgear, motor control centers, and industrial electrical panels.