Westinghouse HQNPA3090 Molded Case Circuit Breaker

The Westinghouse HQNPA3090 Molded Case Circuit Breaker is a three-pole, 90 Amp device designed for overcurrent and short-circuit protection in commercial and industrial electrical distribution, enabling safe interruption of fault currents in three‑phase power circuits. Rated for 240 V AC, it is commonly installed in panelboards, switchgear assemblies, HVAC systems, lighting distribution panels, and motor control applications to protect branch circuits and equipment. With a thermal-magnetic trip, the HQNPA series is intended for panel-mounted installation in commercial and industrial protection systems, and serves as a compatible replacement option for failed protection devices and system upgrades; common replacements include Eaton HQNPA3090, Cutler-Hammer HQNPA3090, and Westinghouse HQP3090.