The Westinghouse FD3150KLS Molded Case Switch is a 150 A, 600 V three‑pole manual disconnect in the FD Frame series, housed in a molded‑case enclosure for panel or switchboard mounting. It serves as a power distribution and equipment isolation device in industrial electrical systems, including motor control centers, switchgear, and industrial control panels operating on 50/60 Hz three‑phase power. Common replacements include Eaton FD3150KLS, Siemens HNF361RA, and Square D HU361DS.
