Westinghouse WHFN321 Fusible Safety Disconnect Switch

The Westinghouse WHFN321 fusible Safety Disconnect Switch delivers reliable manual power isolation for three-phase industrial circuits at 30 A and 240 V. This heavy-duty, fusible switch is designed for panel or wall mounting in industrial power distribution systems, and is commonly used to isolate equipment during maintenance or to upgrade motor control centers, HVAC systems, conveyors, pumps, and processing machinery. Key specifications include a 30 A current rating, 240 V operation, 3-phase configuration, and a fusible, heavy-duty design for demanding commercial and industrial environments. The WHFN321 is the manufacturer part number; common replacements include Eaton DH321FGK, Square D H321N, and Siemens HF321N safety switches.