Westinghouse HFN365 Disconnect Switch, 400A, 3-Pole, 600V

The Westinghouse HFN365 disconnect switch delivers reliable, high-capacity isolation for industrial electrical service, maintenance, and replacement projects. Built to handle demanding environments, this 400 A, 3-pole unit is designed to safely interrupt three-phase power up to 600 V, giving you a dependable solution for everyday shutdowns and critical maintenance windows.

Key specifications at a glance

• Amperage: 400 A
• Poles: 3-pole design for full three-phase isolation
• Voltage rating: 600 V
• Manufacturer: Westinghouse
• Part number for compatibility: HFN365

Why this disconnect switch stands out

• Designed for industrial service environments where quick, safe isolation is essential during maintenance or equipment replacement.
• Three-pole construction ensures complete disconnection of three-phase circuits, reducing the risk of accidental energization during service work.
• 600 V rating aligns with common industrial power distributions, providing versatility across a range of applications from manufacturing lines to utility-style panels.
• Part-number-guided compatibility helps you verify fit quickly—use HFN365 as the definitive reference for your application requirements.

Ideal use cases and practical scenarios

• Maintenance windows on machinery powered by three-phase systems up to 600 V, where reliable isolation is essential for technician safety.
• Replacement of aging disconnects in plant service entrances, control rooms, and equipment bays where a robust, standard-part solution is preferred.
• New installations in facilities that require a proven, OEM-backed disconnect switch with clear part-number traceability for procurement and service records.

How this solution supports your operations

• Minimizes downtime by delivering fast, dependable isolation when technicians need to service or replace equipment.
• Reduces compatibility uncertainties with a clearly identifiable part number (HFN365) and straightforward arming/disarming behavior for routine maintenance.
• Supports long-term reliability in demanding environments, backed by Westinghouse engineering and manufacturing expertise.

If you need help matching a part number or confirming compatibility with your specific application requirements, send us a message and we’ll assist you in validating fit for your system.