Westinghouse HFN364 - 200A, 3-Pole, Fused Safety Switch

The Westinghouse HFN364 stands as a robust solution for industrial and commercial environments where safe electrical isolation is non-negotiable. This 200A, 3-pole fused safety switch is engineered to deliver reliable, on-demand disconnection under load, supporting maintenance and service activities with confidence.

• 200 Amp, 3-Pole design — ideal for three-phase systems that demand solid current handling and dependable isolation across demanding equipment.
• Fused protection — built-in fusing provides immediate current interruption, helping protect downstream devices and wiring during fault or overload conditions.
• Safe electrical isolation — delivers clean, reliable disconnection to enable safe servicing, troubleshooting, and routine lockout/tagout procedures.
• Lockout/Tagout readiness — designed to align with standard safety practices, making it straightforward to secure equipment during maintenance without compromising safety.
• Durable, long-term performance — rugged construction suited for busy industrial settings, delivering consistent operation and reduced downtime over time.

Who benefits most: maintenance teams, facilities engineers, and plant managers responsible for protecting personnel and equipment in manufacturing floors, HVAC systems, pump stations, and other three-phase power applications. When reliability and quick, controlled isolation matter, the Westinghouse HFN364 provides a clear, practical advantage over non-fused or less robust disconnects.

How it works in practice

In everyday use, this fused safety switch sits at the main service disconnect or at point-of-use where equipment needs to be isolated for servicing. Fusing ensures overcurrent protection while the three-pole design ensures all phases can be safely opened, reducing the risk of arc flash and accidental energization during maintenance. Its compatibility with lockout/tagout procedures means teams can confidently padlock the switch in the OFF position while work is performed.

Key specifications

• Amperage rating: 200A
• Number of poles: 3-Pole
• Product type: Fused Safety Switch
• Brand: Westinghouse
• Model: HFN364