Westinghouse FDP325R - 400A, Fused Safety Switch

The Westinghouse FDP325R is a 400A fused safety switch designed to deliver dependable electrical isolation in demanding industrial and commercial environments. Built to support robust lockout/tagout procedures, it provides a clearly visible, safe path to disconnect power and protect crews during maintenance and service work.

Key to its value is the ability to reliably interrupt and isolate circuits, including disconnection under load. This means maintenance teams can work with confidence, knowing the switch offers positive isolation when it’s most critical, while reducing the risk of unexpected re-energization and downtime.

Engineered for long-term durability, the FDP325R stands up to daily use in demanding settings—factories, warehouses, data centers, and large facilities where dependable isolation is essential for safety and compliance. The fusion of Westinghouse reliability with practical, field-proven design makes it a trusted choice for critical service feeders and safety-sensitive applications.

What makes the FDP325R stand out

• 400A amperage rating tailored for medium-to-large electrical feeds and service disconnects
• Fused safety switch provides inherent overcurrent protection alongside isolation capabilities
• Lockout/tagout (LOTO) compatibility supports safe maintenance practices and regulatory compliance
• Disconnection under load ensures controlled power removal even when circuits are energized
• Rugged, industrial-grade construction designed for continuous operation in harsh environments
• Westinghouse reliability backed by a proven track record and model FDP325R designation

Ideal applications

• Manufacturing lines and process feeders requiring safe, scheduled maintenance
• Commercial facilities with large electrical distribution needs
• Electrical rooms and service panels where clear isolation points are essential
• HVAC and large equipment service where lockout/tagout procedures are standard practice
• Data centers and critical load environments that demand dependable disconnection under load

Practical guidance for use

Integrate the FDP325R into your safety program to reinforce clear isolation during maintenance. Pair it with a documented lockout/tagout procedure, verify non‑energization before work, and ensure that only authorized personnel apply or remove locks. Regular inspection of fuses and terminations helps maintain peak performance and reliability over time.

With the Westinghouse FDP325R, you’re selecting a purpose-built solution that prioritizes safety, reliability, and straightforward maintenance in the most demanding electrical environments.