Square D H325NR 400A 3P 240V Safety Switch, NEMA 3R, Fusible | AmpState

Engineered by Square D for reliability in daily electrical work, the H325NR is a rugged safety switch designed to disconnect and isolate equipment at the point of use. This three‑pole, 400 A, 240 V fusible safety switch delivers dependable protection for industrial circuits, making it a smart pick for maintenance teams, panel builders, and spare inventory where a direct part-number match matters.

• Three-pole, 400 A at 240 V — robust capacity to safely interrupt fault currents in demanding applications.
• NEMA 3R enclosure — designed for reliable outdoor use and rugged indoor environments, guarding components against weather and incidental contaminants.
• Fusible configuration — built to integrate with compatible fuses for effective overcurrent protection at the point of use.
• Direct part-number match — simplifies procurement, reduces downtime, and ensures compatibility with existing panels and documentation.
• AmpState availability — ready to ship, with support to help verify fit and compatibility for your system.

This safety switch is ideal for equipment disconnect and isolation in outdoor enclosures, service entrances, and industrial control panels where quick, reliable shutoff is critical during maintenance or in emergency scenarios. By choosing a true Square D part, you’re aligning with proven industry standards and a track record of compatibility across a wide range of panel builds and configurations.

How it helps in real-world scenarios: - Maintenance technicians perform safe shutdowns on outdoor machinery without exposing control gear to the elements. - Panel builders streamline spec-to-install processes by selecting a guaranteed direct part-number match. - Spare inventory controllers reduce downtime by stocking a widely compatible, field‑tested disconnect solution.

Need help matching a part number or confirming compatibility with your system? Message us and we’ll help you confirm fit.