Square D VH364NR 200A 3P 600V Safety Switch, NEMA 3R, Fusible | AmpState

Meet the Square D VH364NR — a purpose-built, fusible safety switch designed for reliable equipment disconnect and isolation at the point of use. With a rugged NEMA 3R rating, this 200 A, 3-pole switch is ready for outdoor and harsh environments, delivering dependable protection where downtime isn’t an option.

Key specifications

• Manufacturer: Square D
• Part Number: VH364NR
• Product Type: Safety Switch
• Amperage: 200 A
• Poles: 3
• Voltage: 600 V
• Enclosure: NEMA 3R
• Fusible: Yes

Why this model stands out

• Point-of-use isolation: Designed to safely disconnect equipment exactly where it’s used, reducing risk during maintenance and repairs.
• Outdoor readiness: NEMA 3R protection means you can install it outdoors or in damp environments without compromising safety.
• Fusible protection: Integrated fuse capability provides overcurrent protection aligned with your system’s protection scheme, helping to coordinate with upstream breakers and reduce arc-flash exposure.
• BOM alignment: Ideal for replacement projects or spare stocking to keep your bill of materials aligned to the original part number, minimizing rework and mismatches.
• Trustworthy brand: Square D’s legacy in industrial electrical protection ensures compatibility with a wide range of panels and equipment.

Ideal use cases

• Replacement of damaged or obsolete disconnects in industrial facilities, warehouses, and manufacturing lines
• Outdoor equipment feeds such as pumps, fans, and motors where reliable isolation is essential
• Spare stock for preventive maintenance programs to shorten downtime during fuse or switch failures
• System upgrades that require maintaining the original part number for BOM consistency

Compatibility and support

Available from AmpState, the VH364NR is straightforward to source for projects that require precise part matching. If you’re unsure about fit, AmpState offers guidance to confirm compatibility and ensure a seamless replacement that preserves your electrical protection scheme. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Practical tips for installation and care

• Verify the enclosure mounting pattern and wiring terminals match your existing setup to avoid rework during replacement.
• Keep spare fusible elements on hand and document fuse ratings to maintain consistent protection levels.
• Schedule periodic inspections of the switch mechanism and conductors to ensure reliable operation in outdoor conditions.
• When replacing, coordinate with your upstream protection devices to preserve proper protection coordination and selectivity.