Square D VH323NRB 100A 3P 240V Safety Switch, NEMA 3R | AmpState

Meet the Square D VH323NRB 100A 3P 240V Safety Switch—the reliable, point-of-use disconnect you can trust for consistent equipment isolation. Built by Square D, this 3-pole safety switch is purpose‑built for maintenance teams, panel builders, and spare inventory where an exact part-number match matters. With a NEMA 3R rating, the VH323NRB is designed to provide dependable protection in a range of environments while simplifying field servicing and system upgrades.

Key Specifications at a Glance

• Manufacturer: Square D
• Part Number: VH323NRB
• Product Type: Safety Switch
• Amperage: 100 A
• Poles: 3
• Voltage: 240 V
• Enclosure Rating: NEMA 3R
• Availability: AmpState

What makes this safety switch stand out

• Direct part-number match: The VH323NRB is a precise, ready-to-install solution that streamlines procurement and reduces the risk of compatibility issues in both new builds and downtime recovery.
• Robust three-pole design: With 3 poles handling 100 A at 240 V, it delivers clean, reliable isolation for 3‑phase equipment with straightforward wiring and calibration.
• NEMA 3R-rated enclosure: Built to withstand a range of environments, this safety switch provides dependable performance where weather and contamination are considerations.
• Maintenance-friendly: Optimized for quick disconnects and safe maintenance workflows, helping crews lockout and service equipment with confidence.
• Inventory-ready availability: AmpState ensures this model is accessible for stock, repairs, and project needs, reducing lead times on critical replacements.

Ideal use cases and scenarios

• Equipment shutdown at the point of use for service or maintenance on 3‑phase machinery

• Panel-building projects that require a verified, exact-parts solution to meet design specs

• Spare inventory for facilities that rely on fast cross-reference and proven, field-tested parts

• Retrofit or upgrading legacy systems where a 3P 240V safety switch is the right fit for safety and code compliance

Why this matters for your operation

Choosing the VH323NRB means predictable performance and simplified procurement. Its 3-pole configuration ensures robust isolation for all three phases, while the 240 V rating matches a wide range of industrial equipment. The NEMA 3R enclosure adds a layer of environmental resilience, helping you maintain uptime in varied conditions. For teams focused on safety, reliability, and fast turnarounds, this switch is a pragmatic, long-term investment.

Compatibility and support

If you’re unsure about fit or cross-referencing, AmpState is ready to assist. We’ll help confirm compatibility and ensure you’re ordering the exact part number you need. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Practical installation and maintenance tips

• Verify that your load, wiring, and panel ratings align with 100 A, 3P, and 240 V specifications before installation.
• Follow lockout/tagout procedures during servicing to maximize safety for maintenance personnel.
• Inspect the NEMA 3R enclosure for any mounting or sealing needs if used in outdoor or damp environments; ensure connections are tight and compliant with local electrical codes.
• Keep a spare VH323NRB on hand in case of field servicing to minimize downtime and maintain system reliability.

With the Square D VH323NRB, you get a purpose-built safety switch that aligns with real-world needs—precise part matching, rugged NEMA 3R protection, and a practical footprint for maintenance, installation, and inventory planning. If you’re coordinating parts for a project or stocking for ongoing maintenance, this model delivers clarity, compatibility, and dependable performance.