Square D HU364RB - 200A, 600V, 3-Phase, Safety Switch, NEMA 3R

Engineered for reliability in demanding industrial and commercial environments, the Square D HU364RB safety switch delivers dependable on/off isolation and precise overcurrent protection for three‑phase systems. With a 200A rating, 600V capability, and a NEMA 3R enclosure, it stands up to challenging outdoor and harsh indoor conditions while keeping your electrical system protected and accessible for maintenance.

• Model: HU364RB
• Amperage: 200A
• Voltage: 600V
• Phase: 3‑Phase
• NEMA Rating: 3R
• Type: Safety switch with a fusible, maintainable design for straightforward servicing

Ideal for motor disconnects, panelboards, and branch circuit protection, the HU364RB offers a compact footprint without sacrificing performance. Its fusible design provides integrated protection and simplifies wiring, making it a practical upgrade for existing suites of equipment or new installations where space and reliability matter.

• Outdoor- or harsh-environment-ready with a NEMA 3R enclosure that resists rain and debris
• 3‑phase, 200A capacity supports a broad range of mid-sized motor and distribution needs
• Maintainable fusible switch design enables efficient fuse replacement and service, reducing downtime

Who this is for: facilities requiring a dependable, front- or side-accessible disconnect for motors, pumps, fans, HVAC systems, and outdoor equipment; electrical contractors upgrading street‑side or campus infrastructure; and building owners seeking a robust, code‑compliant isolation switch for panelboards and branch circuits.

Why choose the Square D HU364RB over other safety switches? It combines high‑current protection with a compact form factor and a proven NEMA 3R rating, delivering reliable isolation and straightforward maintenance in a single, integrated package. This makes it easier to consolidate protective devices without increasing enclosure size, simplifying installation and future service lifecycles.

Practical considerations: verify your system is within 600V and three‑phase specifications, ensure compatibility with your protection strategy, and install per local electrical codes to maximize safety and reliability in every application—from factory floors to outdoor equipment pads.