D326NR - 600A, 240V, 3-Pole, General-Duty, Fusible, Switch, NEMA 3R

The D326NR is a rugged, three‑phase disconnect designed to deliver dependable on/off isolation and built‑in overcurrent protection in demanding industrial and commercial settings. With a 600A rating at 240V and three poles, this general‑duty, fusible switch is purpose‑built to keep motors and branch circuits safe and accessible when you need it most.

Key capabilities at a glance

• Model: D326NR
• Current rating: 600A
• Voltage: 240V
• Poles: 3‑Pole (three‑phase)
• Enclosure rating: NEMA 3R for outdoor or harsh environments
• Duty class: General‑Duty, fusible switch
• Protection: Fusible design provides integrated overcurrent protection alongside disconnect capability

Why this fusible switch stands out

Designed to simplify motor control and electrical protection, the D326NR combines robust durability with straightforward maintenance. The NEMA 3R enclosure shields contents from weather, dust, and debris, making it a reliable choice for outdoor equipment, pump stations, and climate‑controlled outdoor installations. The fusible design means you get both a safe break in the circuit and protective fusing in one compact unit—so you can protect both the drive and the wiring without adding separate components.

Ideal use cases

• Motor disconnects: Reliable isolation for large motors in manufacturing rooms, conveyors, and processing lines.
• Panelboards and distribution: Convenient main or branch circuit protection in compact electrical panels.
• Outdoor equipment: Equipment cabinets, wells, outdoor pumps, and other installations that require weather‑resistant protection.

Practical advantages and outcomes

• Immediate isolation: A clear, safe disconnect path for maintenance or emergency shutdowns.
• Overcurrent protection in one package: Fusible elements guard conductors and connected equipment against overloads.
• Ease of service: The 3‑pole configuration streamlines wiring and reduces space requirements in control enclosures.
• Resilient in challenging environments: NEMA 3R rating supports outdoor or semi‑exposed installations without compromising reliability.

What to consider when configuring

Match the D326NR to three‑phase, 240V systems requiring a sturdy, maintainable disconnect with integrated overcurrent protection. It’s an excellent fit where a compact, outdoor‑capable fusible switch is preferred over separate switch and fuse assemblies, particularly in motor control centers, outdoor pump houses, or protected panels serving multiple branch circuits.

Specification snapshot

• Model: D326NR
• Amperage: 600A
• Voltage: 240V
• Poles: 3‑Pole
• NEMA rating: 3R
• Duty: General‑Duty
• Functional type: Fusible switch

For teams seeking reliable motor control with built‑in protection and outdoor‑ready construction, the D326NR offers a precise balance of rugged dependability and practical maintenance—keeping your power distribution tidy, protected, and easy to service when it matters most.