Square D H221NRB - 30A, 240V, 2-Pole, Fusible, Disconnect Switch, NEMA 3R

Meet the Square D H221NRB, a purpose-built 30A, 240V, 2-Pole Fusible Disconnect Switch with a NEMA 3R rating. This robust device is designed for reliable on/off isolation and overcurrent protection in demanding industrial and commercial environments, helping protect motors, wiring, and equipment while minimizing downtime.

• Two-pole isolation: Simultaneously disconnects both hot legs for clean, safe service and maintenance.
• Fused protection: Integrated fusing provides precise overcurrent protection within a compact, single enclosure.
• NEMA 3R rated: Built to withstand outdoor weather, dust, and incidental impact, making it suitable for exterior installations and harsh environments.
• Versatile applications: Ideal for motor disconnects, panelboards, and branch circuits that require a dedicated, maintainable fusible switch.
• Maintenance-friendly design: Replaceable fuses simplify upkeep and reduce downtime during service or fuse changes.

Designed for facility managers and electricians, this switch provides a reliable point of control in electrical systems where space is at a premium and protection is non-negotiable. Use it where you need:

• Direct, code-aligned motor disconnects in small to medium equipment configurations.
• Compact protection within panelboards and distribution enclosures.
• Outdoor or semi-exposed installations that demand weather-resistant, durable components.

Practical considerations for optimal use:

• Ensure the load aligns with 30A and 240V ratings before installation.
• Pair with compatible fuses and follow standard lockout/tagout procedures during maintenance.
• Plan for straightforward fuse replacement to minimize service interruptions and extend equipment life.