Square D D323N - 100A, 240V, General-Duty, Disconnect Switch

Engineered for reliability in demanding industrial and commercial environments, the Square D D323N is a 100A, 240V general-duty disconnect switch designed to deliver dependable on/off isolation and robust overcurrent protection. This rugged disconnect is built to stand up to real-world use where quick, secure electrical isolation is essential for maintenance, servicing, and protection of downstream equipment.

• 100A, 240V general-duty disconnect: A purpose-built solution for reliable circuit isolation and protection in demanding settings.
• Model D323N: A compact, maintainable fusible switch ideal for motor disconnects, panelboards, and branch circuit protection where space and serviceability matter.
• Versatile applications: Perfect for motor-driven equipment such as pumps, conveyors, HVAC units, and other industrial machinery, as well as main or branch circuit protection within control panels and electrical enclosures.
• Maintenance-friendly design: Built for straightforward servicing and fuse maintenance in busy facilities, reducing downtime during inspections and replacements.
• Durable for harsh environments: Rugged construction that tolerates the vibrations, dust, and temperature variations common in industrial and commercial spaces.

Use cases that illustrate its value include turning motors off safely during routine maintenance, isolating circuits for electrical testing, and providing a reliable, code-friendly point of protection in panelboards where space is at a premium. The D323N pairs with standard electrical gear in Square D ecosystems, offering a coherent, dependable solution for facilities managers and electrical contractors seeking a dedicated disconnect with built-in protection.

Why choose the Square D D323N?

Rather than a generic disconnect, this model brings a purpose-built general-duty solution with a focus on maintainability and compactness. Its 100A, 240V rating covers a broad range of equipment, making it suitable for lighting, motors, and control circuits in both retrofit and new installations. The design emphasizes quick isolation and reliable protection, helping you minimize downtime and simplify routine servicing.

Specs at a glance

• Amperage: 100A
• Voltage: 240V
• Duty: General
• Model: D323N