Square D D323N - 100A, Fused Disconnect Switch

The Square D D323N is a 100A fused disconnect switch engineered for industrial and commercial environments where safe, reliable electrical isolation is non-negotiable. Its robust design ensures consistent performance when controlling critical loads, making maintenance and servicing safer and more efficient.

Designed to support proper lockout/tagout (LOTO) procedures, the D323N provides dependable disconnection under load, helping teams protect personnel and equipment during energized work. Built for durability, it stands up to daily use in demanding settings, offering long-term reliability.

Key benefits

• 100A amperage rating suitable for medium to heavy electrical loads, including motors, feeders, and power distribution points.
• Fused disconnect design combines isolation with overcurrent protection, streamlining safety and maintenance workflows.
• LOTO compatibility supports standard lockout/tagout procedures to ensure safe servicing.
• Under-load disconnection reliability ensures a clean, dependable shutdown even when circuits are energized.
• Durable industrial/reliable construction built to perform in harsh commercial and industrial environments.

Specifications

• Amperage Rating: 100A
• Product Type: Fused Disconnect Switch
• Brand: Square D
• Model: D323N

Ideal applications

• Main service disconnects for motors, pumps, conveyors, and other heavy equipment
• Maintenance shutoffs in industrial facilities and commercial buildings
• Safe isolation points within electrical panels and enclosures

Why choose the D323N over alternatives

Compared to non-fused isolators, the D323N provides integrated overcurrent protection in a single device, reducing component count and simplifying safety procedures. Its fusion-based approach supports reliable isolation under load, helping teams minimize downtime and improve incident prevention during maintenance tasks.