Square D D324N - 200A, 240V, 3-Pole, Fused Safety Switch

The Square D D324N fused safety switch is built for serious power work in industrial and commercial settings where safe, reliable electrical isolation is non-negotiable. Designed to withstand demanding environments, this 200A, 240V, 3-pole device provides a unified solution for disconnection and protection that keeps maintenance crews safe and operations running smoothly.

Key advantages that matter in the field:

• 200A at 240V, 3-pole configuration—perfect for three-phase feeders and motor circuits, delivering clean, coordinated switching for reliable system control.
• Built-in fused protection—combines disconnect capability with overcurrent protection, reducing fault energy and protecting downstream equipment during abnormal conditions.
• Lockout/Tagout compatibility—engineered to support standard LOTO procedures, enabling safe, compliant servicing and maintenance without compromising system safety.
• Durable industrial design—crafted to deliver long-term performance in busy facilities, from manufacturing floors to commercial mechanical rooms.
• Versatile installation—well-suited for service entrances, motor control centers, and distribution feeders where a reliable, code-aligned disconnect is required.

Who benefits most? Electrical professionals, facilities managers, and system integrators who need a dependable, code-friendly disconnect that simplifies safety protocols and minimizes downtime during maintenance. The D324N stands out by delivering both isolation and protection in a single, rugged package—reducing complexity compared with separate fusing and switching solutions.

Practical usage notes:

• Use as the primary isolation point for three-phase equipment and large motors where immediate disconnection under fault conditions is critical.
• Follow your organization’s lockout/tagout procedures to maximize worker safety during servicing.
• Inspect and replace fuses only with the correct type and rating specified for the D324N to maintain protection integrity.
• Ensure proper mounting and enclosure compatibility within your electrical distribution system for reliable operation.

For facilities seeking a purpose-built, safety-focused disconnect that delivers dependable performance under load, the Square D D324N fused safety switch offers a clear, practical advantage. It aligns with industrial and commercial power distribution needs while supporting rigorous safety workflows and long-term durability.