Square D D324N - 200A, 240V, Fused Disconnect Switch

Meet the Square D D324N, a purpose-built fused disconnect switch engineered for industrial and commercial electrical isolation you can trust. With a 200A amperage rating and 240V capability, this device delivers dependable disconnection under load, helping protect personnel and downstream equipment during maintenance, testing, or fault events.

Designed to integrate smoothly into safety procedures, the D324N supports proper lockout/tagout (LOTO) practices, making it an essential component for compliant, safer operations. Its robust construction is built for long-term durability in demanding environments, where reliable isolation and quick, clean disconnections matter most.

Key benefits

• Precise electrical isolation under load: The fused design provides controlled disconnection, reducing arcing and enabling safer maintenance and service work.
• Clear safety compliance with LOTO: Facilitates lockout/tagout procedures to protect workers during servicing and repairs.
• High-capacity performance: 200A current handling at 240V makes it suitable for main feeders, panel isolates, and equipment disconnects in mid- to large-scale installations.
• Durable, reliable build: Built to endure the rigors of industrial and commercial use, delivering consistent performance over time.
• Trusted brand and model: Square D, model D324N, a reputable choice for electrical safety and dependable operation.

Ideal applications and use cases

• Main service disconnects for commercial electrical rooms and industrial equipment lines
• Isolation points for motor circuits, tooling, and processing equipment
• Maintenance shutdowns where safe, verifiable disconnection is essential
• Retrofits or upgrades of electrical distribution where a rugged fused disconnect is required

Specifications at a glance

• Amperage Rating: 200A
• Voltage Rating: 240V
• Product Type: Fused Disconnect Switch
• Brand: Square D
• Model: D324N