Square D H364N - 200A, 600V, 3-Pole, Fused Safety Switch

The Square D H364N is a 200A, 600V, 3-pole fused safety switch engineered for indoor industrial and commercial environments where safe electrical isolation and reliable disconnection matter most. Built to support proper lockout/tagout procedures, it delivers dependable performance under load and enduring durability for demanding applications.

• Fused, three-pole design provides robust interrupting capability for three‑phase circuits, helping protect equipment and personnel during maintenance or emergency faults.
• NEMA 1 enclosure offers solid indoor protection against dust and incidental contact, making it a practical choice for electrical rooms, machine rooms, and service panels.
• Lockout/tagout readiness supports safe lockout/tagout procedures, ensuring maintenance teams can isolate circuits confidently before servicing equipment.
• Durable, long-term reliability built to withstand the rigors of busy facilities, minimizing unscheduled downtime and maintenance hassles.

Ideal for facilities that rely on dependable electrical isolation to keep operations safe and compliant, the H364N is well-suited for motor feeders, machine tools, processing lines, and essential service panels where quick, safe disconnection under load is critical.

Why choose the Square D H364N in your electrical safety toolkit? This fused safety switch pairs precise, low-impedance switching with a rugged enclosure, delivering predictable performance when it matters most—during routine maintenance windows and in fault conditions alike. By combining a rugged 200A rating with a 600V voltage capability, it accommodates common industrial three-phase circuits while staying compact enough for practical installation in constrained spaces.

Key specifications

• Amperage rating: 200A
• Voltage rating: 600V
• Number of poles: 3-Pole
• Enclosure rating: NEMA 1
• Product type: Fused safety switch
• Brand: Square D
• Model: H364N

Practical tips for getting the most from your H364N: pair it with the appropriate fuses to match your circuit’s load profile, ensure all lockout/tagout devices are compatible with the enclosure, and schedule regular inspections of the switch contacts and wiring connections. This approach minimizes wear, maintains clean disconnections under load, and extends the life of your electrical distribution system.