Square D H364N - 200A, 3-Pole, Fused Disconnect Switch

The Square D H364N is a rugged, high-performance fused disconnect switch crafted for safe electrical isolation in demanding industrial and commercial settings. With a 200A rating across three poles, this unit delivers dependable disconnection under load while supporting proper lockout/tagout procedures to protect maintenance personnel.

Why the Square D H364N stands out

Designed for three-phase systems, the 3-pole configuration ensures full isolation of all conductors, reducing the risk of partial energization during service or fault events. The fused design adds overcurrent protection, helping to limit fault energy and protect equipment downstream. Its NEMA 1 enclosure makes it suitable for indoor, dry locations, providing solid protection against dust and incidental contact. Built for long-term durability, the H364N stands up to the daily demands of industrial and commercial environments while maintaining reliable performance over time.

Key features at a glance

• Amperage Rating: 200A
• Poles: 3-Pole
• Enclosure: NEMA 1 (indoor, dry locations)
• Type: Fused Disconnect Switch
• Brand / Model: Square D H364N

Ideal use cases

Perfect for service feeders, motor control centers, and machine rooms where a reliable disconnect is essential. Use the H364N to isolate power to heavy equipment during maintenance, to provide a clean, safe shutdown path for motors and processes, or as a primary or auxiliary disconnect in commercial electrical rooms. Its fuse-based protection helps prevent damage from short circuits while ensuring a deliberate, clearly visible disconnect when needed.

How it benefits your operation

• Enhanced safety during maintenance: Supports proper lockout/tagout procedures, helping protect workers during service.
• Reliable load disconnection: Designed to safely interrupt current under load, reducing the risk of arcing and equipment damage.
• Durable, long-lasting performance: Built to endure the rigors of industrial use while maintaining dependable operation over time.
• Straightforward integration: Three-pole configuration aligns with standard three-phase electrical systems, making it a seamless fit for many panels and switchgear layouts.

Specifications at a glance

• Amperage Rating: 200A
• Poles: 3-Pole
• Enclosure Rating: NEMA 1
• Product Type: Fused Disconnect Switch
• Brand: Square D
• Model: H364N

Choose the Square D H364N when you need a dependable, purpose-built fused disconnect switch that combines robust overcurrent protection with clear, intentional isolation. It’s well-suited for applications where safety, reliability, and adherence to lockout/tagout practices are non-negotiable, and where a durable indoor-rated solution is required for three-phase power systems.