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

The Square D H364N is a 200A, 3-pole fused disconnect switch engineered for safe, reliable electrical isolation in demanding industrial and commercial environments. Designed to support proper lockout/tagout procedures, it provides dependable disconnection under load while standing up to long-term use in busy electrical rooms.

Key advantages

• 200A rating handles substantial feeder and motor circuits without compromising response time during fault conditions.
• 3-pole configuration ensures complete phase isolation for added safety and easier system maintenance.
• Fused design delivers overcurrent protection and controlled disconnection under load, reducing the risk of arc flash and equipment damage.
• NEMA 1 enclosure provides straightforward indoor installation in clean, controlled environments, simplifying mounting and wiring.
• Lockout/tagout compatibility supports standard safety protocols, helping maintenance teams work confidently around energized equipment.
• Durable, long-term performance built to withstand the rigors of industrial and commercial settings, delivering reliable service over time.

Who benefits most: facility engineers, maintenance technicians, panel builders, and electrical contractors who need a robust, clearly isolated disconnect point for servicing energized lines and equipment.

Specifications at a glance

• Brand: Square D
• Model: H364N
• Product Type: Fused Disconnect Switch
• Amperage Rating: 200A
• Number of Poles: 3-Pole
• Enclosure Rating: NEMA 1
• Application: Industrial and commercial environments requiring safe electrical isolation

With the Square D H364N, you gain a clearly defined, safely isolated point in your electrical distribution that pairs rugged performance with simple, code-aligned maintenance practices. It’s a practical, purpose-built solution for projects where dependable disconnection and protective isolation aren’t optional—they’re essential.