Square D H363 - 100A, 600V, 3-Pole, Fused Disconnect Switch

Meet the Square D H363 — a rugged, three‑pole fused disconnect switch engineered for reliable electrical isolation in demanding industrial and commercial settings. With a 100A rating, 600V capacity, and a NEMA 1 enclosure, this disconnect blends proven protection with straightforward operation, making maintenance safer and downtime easier to manage.

Key specifications

• Current and voltage: 100A at up to 600V
• Configuration: 3‑pole fused disconnect switch for complete phase isolation
• Enclosure: NEMA 1 indoor-rated housing built for durability and secure mounting
• Protection: Fused design provides overcurrent protection and controlled shutdown of equipment
• Brand/model: Square D H363

Why this matters

In environments that require strict lockout/tagout procedures, the H363 delivers dependable isolation—even when equipment is energized. The fused construction interrupts current cleanly, reducing arc flash risk and simplifying service work. Its three‑pole design ensures all phases are opened simultaneously, which is essential for protecting personnel and downstream components during maintenance or repair. Built to endure typical site conditions, this switch supports long‑term reliability on busy factory floors, in utilities rooms, and across commercial spaces.

Ideal uses

• Motor control and equipment shutoff in production lines, conveyors, pumps, and fans
• Service disconnects for industrial machinery and processing equipment
• Areas requiring compliant lockout/tagout workflows and clear safety isolation

Practical installation and operation tips

• Install the H363 at the main feed point to enable quick power shutdown for maintenance
• Pair with correctly rated fuses and follow local electrical codes and safety protocols
• Label circuits clearly and implement formal lockout/tagout procedures to maximize personnel safety
• Ensure secure mounting and verify correct alignment of line and load terminals during setup

What you gain

When reliability and safety are non‑negotiable, the Square D H363 delivers. It provides robust, easy‑to‑operate electrical isolation for critical equipment, supports OSHA and industry‑standard lockout/tagout practices, and helps minimize downtime by offering dependable, fault‑tolerant performance across industrial and commercial environments.