Square D H363DS - 100A, 600V, 3-Pole, Fused Disconnect Switch

The Square D H363DS 3-Pole Fused Disconnect Switch is built for demanding industrial and commercial environments that require safe, reliable electrical isolation. With a 100A rating and a 600V maximum, this unit delivers dependable disconnection under load while supporting rigorous lockout/tagout (LOTO) procedures to protect maintenance personnel.

• Three-pole design provides true three-phase isolation, essential for motor control and complex power distribution.
• 100A current rating handles common industrial circuits, pumps, conveyors, and equipment feeds with confidence.
• 600V voltage rating suitable for a wide range of medium-voltage systems found in commercial facilities and light industrial setups.
• Fused protection adds overcurrent protection and reliably interrupts power, helping to safeguard downstream equipment from faults.
• NEMA 3R enclosure offers weather-resistant protection for indoor or outdoor installations, enduring rain, dust, and temperature variations.
• Lockout/Tagout compatibility supports safe maintenance practices by preventing accidental re-energization during service.
• Durable, long-term performance designed to withstand demanding environments and provide consistent disconnection when needed.

Ideal applications and scenarios

• Service disconnects for industrial panels and control centers where quick isolation is required.
• Motor control circuits in manufacturing lines, HVAC systems, and processing equipment.
• Outdoor or semi-exposed electrical enclosures that need reliable weather protection.
• Maintenance and repair workflows that rely on proper lockout/tagout procedures to ensure worker safety.

Why choose the Square D H363DS?

• Proven Square D reliability paired with a purpose-built fused disconnect for durable, predictable performance.
• Designed to interrupt current under load, minimizing downtime and reducing exposure to electrical faults during servicing.
• Long-term durability that stands up to harsh environments, ensuring consistent isolation when it matters most.
• Clear, actionable specifications for planning and installation in three-phase distribution schemes.

Specifications at a glance

• Amperage Rating: 100A
• Voltage Rating: 600V
• Number of Poles: 3
• Enclosure Rating: NEMA 3R
• Product Type: Fused Disconnect Switch
• Brand: Square D
• Model: H363DS