Square D H363 - 100A, 480/600V, 3-Pole, Fusible, Disconnect Switch

The Square D H363 Fusible Disconnect Switch is engineered for demanding industrial and commercial environments, delivering dependable on/off isolation combined with robust overcurrent protection. With a 100A rating, a 3-Pole configuration, and a 480/600V operating range, this switch is purpose-built to safeguard motor circuits, panelboards, and branch circuitry while keeping installation compact and maintainable.

Why the H363 stands out

• Precisely rated 100A, 3-Pole design ensures synchronized switching of all three phases, reducing arcing and promoting balanced protection across three-phase systems.
• Fusible protection provides targeted, reliable overcurrent defense, helping prevent equipment damage from overloads or short circuits.
• High-voltage capability supports up to 480/600V, making it suitable for a variety of industrial power distribution needs.
• Compact, maintainable form balances space constraints with easy fuse access, enabling straightforward servicing and fuse replacement without a full disassembly.
• Versatile installation for multiple applications—an ideal choice for motor disconnects, panelboards, and branch circuit protection where clean, secure isolation is essential.

Ideal uses and practical benefits

Use the Square D H363 to create reliable isolation points in motor control centers, service panels, and distribution boards. Its fusible design means you can tailor protection to the exact motor or circuit load, reducing nuisance trips while preserving equipment longevity. The 3-pole arrangement ensures all live conductors are treated together, simplifying maintenance and improving fault-handling consistency across your electrical infrastructure.

Specifications at a glance

• Model: H363
• Amperage: 100 A
• Voltage: 480/600 V
• Poles: 3-Pole
• Fused: Fusible

Designed to integrate seamlessly into existing power distribution schemes, the Square D H363 Fusible Disconnect Switch delivers dependable isolation, precise overcurrent protection, and practical maintenance benefits—all in a compact package that fits tighter spaces without sacrificing performance. If you’re refining your motor protection strategy or upgrading panelboard protection, this switch offers a focused, reliable solution built to handle real-world industrial demands.