Square D HU363 - 100A, 600V, 3-Pole, Fused Disconnect Switch

Square D HU363 is a high-performance fused disconnect switch engineered for safe, reliable electrical isolation in demanding industrial and commercial environments. Built to support lockout/tagout procedures, it provides dependable disconnection under load, helping maintenance teams work safely and efficiently while reducing downtime.

Key reasons to choose the HU363:

• 100A amperage rating paired with a 600V voltage rating offers solid protection for standard three-phase power systems without oversizing equipment.
• 3-Pole configuration ensures complete isolation of all conductors in a three-phase circuit, delivering thorough and unmistakable disconnection when needed.
• Fused design provides rapid fault isolation, helping to contain faults and protect downstream equipment in stressful operating conditions.
• Rugged, industrial-grade construction built to withstand daily on/off cycles and the rigors of commercial facilities and manufacturing floors.
• Lockout/Tagout compatibility supports standard safety procedures, letting technicians secure power during routine maintenance or service work.

Practical use cases

Ideal for motor control setups, service entrances, and equipment rooms where reliable isolation is critical. Use the HU363 in:

• Manufacturing and processing lines requiring safe disconnection under load
• HVAC and large mechanical systems needing clean, controllable power shutdowns
• Power distribution panels and switchgear assemblies in industrial settings

Who benefits

Maintenance engineers, electrical technicians, and facility managers who prioritize safety, reliability, and ease of maintenance will find the Square D HU363 to be a trusted component in their electrical safety repertoire. It’s especially well-suited for environments where lockout/tagout procedures are routine and consistent, and where a clear, fused disconnect path is essential for operational integrity.

Specifications at a glance

• Amperage rating: 100A
• Voltage rating: 600V
• Poles: 3-Pole
• Product type: Fused Disconnect Switch
• Brand: Square D
• Model: HU363

Enhance electrical safety and streamline maintenance with the Square D HU363—the trusted solution for clean, reliable isolation in demanding settings.