Square D HU364RB - 200A, 600V, 3-Pole, Fused Disconnect Switch

Meet the Square D HU364RB, a purpose-built fused disconnect switch engineered for demanding industrial and commercial environments. When safe and reliable electrical isolation is non-negotiable, this switch delivers steady performance, helping you protect personnel and equipment during maintenance and service windows. It supports proper lockout/tagout procedures and delivers dependable disconnection under load for long-term durability.

Key capabilities that keep your operation running smoothly

• 200 A rating powers sizable three‑phase loads with confident current handling.
• 600 V rating accommodates common industrial distribution while maintaining a robust safety margin.
• 3-Pole design provides complete isolation for three-phase systems, ensuring all conductors are safely de‑energized.
• Fused disconnect combines isolation with overcurrent protection, giving you a clear path to safe maintenance and faster fault diagnosis.
• Lockout/tagout compatibility supports compliant, repeatable safety procedures for personnel working on energized equipment.
• Durable performance built to withstand demanding environments and long service life while preserving reliable shutoff capability.

Practical applications

Ideal for service entrances, motor control centers, and equipment bays across manufacturing floors, warehouses, and commercial facilities. Use the HU364RB to safely isolate feeders to large motors, pumps, conveyors, or HVAC equipment during routine maintenance, repairs, or timed shutoffs.

How it works and why it matters

The fused disconnect sits in the electrical path and uses replaceable fuses to interrupt current when a fault or overload occurs. This arrangement ensures a controlled, predictable isolation point, making it easier to re-energize equipment safely after maintenance and reducing downtime from unexpected energization.

Specifications at a glance

• Brand: Square D
• Model: HU364RB
• Type: Fused Disconnect Switch
• Current rating: 200 A
• Voltage rating: 600 V
• Poles: 3-Pole

Tips for deployment

Match the HU364RB with appropriate fuse elements and verify compatibility with your service layout to ensure full three‑phase isolation. Plan installation in areas where lockout/tagout procedures are routinely practiced, and confirm that personnel are trained on safe energization/de-energization practices to maximize the value of this dependable disconnect switch.