Square D HDA36080UD 80A 3-Pole 600 V Circuit Breaker

Meet the Square D HDA36080UD 80A 3-Pole 600 V Circuit Breaker — a purpose-built protector for three‑phase power distribution. This 80‑amp, three‑pole unit is engineered to interrupt fault currents quickly and reliably, helping safeguard both equipment and people in demanding industrial and commercial environments. Part number HDA36080UD, this breaker is synonymous with dependable Square D protection for high‑voltage, three‑phase circuits.

Key specifications

• Part Number: HDA36080UD
• Current rating: 80 A
• Poles: 3
• Voltage rating: 600 V

Why this 3‑pole design matters

• Three‑phase protection: The 3‑pole configuration ensures all phases are simultaneously interrupted, reducing the risk of partial faults and providing balanced protection for motors, drives, and three‑phase feeders.
• High‑voltage readiness: With a 600 V rating, this breaker is suited for equipment and distribution panels that operate at higher voltages, delivering a reliable line‑side protection option where it’s needed most.
• Reliable, proven performance: Built by Square D, this breaker is designed for long service life in demanding environments, offering consistent tripping behavior and straightforward replacement in compatible panels.

Ideal applications and use cases

• Protecting three‑phase motor circuits, conveyors, and pumps in manufacturing facilities.
• Distributing safe power to HVAC systems, chillers, and large industrial equipment.
• Serving as a robust protective device in commercial and light industrial panel boards that require reliable 3‑phase protection up to 600 V.

What sets this apart from alternatives

• Specific three‑pole 80 A protection: Targets three‑phase circuits precisely, avoiding partial protection gaps common with single‑pole solutions.
• 600 V capability: A higher voltage rating expands compatibility with a broader range of equipment and distribution configurations.
• Brand‑backed reliability: Part of Square D’s established protection lineup, offering consistent performance and easier sourcing for replacement parts and accessories.

Practical guidance for use

To maximize safety and reliability, ensure the HDA36080UD is installed in a compatible Square D panel enclosure and matched to the system’s voltage and current requirements. This breaker is best suited for applications where clean, simultaneous disconnection of all three phases is essential for protecting motors, drives, and three‑phase feeders from overloads and short circuits. As with any high‑voltage protection device, follow local electrical codes and manufacturer installation instructions for proper mounting, wiring, and maintenance.