Square D HDA36080UO 80A 3-Pole 600 V Circuit Breaker

Powerful protection for three‑phase electrical systems, the Square D HDA36080UO is an 80‑amp, 3‑pole circuit breaker rated for up to 600 volts. This genuine Square D part, identified by HDA36080UO, is built to reliably interrupt fault currents and ensure a safe, controlled shutdown of equipment in commercial and light industrial environments.

• Part Number: HDA36080UO
• Current Rating: 80 A
• Poles: 3
• Voltage Rating: 600 V
• Brand: Square D

Why this matters: In three‑phase systems, protecting each leg with a dedicated 3‑pole breaker ensures balanced protection, reduces the risk of damage from overcurrents, and helps maintain reliable operation of motors, drives, and other three‑phase equipment.

Ideal use cases include protecting branch circuits that feed 3‑phase motors, conveyors, HVAC equipment, panelboards, and distribution feeders in warehouses, manufacturing facilities, and commercial buildings. When you need dependable, fast‑acting interruption for up to 80 amps on a 3‑wire system, this Square D unit offers a precise fit for compatible panels and enclosures.

Practical considerations: verify that your electrical system matches the 3‑pole, 80A, 600V specifications before installation, and ensure the breaker is compatible with your Square D panel or enclosure. Follow all safety guidelines and local electrical codes during installation and maintenance.