Square D HGA36125UO 125A 3-Pole 600 V Circuit Breaker

The Square D HGA36125UO is a purpose-built 3-pole circuit breaker designed to protect three-phase electrical feeders with precision in demanding industrial and commercial environments. With a 125 A current rating and a 600 V maximum voltage, this unit delivers reliable protection for heavy-duty power distribution while staying fully compatible with Square D panels and the HGA family.

• Part Number: HGA36125UO
• Current Rating: 125 A
• Poles: 3
• Voltage Rating: 600 V

Ideal applications include protecting three-phase feeders in industrial panels, data centers, manufacturing lines, and large motor circuits where stable, predictable protection is essential for continuous operation and equipment safety.

• Exact compatibility with Square D panels and the HGA series ensures straightforward replacement and consistent performance with your existing electrical infrastructure.
• Three-pole protection provides synchronized disconnection across all phases, enhancing safety and minimizing the risk of multi-phase faults spreading through the system.
• High-current capability supports demanding loads up to 125 A without compromising protection or reliability.
• Industrial-grade readiness designed to perform in typical 600 V distribution environments, aligning with common electrical distribution standards.

Practical considerations: verify panel compatibility within the Square D HGA family, ensure proper installation according to your panel’s guidelines, and conduct regular inspection to confirm secure mounting and clean contact surfaces. If you’re upgrading or stocking replacements for a three-phase distribution network, the HGA36125UO delivers dependable protection with a straightforward-fit, brand-aligned solution.