Square D HLA36150UNYP 150A 3-Pole Circuit Breaker

Meet the Square D HLA36150UNYP 150A 3-Pole Circuit Breaker — a purpose-built protection solution for three-phase electrical systems. This 150-amp unit is designed to interrupt fault currents quickly and reliably, safeguarding feeders, motors, and panel components in commercial and light industrial environments. With the exact part number HLA36150UNYP, you’ve got a precise replacement that integrates seamlessly into Square D installations.

• Three-pole design for balanced 3‑phase protection — ensures simultaneous disconnection across all phases, preventing phase imbalances that can damage equipment and cause nuisance trips.
• 150 A current rating — offers strong overcurrent protection for high‑demand feeders and motor circuits while helping minimize downtime from electrical faults.
• Directly identifiable part: HLA36150UNYP — simplifies ordering, stocking, and panel retrofits within the Square D ecosystem.
• Rugged construction for industrial use — built to endure the rigors of demanding environments, providing dependable performance over the long term.

Common scenarios where this breaker shines include protecting large motor loads, HVAC feeders, and three‑phase distribution circuits in commercial panels or light industrial panels. It’s a practical choice when upgrading old equipment, expanding a distribution system, or standardizing protection across multiple panels with Square D components.

Why this 3‑pole, 150A unit matters

In three‑phase systems, protecting all phases simultaneously is crucial to prevent overheating, equipment wear, and unbalanced loads. The HLA36150UNYP delivers that coordinated protection, reducing the risk of transformer or motor damage and helping you maintain reliable power delivery to critical loads.

Tips for selection and installation — verify that your panel is compatible with Square D H‑frame/plug‑in style breakers and follow standard torque specifications during connection. Use this unit as a direct replacement in compatible Square D panels to ensure consistent performance and warranty alignment.