Square D HLA36150UHYP 150A 3-Pole 600 V Circuit Breaker

The Square D HLA36150UHYP is a purpose-built solution for robust three‑phase protection in commercial and light‑industrial electrical systems. With a 150 A current rating, this 3‑pole circuit breaker is designed to reliably interrupt power to protect downstream equipment from overloads and short circuits at up to 600 V. Part Number HLA36150UHYP identifies this exact model within the trusted Square D lineup, delivering consistent performance in demanding environments.

Why this breaker stands out

Three-pole construction provides balanced protection across all phases, which helps maintain equipment longevity and prevents phase imbalances that can damage motors and controls. This device is optimized for mid‑ to high‑demand panel duties, making it a strong choice for feeder protection, motor control circuits, and distribution panels in commercial facilities and light industrial settings.

Key specifications

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HLA36150UHYP
• Brand: Square D

Ideal applications and use cases

• Three‑phase motor circuits in manufacturing equipment, conveyors, and pumps
• Feeder protection for commercial distribution panels and electrical rooms
• Service entrance or main distribution panels where reliable 3‑phase interruption is required
• retrofit projects upgrading older panels to meet modern safety and protection standards

Installation and compatibility tips

Ensure the breaker is appropriate for your Square D panel/enclosure and that mounting and wiring arrangements align with your system’s specifications. Confirm that conductor sizes, torque settings, and enclosure clearance meet local electrical codes and the manufacturer’s installation instructions. This model is designed to integrate seamlessly within compatible Square D distribution systems, providing consistent trip performance when protection is needed for three‑phase loads.

Maintenance and practical considerations

Periodically inspect connections for signs of overheating, corrosion, or loose terminations. If the breaker trips frequently under normal operating conditions, review load balances across the three phases and verify motor startup loads and protective settings. Replacing with an exact HLA36150UHYP part ensures continued alignment with your system’s protection strategy and electrical code requirements.