Square D HLA36150SHYP 150A 3-Pole 600 V Circuit Breaker

Meet the Square D HLA36150SHYP 150A 3-Pole 600 V Circuit Breaker—designed to deliver reliable, field-ready protection for demanding three‑phase electrical systems. With a precise 150 A rating, three poles, and a 600 V maximum, this breaker is built for commercial and light industrial use where consistent performance and easy maintenance matter most. The part number HLA36150SHYP ensures you’re selecting an exact fit for compatible Square D panels and configurations.

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HLA36150SHYP
• Brand: Square D

Why a 3-Pole, 600 V design is essential for three-phase protection

In three-phase electrical systems, a 3-pole breaker guards all legs of the circuit, ensuring synchronized shutoff during overloads or faults. The 600 V rating expands its applicability to higher‑voltage distributions common in commercial facilities, motor control centers, and industrial equipment, providing robust protection without compromising panel compatibility.

Best use cases and scenarios

• Three‑phase motors and drives in manufacturing, processing, or HVAC applications up to 150 A
• Power distribution panels in commercial buildings with balanced three‑phase loads
• Replacement for existing Square D installations that require the HLA36150SHYP specification

What makes this breaker stand out

Beyond basic protection, the HLA36150SHYP is designed for straightforward maintenance and compatibility. Its three‑pole construction reduces wiring complexity, helps maintain phase balance, and simplifies coordination with other protective devices in a Square D ecosystem. The 150 A rating targets mid‑to‑high‑amperage circuits, offering dependable protection for equipment and wiring without nuisance trips under normal startup surges.

Practical guidance for safe, effective use

• Confirm panel compatibility and ensure the replacement matches your existing Square D distribution components
• Perform load calculations to verify that 150 A is the appropriate protection threshold for your three‑phase circuits
• Engage a licensed electrician for installation to ensure correct seating, secure connections, and proper labeling
• Label protective devices clearly to reflect protected circuits and maintain clear, safe accessibility