Square D HLA36150SLYP 150A 3-Pole 600 V Circuit Breaker

Meet the Square D HLA36150SLYP 150A 3-Pole 600 V Circuit Breaker—built to deliver dependable overcurrent protection for three-phase electrical systems in commercial and light industrial settings. This Square D unit is engineered to safeguard feeders, panelboards, and equipment from overloads and faults, helping you minimize downtime and protect valuable assets.

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HLA36150SLYP
• Brand: Square D

Why this 150A, 3-Pole 600 V breaker stands out: it’s purpose-built for three-phase applications, offering reliable protection for large motors, compressors, conveyors, and other heavy loads common in commercial and light industrial installations. By interrupting fault currents and overloads promptly, it helps protect wiring, transformers, and downstream devices, reducing the risk of insulation damage and fire hazards.

Ideal applications

• Protection for three-phase feeders in commercial panelboards and industrial distribution systems up to 600 V
• Motor control centers and large-equipment circuits requiring robust 3-pole protection
• Main feeder and branch circuit protection where consistent performance and compatibility with Square D infrastructure matter

Design and compatibility matter when you’re updating or maintaining electrical systems. The HLA36150SLYP is purposefully aligned with Square D panel and accessory ecosystems, offering a straightforward replacement path for existing 3-pole, 600 V installations. It’s the kind of component that reduces maintenance surprises and keeps critical loads protected during peak demand or fault conditions.

Practical considerations for use include sizing your load accurately, ensuring the panel and bus arrangement are compatible with a 3-pole, 600 V device, and following standard electrical safety practices during installation and servicing. For professionals sourcing reliable, industry-standard overcurrent protection, the Square D HLA36150SLYP delivers clear value with precise current rating, proven three-pole protection, and a 600 V capability designed for demanding environments.