Square D HDA36150SL 150A 3-Pole 600 V Circuit Breaker

The Square D HDA36150SL 150A 3-Pole 600 V Circuit Breaker is purpose-built for robust protection in demanding 3-phase power systems. Designed to interrupt all three hot conductors simultaneously, this 150 Amp breaker safeguards heavy equipment, motors, and feeders across industrial and commercial installations operating up to 600 volts.

• Part Number: HDA36150SL
• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V

Why this matters

• Three-pole construction ensures synchronized interruption of all phases in 3-phase circuits, reducing the risk of neutral imbalances and equipment damage during faults.
• 600 V rating expands protection for workloads in medium-voltage environments, including industrial drives, pumps, conveyors, and large HVAC systems.
• Part of Square D’s trusted line, it’s designed for reliable performance, predictable tripping behavior, and straightforward replacement in compatible panels.

Ideal applications

• Mid to large industrial motor circuits and three-phase feeders
• Commercial electrical rooms serving heavy equipment and machinery
• Distribution panels where durable, easy-to-maintain overcurrent protection is essential

Practical guidance for use

• Verify panel compatibility and ensure the system operates within a 3-phase, up to 600 V framework.
• Use as a direct replacement part in compatible Square D installations to maintain consistent protection characteristics.
• Follow standard electrical safety practices and consult a licensed electrician for installation and testing.

With the Square D HDA36150SL, you gain precise, dependable protection for critical 3-phase loads, a straightforward replacement path for existing Square D infrastructure, and peace of mind that your distribution system remains safeguarded against overloads and faults up to 600 volts.