Square D HDA36150SJ 150A 3-Pole 600 V Circuit Breaker

Introducing the Square D HDA36150SJ 150A 3-Pole 600 V Circuit Breaker—a purpose-built protection device designed for robust performance in modern 3-phase electrical systems. With a 150-amp rating and a 600-volt capability, this breaker is built to safely interrupt fault currents and shield panels, feeders, and equipment in commercial and light-industrial environments.

• Precise 150 A protection tailored for 3-phase circuits, helping to prevent damage to downstream equipment and reduce downtime.
• Three-pole design ensures simultaneous disconnection of all phases for complete and safe circuit shutdown during faults.
• 600 V rating supports higher-voltage distribution networks common in commercial and industrial settings.
• Exact compatibility with Square D installations thanks to the precise part number HDA36150SJ, simplifying replacements and ongoing maintenance.
• Durable, panel-ready construction designed to withstand frequent operation in demanding environments while maintaining reliable protection.

Ideal use cases

• Main disconnects and feeders in 3-phase commercial panels and switchgear.
• Protection for 3-phase motors and equipment in light-industrial applications (up to 150 A).
• Repairs or upgrades in existing Square D installations to preserve system uniformity and performance.

When selecting this breaker, ensure your panel and service are configured for 3-pole devices rated at 150 A and up to 600 V. Use the exact part number HDA36150SJ to guarantee proper mounting and electrical characteristics, and document the change for safe, compliant operation.

• Part Number: HDA36150SJ
• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V