Square D HLA36150UA 150A 3-Pole 600 V Circuit Breaker

Meet the Square D HLA36150UA, a purpose-built circuit breaker designed for robust protection of 3-phase electrical systems. With a 150 A rating and a 3-pole configuration, this 600 V breaker is built to handle demanding industrial and commercial applications where reliable overcurrent protection is essential.

Engineered for dependable performance in higher-voltage distribution, the HLA36150UA line is tailored for three-phase circuits, providing dedicated protection for heavy machinery, feeders, and motor loads. Its 600 V rating supports a broad range of electrical environments, giving you a single, trusted device to safeguard equipment and prevent costly outages.

Key specifications

• Part number: HLA36150UA
• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V

Practical use cases and benefits

• Three-phase protection for commercial and industrial panels, ensuring balanced distribution and reliable shutoff in the event of overcurrent.
• Protection for heavy machinery and motor circuits where a 3-pole configuration helps coordinate across all phases, reducing risk of uneven current draw.
• Direct replacement option within compatible Square D enclosures, enabling straightforward maintenance and minimal downtime during upgrades or repairs.
• Part of a trusted Square D line, designed to integrate seamlessly with existing electrical layouts and panel bus systems that require a 150 A, 3-pole, 600 V solution.

Why choose this breaker

• Targeted for 3-phase systems: The 3-pole design ensures consistent protection across all phases, which is crucial for balanced performance of motors and multi-phase loads.
• High-current capability: A 150 A rating supports sizable feeders and equipment without compromising protection or safety margins.
• Voltage versatility: The 600 V rating expands compatibility with a wide range of medium- and high-voltage distribution scenarios.
• Reliable replacement option: As a Square D part (HLA36150UA), it aligns with standard panels and removal/replacement workflows, helping maintain electrical system integrity.

Installation and compatibility tips

Before installation, confirm that your panel accepts a 3-pole, 600 V circuit breaker with the HLA series designation. Use appropriate torque specifications and mounting hardware per your panel manufacturer’s guidelines, and verify that the load characteristics align with a 150 A circuit to ensure optimal protection without nuisance trips. This device is intended for use in environments and configurations that match its 150 A, 3-pole, 600 V ratings, delivering dependable overcurrent protection for demanding electrical systems.