Square D HLA36150U31XAABCSH 150A 3-Pole 600 V Circuit Breaker

Meet the Square D HLA36150U31XAABCSH 150A 3-Pole 600 V Circuit Breaker—a dependable solution for protecting three-phase electrical systems in demanding commercial and industrial environments. With a 150 amp current rating, a three-pole design, and a 600-volt maximum, this breaker delivers precise protection for your most important equipment while helping to keep downtime to a minimum. The exact part number, HLA36150U31XAABCSH, ensures you’re selecting the correct replacement for existing Square D installations and gear.

Key specifications

• Brand: Square D
• Part Number: HLA36150U31XAABCSH
• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V

Ideal applications

This 150 A, 3-pole, 600 V circuit breaker is suited for three-phase power distribution across commercial facilities, industrial equipment rooms, and motor control setups. Use it to protect feeders that run large motors, compressors, pumps, and other heavy loads where reliable trip performance is crucial. Its Square D lineage is a trusted choice for facilities already built around this ecosystem, ensuring cohesive protection and easier maintenance.

What sets it apart

• Three-pole protection: Efficiently guards all phases of a three-phase circuit, reducing unbalanced loading and providing coordinated protection across the system.
• Clear, decisive overcurrent protection: Designed to interrupt excessive current quickly and predictably, helping prevent equipment damage and electrical fires.
• Trusted Square D build quality: Built to withstand the rigors of busy electrical rooms and to align with existing Square D components for straightforward replacements.

Installation and compatibility notes

• Designed for use in systems requiring a 150 A, 3-pole, 600 V protection device.
• Verify the part number matches your existing panel or gear and that the current and voltage ratings align with your circuit requirements.
• Follow applicable electrical codes and safety practices during installation and maintenance.

Practical insights and use cases

In facilities with large motors, pumps, or HVAC systems, this breaker provides robust protection for feeders and distribution branches. It’s a solid retrofit option when upgrading older gear or expanding a three-phase distribution network, helping maintain system reliability without compromising safety. For engineers and electricians, choosing the exact Square D HLA36150U31XAABCSH part streamlines planning, reduces mismatch risk, and supports consistent performance across the electrical infrastructure.