Square D HDA36150U31XAABCSDYP 150A 3-Pole 600 V Circuit Breaker

Square D HDA36150U31XAABCSDYP is a robust 150 A, 3-pole circuit breaker crafted for reliable protection of three-phase power in commercial and industrial environments. Designed to interrupt fault currents promptly in systems up to 600 V, this part ensures safe operation and swift fault isolation for critical equipment and distribution networks.

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Compatibility: engineered for Square D panels and enclosures that accept HDA-series breakers

Why this 3-pole design matters

In three-phase installations, a true three-pole breaker trips all phases together. This coordinated protection prevents imbalanced loads that can stress motors, transformers, and feeders, helping to reduce equipment wear and downtime. The 150 A rating fits feeders and larger branch circuits, offering strong protection without unnecessary interruptions for normal load conditions.

Ideal use cases

• Three-phase motor circuits for pumps, conveyors, and compressors in manufacturing settings
• HVAC equipment and large distributed loads in commercial facilities
• Power distribution feeders within panels and enclosures designed for HDA-series breakers

Installation and practical considerations

For safety and reliability, installation should be performed by a qualified electrician in accordance with local electrical codes. Verify panel compatibility with HDA-series breakers, ensure secure electrical connections, and follow standard maintenance practices—checking for signs of overheating, wear, or abnormal tripping behavior during service checks.

What makes it stand out

This breaker combines precise three-pole protection with a 600 V rating, making it a solid choice for higher-voltage, three-phase distribution needs. By choosing a dedicated Square D component within compatible panels, you gain consistent performance, straightforward replacement, and cohesive system operation across your electrical infrastructure.