Square D HLA36150U31XAABCSDYP 150A 3-Pole 600 V Circuit Breaker

Meet the Square D HLA36150U31XAABCSDYP 150A 3-Pole 600 V Circuit Breaker—a rugged, three-phase protection device designed for demanding electrical environments. With a 150-amp current rating and a 600-volt maximum, this breaker safeguards three-phase circuits, helping you prevent overloads and short circuits while keeping downtime to a minimum.

• Three-pole protection for balanced across all phases: Ideal for three-phase feeders and equipment in industrial and commercial setups, ensuring synchronized interruption across every leg.
• 600 V voltage rating: Built to handle higher-voltage distribution networks common in commercial buildings and industrial facilities, delivering reliable performance under demanding conditions.
• Precise, dependable trip performance: Engineered for consistent response to overloads, helping protect wiring, motors, and downstream devices from damage.
• Easy replacement within Square D ecosystems: Designed to fit compatible Square D panels and enclosures, simplifying maintenance and reducing installation downtime.
• Clear identification and compatibility: Part number HLA36150U31XAABCSDYP ensures you’re selecting the exact component for your system, supporting accurate ordering and replacement.
• Durable, industrial-grade construction: Built to endure the rigors of busy electrical rooms and long service life in challenging environments.

This breaker is ideal for facilities that rely on three-phase power—manufacturing floors, large offices with heavy HVAC loads, and other commercial or light industrial applications where reliable protection and quick fault interruption matter. It serves as a robust main or branch protection option for 150A circuits, offering a straightforward upgrade path from lower-rated devices in compatible panels.

Use cases and practical considerations

• Install as a 150A main breaker or as a protective leg in three-phase distribution to safeguard feeders and equipment.
• Choose when upgrading from lower-capacity breakers to support increased load demands in a three-phase system.
• Pair with compatible Square D panel boards and enclosures to maintain system integrity and streamline maintenance.

Specifications at a glance

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HLA36150U31XAABCSDYP
• Brand: Square D