Square D HJA36150U31XYP 150A 3P 600V Circuit Breaker | AmpState

The Square D HJA36150U31XYP 150A 3P 600V circuit breaker is engineered for reliable protection in panelboards, load centers, and comprehensive electrical distribution systems. Built by a trusted brand, this unit is a practical choice for retrofit work and maintenance planning where keeping the exact part number is important for compliance and consistency.

• Amperage: 150 A
• Poles: 3
• Voltage rating: 600V
• Manufacturer: Square D
• Part number: HJA36150U31XYP
• Availability: Available from AmpState

Designed to integrate seamlessly in three-phase electrical layouts, this breaker helps protect circuits in commercial and industrial environments where high-load distribution is common. The 3-pole configuration supports coordinated protection across multiple phases, while the 600V rating provides the capacity needed for demanding distribution panels.

What sets this unit apart is its focus on practical compatibility and long-term serviceability. It’s not just a drop-in replacement; it’s a solution that supports maintenance planning by preserving a consistent part number across upgrades and service intervals. This minimizes downtime and simplifies inventory management in facilities with standardized electrical components.

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Ideal for facilities undergoing panel modernization, retrofits, or ongoing distribution-system maintenance, the Square D HJA36150U31XYP provides dependable protection without sacrificing system continuity. Plan smarter with a component that aligns with your existing Square D infrastructure and your maintenance schedules.