ABB XT5NU330ABYN000XXX 300A 3P 600V Circuit Breaker | AmpState

Meet the ABB XT5NU330ABYN000XXX, a rugged 300A, three-pole (3P) circuit breaker built for everyday electrical work. Designed for panelboards, load centers, and broad electrical distribution applications, this device delivers dependable overcurrent protection where it matters most. Its form factor and ratings are ideal for projects that demand both reliability and consistency in part numbers.

Distinctive benefits and how they matter

• 300 A current rating for demanding circuits – Safeguards wiring, devices, and I/O loads in commercial and industrial environments while providing clear, predictable trip behavior.
• Three-pole configuration (3P) – Simplifies integration with three-phase systems, ensuring balanced protection across all phases without mismatches.
• 600V maximum voltage – Suitable for standard distribution networks found in many facilities, supporting robust performance under normal and fault conditions.
• Retrofit-friendly with part-number consistency – Precisely engineered to fit existing installations where the part number must remain consistent for scheduling, maintenance planning, and stocking efficiency.
• Versatility across panelboards, load centers, and electrical distribution – A reliable choice whether you’re upgrading, expanding, or maintaining an electrical distribution system.
• Simplified maintenance and inventory management – A stable catalog entry reduces the risk of incompatible replacements and helps streamline procurement during service windows.

Use cases that align with real-world needs

• Retrofit projects in commercial facilities and light industrial plants where keeping the same part number is important for project timelines and warranty considerations.
• Ongoing maintenance planning for critical distribution paths, enabling faster part pulls and fewer project delays.
• New installations in panelboards or load centers that require robust three-phase protection without sacrificing compatibility with existing infrastructure.
• Spare-part strategy for facilities that prioritize reliability and predictable lead times in maintenance cycles.

Who benefits most

• Electrical contractors executing retrofit and modernization projects
• Facility managers overseeing reliability of power distribution systems
• Maintenance teams in manufacturing, data centers, and commercial settings seeking consistent parts for quick replacements

Compatibility and expert support

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit for your exact panelboard or distribution setup. AmpState specializes in pairing the right ABB breakers with your existing infrastructure, helping you avoid downtime and order with confidence.