ABB PR122 P LSI 2000A 635V Air Circuit Breaker For Industrial And Commercial Power Distribution

Meet the ABB PR122/P-LSI 2000A, 635V Air Circuit Breaker — a rugged, high-capacity protection and switching solution designed for modern industrial and commercial power distribution. Built to safeguard low-voltage networks, this breaker delivers dependable performance where uptime is non-negotiable.

Designed for main incoming feeders, switchboards, and critical distribution paths, the PR122/P-LSI provides adjustable trip settings that let you tailor protection to your unique system. This means you can optimize coordination with upstream devices, reduce nuisance trips, and protect valuable equipment without sacrificing speed when faults occur. Its air-break design delivers rapid, reliable interruption of fault currents, helping limit arc energy and downstream damage in demanding environments.

Key benefits

• High-capacity protection: 2000A current rating handles large feeders and heavy loads typical of industrial facilities.
• 635V nominal rating: Compatibility with common low-voltage distribution networks used in commercial and industrial settings.
• Adjustable trip settings: Flexible coordination to match protective schemes and minimize unplanned outages.
• Robust interruption performance: Fast, reliable fault clearing to protect downstream equipment and maintain process continuity.
• Engineered for reliability: A trusted ABB air circuit breaker solution designed for harsh environments and long service life.

Ideal use scenarios

Use the ABB PR122/P-LSI in applications where dependable LV protection is critical: main incoming feeders feeding large switchboards, data centers, manufacturing plants, large office campuses, and other facilities with high electrical demand and essential loads requiring precise protection and quick fault clearance.

Why this breaker fits your power distribution strategy

Unlike generic protective devices, the PR122/P-LSI integrates with ABB’s protection philosophy, offering adjustable coordination that enhances system reliability and minimizes downtime. Its strength lies in combining substantial current handling with practical configurability, enabling you to design a protective scheme that aligns with your operational priorities and safety requirements. For engineers seeking a proven, durable solution for low-voltage protection and switching in demanding environments, this breaker delivers clarity, control, and confidence.