1SDA058051R1 ABB E6H-A 5000 PR122/P-LI 5000 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E6H-A 5000 PR122/P-LI Air Circuit Breaker?

The ABB 1SDA058051R1 is a high-performance SACE Emax E6H-A 5000 air circuit breaker (ACB) designed for protection and switching of very high-current low-voltage electrical distribution systems. Part of the ABB New Emax range, this fixed three-pole circuit breaker combines a 5000 A rated current with the electronic PR122/P-LI overcurrent release for dependable overload and instantaneous short-circuit protection.

The E6H-A performance level is engineered for demanding industrial and commercial power distribution applications requiring high current capacity, robust fault interruption and reliable switching. Its PR122/P electronic trip unit provides Long-time and Instantaneous protection functions, identified by the LI designation, helping protect conductors, busbars, switchgear and connected equipment against sustained overloads and severe short-circuit faults.

With a 5000 A frame size, three-pole configuration and 85 kA short-circuit rating at 480 V AC, the E6H-A 5000 is suited to major low-voltage distribution installations. ABB order code 1SDA058051R1 identifies the fixed version equipped with a PR122/P-LI R5000 electronic overcurrent release, Im 75000 A designation and horizontal rear terminals.

Key Advantages

• High-capacity ABB SACE Emax air circuit breaker for low-voltage power distribution.
• 5000 A rated current for very high-current industrial and commercial installations.
• 85 kA short-circuit rating at 480 V AC for demanding distribution systems.
• Electronic PR122/P-LI overcurrent release for dependable circuit protection.
• LI protection provides Long-time and Instantaneous protection functions.
• Fixed three-pole construction with horizontal rear terminals for switchboard installation.

Key Features

• ABB SACE New Emax E6H-A series.
• 5000 A rated current and frame size.
• Three-pole configuration.
• PR122/P electronic overcurrent release.
• LI protection functions for Long-time overload and Instantaneous short-circuit protection.
• R5000 release rating.
• Im 75000 A designation.
• 85 kA short-circuit rating at 480 V AC.
• 100 kA short-time current rating.
• Fixed circuit breaker construction.
• Horizontal rear terminals for power connections.
• UL version for compatible low-voltage power distribution systems.

Reliable Circuit Protection for Very High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6H-A protect low-voltage distribution systems against damaging overcurrents while providing controlled switching of very high-current electrical circuits. The E6 frame is particularly suited to major switchboards, main incomers, large feeder circuits and other installations where substantial continuous-current and fault-current capabilities are required.

The PR122/P-LI electronic trip unit provides Long-time and Instantaneous protection. Long-time protection responds to sustained overload conditions that could cause excessive heating of conductors and equipment, while Instantaneous protection provides rapid intervention during severe short-circuit conditions. This combination provides straightforward protection for high-capacity distribution circuits where LI functionality is specified.

Typical Applications

• Main incoming circuit protection in high-capacity low-voltage switchboards.
• Industrial power distribution systems.
• High-current feeder and busbar protection.
• Large manufacturing and process facilities.
• Utility and infrastructure electrical distribution.
• Large commercial buildings and critical power installations.