1SDA057020R1 ABB E6H 6300 PR122/P-LSI 6300A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E6H 6300 PR122/P-LSI 6300A 4-Pole Fixed Air Circuit Breaker?

The ABB E6H 6300 PR122/P-LSI, order code 1SDA057020R1, is a high-capacity SACE Emax air circuit breaker designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax E6H series, this configuration combines a 6300 A rated current, four-pole construction and fixed execution with ABB's PR122/P electronic protection technology.

The breaker is equipped with a PR122/P-LSI electronic overcurrent release, providing long-time, short-time and instantaneous protection functions. These functions provide dependable protection against sustained overloads and short-circuit conditions while supporting selective coordination in major industrial, commercial and infrastructure power distribution networks.

With a rated current of 6300 A, a four-pole configuration and fixed construction with rear horizontal terminals, the E6H 6300 PR122/P-LSI is engineered for very high-current distribution applications. Its E6H performance class provides 100 kA short-circuit breaking capability across system voltages up to 690 V AC, making it suitable for critical main switchboards and high-capacity power distribution systems.

Key Advantages

• Very high-capacity 6300 A SACE Emax air circuit breaker for major low-voltage distribution systems.
• Four-pole construction for high-current switching and circuit protection.
• PR122/P-LSI electronic trip unit provides long-time, short-time and instantaneous protection.
• Fixed execution with rear horizontal terminals for permanent switchboard installation.
• 100 kA ultimate and service short-circuit breaking capacity up to 690 V AC.
• Supplied with four auxiliary contacts for open/closed circuit-breaker position indication.

Key Features

• ABB SACE Emax E6H series.
• 6300 A rated current.
• Four-pole configuration.
• Fixed circuit-breaker execution.
• Rear horizontal terminals.
• PR122/P electronic overcurrent release.
• LSI protection functions: long-time, short-time and instantaneous.
• 690 V AC rated operational voltage.
• 100 kA rated ultimate and service short-circuit breaking capacity at 400 V AC.
• 100 kA short-time withstand current for 1 s.

Reliable LSI Protection for Very High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6H protect major low-voltage distribution circuits against overload and short-circuit conditions while providing dependable switching and isolation. The E6 frame is designed for very high-current installations, making this 6300 A fixed configuration particularly suitable for main switchboards, incoming supplies and other critical distribution points.

The PR122/P-LSI electronic release provides long-time protection against sustained overloads, short-time protection to support selective coordination and instantaneous protection against severe short circuits. Combined with the E6H breaker's high short-circuit performance, these functions provide robust protection for demanding industrial and infrastructure power systems.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial manufacturing and process plants.
• High-current incomer and feeder protection.
• Power generation and infrastructure installations.
• Large commercial and industrial main distribution systems.
• High-capacity fixed switchgear requiring electronic LSI protection.