1SDA057021R1 ABB E6H 6300 PR122/P-LSIG 6300A 4-Pole Fixed Air Circuit Breaker

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

The ABB E6H 6300 PR122/P-LSIG, order code 1SDA057021R1, 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 advanced PR122/P electronic protection technology.

The breaker is equipped with a PR122/P-LSIG electronic overcurrent release, providing long-time, short-time, instantaneous and earth-fault protection functions. This comprehensive protection package enables the breaker to respond to overloads, short circuits and earth faults while supporting selective coordination in complex industrial 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-LSIG is engineered for very high-current distribution applications. Its E6H performance class provides a rated short-circuit breaking capacity of 100 kA at 400 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 comprehensive high-current switching and protection.
• PR122/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and earth-fault protection.
• Fixed execution with rear horizontal terminals for permanent switchboard installation.
• 100 kA rated short-circuit breaking capacity at 400 V AC for demanding high-fault-level installations.
• Includes four change-over auxiliary contacts and 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.
• LSIG protection functions: long-time, short-time, instantaneous and earth-fault protection.
• R6300 release rating.
• 690 V AC rated voltage.
• Integrated earth-fault protection and open/closed position indication.

Reliable LSIG 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, short-circuit and earth-fault conditions while providing dependable switching and isolation. The E6 frame is designed for very high-current applications, making this 6300 A fixed configuration suitable for main switchboards, incoming supplies and other critical distribution points.

The PR122/P-LSIG electronic release provides long-time protection against sustained overloads, short-time protection to support selective coordination, instantaneous protection against severe short circuits and earth-fault protection for faults involving current flowing to earth. This combination makes the E6H 6300 suitable for critical electrical systems requiring comprehensive electronic circuit protection.

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 LSIG protection.