1SDA057002R1 ABB E6H5000PR121/P-LSIG 5000 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E6H5000PR121/P-LSIG 5000 A Air Circuit Breaker?

The ABB E6H5000PR121/P-LSIG, order code 1SDA057002R1, is a high-capacity SACE Emax E6 H air circuit breaker moving part designed for protection, switching and isolation in demanding low-voltage power distribution systems. Rated at 5000 A, this four-pole withdrawable breaker combines the robust E6 frame with ABB's PR121/P-LSIG electronic overcurrent release.

As part of the ABB SACE Emax range, the breaker is engineered for industrial switchboards, power distribution centres and infrastructure applications requiring dependable high-current circuit protection. The PR121/P trip unit provides LSIG protection functions covering long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.

This configuration is a four-pole withdrawable moving part with a rated current of 5000 A. Its draw-out construction supports efficient inspection and maintenance in compatible Emax switchgear while providing the high current-carrying and fault-interruption performance required by major low-voltage distribution systems.

Key Advantages

• High-capacity 5000 A SACE Emax air circuit breaker for demanding power distribution systems.
• E6 H high-performance breaker platform for industrial low-voltage installations.
• PR121/P-LSIG electronic overcurrent release for comprehensive circuit protection.
• LSIG protection functions cover overload, short-circuit, instantaneous and earth-fault conditions.
• Four-pole withdrawable configuration supports maintainable high-current switchboard installations.
• Draw-out design allows the moving part to be disconnected and removed from its compatible fixed part for servicing.
• Suitable for major incoming, feeder and distribution protection duties.
• ABB SACE Emax construction provides dependable operation in demanding electrical distribution environments.

Key Features

• ABB SACE Emax E6 H series.
• 5000 A rated current.
• Four-pole configuration.
• Withdrawable moving part execution.
• PR121/P-LSIG electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Earth-fault protection (G).
• E6 H high breaking-performance class.
• Designed for high-current low-voltage switchboards and power distribution systems.
• Withdrawable construction facilitates maintenance and switchgear service operations.

Advanced Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6 are designed to protect high-current low-voltage distribution systems against overloads, short circuits and other electrical faults. The E6 frame provides the current-carrying capacity required for major incoming feeders, main distribution boards and critical electrical infrastructure where reliable interruption and isolation are essential.

The PR121/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. This combination enables comprehensive protection of conductors, busbars and connected equipment while supporting coordinated protection strategies across industrial and infrastructure power distribution networks.

Typical Applications

• Main incoming protection for high-current low-voltage switchboards.
• Industrial power distribution systems.
• Manufacturing and process plant electrical infrastructure.
• Power distribution centres and main switchboards.
• Transformer secondary and distribution applications.
• Commercial and infrastructure electrical installations.
• Critical power and large-scale electrical distribution networks.