1SDA056292R1 ABB E3S2500 PR122/P-LSI 2500A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3S2500 PR122/P-LSI 2500A 3-Pole Air Circuit Breaker?

The ABB E3S2500 PR122/P-LSI, order code 1SDA056292R1, is a high-performance SACE Emax air circuit breaker (ACB) moving part designed for switching and protection in high-current low-voltage electrical distribution systems. As part of the ABB SACE Emax E3 series, this three-pole withdrawable breaker combines a 2500 A rated current with the PR122/P-LSI electronic overcurrent release.

The PR122/P-LSI trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. This LSI configuration supports effective protection and selective coordination against sustained overloads and short-circuit faults, making the breaker suitable for demanding industrial, commercial and infrastructure power distribution applications.

With a 2500 A rated current, three-pole configuration and withdrawable moving-part construction, the E3S2500 is suitable for main switchboards and high-current distribution systems where maintainability and dependable fault protection are important. The E3S performance level provides high short-circuit interruption capability, while the withdrawable arrangement facilitates inspection, servicing and replacement.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker moving part for low-voltage power distribution.
• 2500 A rated current for demanding high-current installations.
• Three-pole configuration for three-phase electrical distribution systems.
• Advanced PR122/P-LSI electronic overcurrent release.
• Long-time, short-time and instantaneous overcurrent protection.
• E3S high short-circuit performance level for demanding electrical networks.
• Withdrawable construction supports convenient inspection, servicing and replacement.
• Suitable for selective protection and coordination in high-current distribution systems.

Key Features

• ABB SACE Emax E3S2500 air circuit breaker moving part.
• 2500 A rated current.
• Three-pole (3P) configuration.
• PR122/P-LSI electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Withdrawable (W) execution.
• Moving part (MP) for the withdrawable SACE Emax system.
• Electronic protection suitable for coordinated low-voltage distribution networks.
• Designed for high-current industrial and commercial switchboards.

Reliable Circuit Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3S2500 provide switching, isolation and overcurrent protection for high-current low-voltage distribution circuits. The electronic trip unit monitors electrical current and initiates circuit-breaker operation when configured protection thresholds are exceeded, helping protect cables, switchgear and connected equipment from damaging electrical faults.

The PR122/P-LSI release provides three levels of overcurrent protection for effective coordination within electrical distribution systems. Long-time protection responds to sustained overloads, short-time protection enables a controlled response to short-circuit conditions for improved selectivity, and instantaneous protection provides rapid interruption of severe short-circuit currents.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical installations.
• Manufacturing and process facilities.
• High-current incomer and feeder protection.
• Transformer and generator distribution systems.