1SDA056139R1 ABB E3N2500 PR122/P-LI 2500A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3N2500 PR122/P-LI 2500A 4-Pole Air Circuit Breaker?

The ABB E3N2500 PR122/P-LI, order code 1SDA056139R1, 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 four-pole withdrawable breaker combines a 2500 A rated uninterrupted current with the advanced PR122/P-LI electronic overcurrent release.

The PR122/P-LI trip unit provides long-time overload and instantaneous short-circuit protection. The PR122/P platform is a high-performance electronic protection unit for ABB Emax circuit breakers, providing protection and measurement functionality for demanding industrial and commercial electrical distribution applications.

With a 2500 A rated current, four-pole configuration and withdrawable moving-part construction, the E3N2500 is well suited to main switchboards and high-current distribution systems where maintainability and dependable fault protection are required. The E3N performance level provides a rated ultimate short-circuit breaking capacity of 65 kA at 415 V AC and a rated short-time withstand current of 65 kA for 1 s.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker moving part for low-voltage power distribution.
• 2500 A rated uninterrupted current for demanding high-current installations.
• Four-pole configuration suitable for three-phase systems requiring neutral switching.
• Advanced PR122/P-LI electronic overcurrent release.
• Long-time overload and instantaneous short-circuit protection.
• 65 kA ultimate short-circuit breaking capacity at 415 V AC.
• Withdrawable construction facilitates inspection, servicing and replacement.

Key Features

• ABB SACE Emax E3N2500 air circuit breaker moving part.
• 2500 A rated uninterrupted current.
• Four-pole (4P) configuration.
• PR122/P-LI electronic overcurrent release.
• Long-time overload protection (L).
• Instantaneous short-circuit protection (I).
• Withdrawable (W) execution.
• Moving part (MP) for the withdrawable Emax circuit-breaker system.
• 65 kA rated ultimate short-circuit breaking capacity at 415 V AC.
• 65 kA rated short-time withstand current for 1 s.
• Designed for high-current low-voltage electrical distribution systems.

Reliable Circuit Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3N2500 provide switching, isolation and overcurrent protection for high-current low-voltage distribution circuits. The electronic trip unit monitors current conditions and initiates circuit-breaker operation when configured protection thresholds are exceeded, helping protect cables, switchgear and connected electrical equipment from damaging faults.

The PR122/P-LI release provides long-time and instantaneous protection functions for dependable circuit protection. Long-time protection responds to sustained overload conditions, while instantaneous protection provides rapid operation in response to severe short-circuit currents, making this configuration suitable for electrical networks where LI protection is required.

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.