1SDA056772R1 ABB E3L2500PR122/P-LSI 2500A 3-Pole Air Circuit Breaker Moving Part

Why Choose the ABB E3L2500PR122/P-LSI 2500A Air Circuit Breaker?

The ABB E3L2500PR122/P-LSI, order code 1SDA056772R1, is a high-performance 2500 A three-pole air circuit breaker moving part designed for reliable protection and switching in demanding low-voltage electrical distribution systems. As part of the proven ABB SACE Emax E3 series, this withdrawable configuration combines the E3L high-breaking-capacity platform with the advanced PR122/P electronic overcurrent protection release.

The breaker is equipped with an ABB PR122/P-LSI R2500 electronic overcurrent release, providing long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. These LSI protection functions support effective coordination of high-current distribution circuits while protecting cables, busbars, transformers and downstream electrical equipment against damaging overcurrents.

With a rated current of 2500 A, a three-pole configuration and a withdrawable moving-part design, the E3L2500PR122/P-LSI is engineered for installations where maintainability, protection selectivity and service continuity are important. The E3L 25 platform provides an ultimate short-circuit breaking capacity of 130 kA at 415 V AC, while the breaker moving part is fitted with four auxiliary contacts and open/closed position indication.

Key Advantages

• High-capacity 2500 A air circuit breaker moving part for demanding low-voltage power distribution.
• Three-pole withdrawable configuration supports convenient servicing, inspection and replacement.
• Advanced PR122/P-LSI R2500 electronic protection release.
• Long-time, short-time and instantaneous protection supports effective selective coordination.
• High 130 kA ultimate short-circuit breaking capacity at 415 V AC.
• Fitted with four auxiliary contacts for breaker status and control circuits.
• Integrated open/closed position indication supports monitoring and signalling.
• Part of the established ABB SACE Emax air circuit breaker platform.

Key Features

• ABB SACE Emax E3L 25 air circuit breaker platform.
• 2500 A rated uninterrupted current.
• Three-pole construction.
• Withdrawable moving part (W MP) configuration.
• PR122/P-LSI R2500 electronic overcurrent release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• 690 V AC rated voltage.
• 130 kA Icu at 400/415 V AC.
• 15 kA rated short-time withstand current for 1 s for the E3L 25 frame.
• 1000–2500 A overload adjustment range.
• Four auxiliary contacts for signalling and control.
• Breaker open/closed position indication.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3 protect low-voltage electrical networks against damaging overcurrents while providing dependable switching and isolation of high-current circuits. Their robust construction, high breaking performance and electronic protection technology make them particularly suitable for main incomers, transformer secondaries, large feeders and other critical distribution circuits.

The PR122/P electronic release monitors circuit current and initiates breaker operation when configured protection thresholds are exceeded. In this LSI configuration, long-time protection responds to sustained overloads, short-time protection enables coordinated response to short-circuit conditions, and instantaneous protection provides rapid interruption of severe faults.

Typical Applications

• Main low-voltage switchboards and distribution boards.
• Industrial power distribution systems.
• Transformer secondary and main incomer protection.
• High-current feeder circuits requiring selective protection.
• Manufacturing and process plant electrical systems.
• Commercial buildings and infrastructure power distribution.