1SDA056768R1 ABB E3L2500 PR121/P-LI 2500 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3L2500 PR121/P-LI 1SDA056768R1 Air Circuit Breaker?

The ABB 1SDA056768R1 is a high-performance SACE Emax E3 L withdrawable air circuit breaker (ACB) moving part designed for protection and switching in demanding low-voltage electrical distribution systems. This three-pole breaker combines a 2500 A rated uninterrupted current with the high short-circuit performance of the E3 L platform, making it suitable for high-current industrial, commercial and infrastructure power distribution applications.

The E3L2500 is equipped with an ABB PR121/P-LI R2500 electronic overcurrent release, providing long-time overload and instantaneous short-circuit protection. These L and I protection functions help protect conductors, switchgear and connected equipment against sustained overloads and severe short-circuit faults while providing a straightforward electronic protection solution for high-capacity distribution circuits.

With a 2500 A rating and three-pole withdrawable moving-part construction, the 1SDA056768R1 is designed for use with a compatible SACE Emax fixed part. The E3 L 2500 platform provides a rated ultimate short-circuit breaking capacity of 130 kA at 415 V AC, while the withdrawable arrangement supports efficient isolation, inspection, servicing and replacement within compatible switchgear.

Key Advantages

• High-performance ABB SACE Emax E3 L air circuit breaker moving part for demanding low-voltage distribution systems.
• 2500 A rated uninterrupted current for high-capacity power distribution applications.
• Three-pole withdrawable configuration supports flexible switchboard operation, isolation and maintenance.
• PR121/P-LI R2500 electronic release provides long-time overload and instantaneous short-circuit protection.
• High 130 kA ultimate short-circuit breaking capacity at 415 V AC.
• Withdrawable moving-part construction supports efficient inspection, servicing and replacement within compatible SACE Emax switchgear.

Key Features

• ABB SACE Emax E3 L series.
• 2500 A rated uninterrupted current at 40 °C.
• Three-pole withdrawable air circuit breaker moving part.
• PR121/P-LI R2500 electronic overcurrent release.
• Long-time overload (L) and instantaneous short-circuit (I) protection.
• 130 kA Icu at 415 V AC.
• 15 kA short-time withstand current for 1 s.
• Four auxiliary contacts.
• Open/closed circuit-breaker position indication.
• Withdrawable moving-part construction for compatible SACE Emax fixed parts.
• Designed for high-current industrial and commercial low-voltage power distribution.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3L2500 provide controlled switching and protection for high-current low-voltage distribution circuits. The PR121/P-LI electronic release combines long-time overload and instantaneous short-circuit protection, helping safeguard switchboards, conductors and connected electrical equipment against sustained overcurrents and severe short-circuit faults.

The withdrawable moving-part configuration allows the circuit breaker to be isolated and removed from its compatible fixed part for inspection, servicing or replacement. Combined with the 2500 A current rating, 130 kA breaking capacity at 415 V AC and electronic LI protection, the 1SDA056768R1 is particularly suited to high-capacity switchgear where dependable protection and maintainability are important.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial withdrawable switchboards and switchgear assemblies.
• Manufacturing plants and process facilities.
• Commercial and infrastructure power distribution systems.
• High-current incomer and feeder circuit protection.
• Low-voltage networks requiring electronic overload and instantaneous short-circuit protection.