1SDA056752R1 ABB E3L2500 PR121/P-LI 2500 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E3L2500 PR121/P-LI 1SDA056752R1 Air Circuit Breaker?

The ABB 1SDA056752R1 is a high-performance SACE Emax E3 L air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. This three-pole fixed breaker combines a 2500 A rated uninterrupted current with ABB's E3 L performance class, 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 protection solution for high-capacity distribution circuits.

With a 2500 A rating, three-pole fixed construction and rear horizontal terminals, the 1SDA056752R1 is designed for permanent integration into compatible SACE Emax low-voltage switchboards. The E3 L frame provides a rated ultimate short-circuit breaking capacity of 130 kA at 415 V AC, while its fixed construction provides a robust solution for main incomers and high-current feeder circuits.

Key Advantages

• High-performance ABB SACE Emax E3 L air circuit breaker for demanding low-voltage distribution systems.
• 2500 A rated uninterrupted current for high-capacity power distribution applications.
• Three-pole fixed configuration with rear horizontal terminals for permanent switchboard integration.
• 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.
• Four auxiliary contacts and open/closed position indication support switchgear monitoring and control integration.

Key Features

• ABB SACE Emax E3 L series.
• 2500 A rated uninterrupted current.
• Three-pole fixed air circuit breaker.
• 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.
• Rear horizontal terminals for fixed switchboard installation.
• Four auxiliary contacts.
• Open/closed circuit-breaker position indication.
• Fixed construction for permanent integration into compatible SACE Emax switchgear.

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 E3 L performance class combines high interruption capability with a fixed construction suited to permanent switchboard installations. Together with its 2500 A current rating and rear horizontal terminal arrangement, the 1SDA056752R1 provides a robust solution for high-capacity distribution boards where dependable circuit protection and straightforward switchgear integration are required.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial 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.