1SDA056724R1 ABB E3L2000 PR122/P-LSI 2000 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E3L2000 PR122/P-LSI 1SDA056724R1 Air Circuit Breaker?

The ABB 1SDA056724R1 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 2000 A rated uninterrupted current with electronic overcurrent protection, making it suitable for industrial, commercial and infrastructure power distribution applications.

The E3L2000 is equipped with an ABB PR122/P-LSI R2000 electronic overcurrent release, providing long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. These L, S and I functions provide comprehensive overcurrent protection while allowing selective coordination between upstream and downstream protective devices in complex electrical distribution networks.

With a 2000 A rating, three-pole fixed construction and rear horizontal terminals, the 1SDA056724R1 is designed for permanent integration into compatible SACE Emax low-voltage switchboards. Its E3 L performance class provides a rated ultimate short-circuit breaking capacity of 130 kA at 400 V AC, making it suitable for installations with high prospective fault currents.

Key Advantages

• High-performance ABB SACE Emax E3 L air circuit breaker for demanding low-voltage distribution systems.
• 2000 A rated uninterrupted current for high-current power distribution applications.
• Three-pole fixed configuration with rear horizontal terminals for permanent switchboard integration.
• PR122/P-LSI R2000 electronic release provides long-time, short-time and instantaneous overcurrent protection.
• High 130 kA ultimate short-circuit breaking capacity at 400 V AC.
• Short-time protection supports selective coordination between protective devices to improve distribution-system continuity.

Key Features

• ABB SACE Emax E3 L series.
• 2000 A rated uninterrupted current.
• Three-pole fixed air circuit breaker.
• PR122/P-LSI R2000 electronic overcurrent release.
• Long-time overload (L), short-time delayed short-circuit (S) and instantaneous short-circuit (I) protection.
• 690 V rated voltage.
• 130 kA Icu at 400 V AC.
• 800–2000 A overload release setting range.
• 3000–30000 A instantaneous short-circuit release setting range.
• Rear horizontal terminals.
• Four auxiliary changeover contacts.
• Open/closed circuit-breaker position indication.
• Optional motor operating mechanism for automated switching applications.

Selective Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3L2000 provide controlled switching and protection for high-current low-voltage distribution circuits. The PR122/P-LSI electronic release combines long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection, helping safeguard switchboards, conductors and connected electrical equipment against sustained overcurrents and severe short-circuit faults.

The short-time protection function is particularly valuable where selective coordination between upstream and downstream protective devices is required, helping isolate a fault as close as practical to the affected circuit. Combined with its 2000 A rating, fixed rear-horizontal-terminal construction and high E3 L breaking performance, the 1SDA056724R1 is well suited to high-capacity switchboards where dependable protection and continuity of supply are important.

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.
• Electrical networks requiring selective short-circuit protection.