1SDA056751R1 ABB E3L2000 PR123/P-LSIG 2000 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3L2000 PR123/P-LSIG 1SDA056751R1 Air Circuit Breaker?

The ABB 1SDA056751R1 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 four-pole breaker combines a 2000 A rated current with advanced electronic protection, making it suitable for industrial, commercial and infrastructure power distribution applications.

The E3L2000 is equipped with an ABB PR123/P-LSIG R2000 electronic overcurrent release, providing long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. These L, S, I and G protection functions provide comprehensive protection against overloads, short circuits and earth faults while supporting selective coordination within complex electrical distribution networks.

With a 2000 A rating, four-pole construction and withdrawable moving-part configuration, the 1SDA056751R1 is designed for use with a compatible SACE Emax fixed part. Its combination of advanced PR123/P protection and withdrawable construction supports high-capacity switchgear installations where dependable protection, maintainability and efficient circuit-breaker replacement are important.

Key Advantages

• High-performance ABB SACE Emax E3 L air circuit breaker moving part for demanding low-voltage distribution systems.
• 2000 A rated current for high-current power distribution applications.
• Four-pole withdrawable configuration supports switching and protection across four conductors.
• PR123/P-LSIG R2000 electronic release provides long-time, short-time, instantaneous and earth-fault protection.
• Integrated earth-fault protection provides an additional layer of protection for critical electrical distribution networks.
• Withdrawable moving-part construction supports efficient isolation, servicing and replacement within compatible SACE Emax switchgear.

Key Features

• ABB SACE Emax E3 L series.
• 2000 A rated current.
• Four-pole withdrawable air circuit breaker moving part.
• PR123/P-LSIG R2000 electronic overcurrent release.
• Long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection.
• Short-time protection supports selective coordination between upstream and downstream protective devices.
• Integrated earth-fault protection.
• 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.

Advanced 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 PR123/P-LSIG electronic release combines long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection, helping safeguard switchboards, conductors and connected electrical equipment against a broad range of damaging electrical faults.

The short-time protection function supports selective coordination between upstream and downstream protective devices, while the earth-fault function provides additional protection against ground-fault conditions. Combined with its 2000 A rating, four-pole arrangement and withdrawable moving-part construction, the 1SDA056751R1 is particularly suited to high-capacity switchgear where dependable protection, system availability 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.
• Four-pole electrical networks requiring selective short-circuit and earth-fault protection.