1SDA057387R1 ABB E3N-A 2000 PR122/P-LSIG 2000 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA057387R1 E3N-A 2000 Air Circuit Breaker?

The ABB 1SDA057387R1 is a SACE Emax E3N-A air circuit breaker designed for protection and switching in demanding low-voltage power distribution systems. Identified as E3N-A 2000 PR122/P-LSIG In=2000A 3p F HR, this three-pole fixed breaker combines a 2000 A rated current with the ABB PR122/P-LSIG electronic overcurrent release.

As part of the ABB SACE Emax E3 platform, this UL 1066 breaker is designed for industrial, commercial and infrastructure installations requiring dependable high-current circuit protection. Its fixed construction and rear flat horizontal terminals provide a robust arrangement for permanent installation within compatible low-voltage switchgear.

The integrated PR122/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection. The breaker is also fitted with four auxiliary contacts and open/closed position indication, supporting status signalling and integration with switchboard monitoring and control systems.

Key Advantages

• Genuine ABB SACE Emax E3N-A air circuit breaker.
• 2000 A rated current for demanding low-voltage distribution loads.
• PR122/P-LSIG electronic overcurrent release for comprehensive circuit protection.
• LSIG protection provides long-time, short-time, instantaneous and ground-fault functions.
• Three-pole fixed configuration for three-phase electrical distribution systems.
• Rear flat horizontal terminals for integration into compatible switchgear.
• Four auxiliary contacts support breaker status signalling and control integration.
• UL 1066 construction for applicable low-voltage power circuit breaker installations.

Key Features

• ABB SACE Emax E3N-A 2000 air circuit breaker platform.
• 2000 A rated current.
• 600 V rated voltage.
• Three-pole configuration.
• Fixed circuit breaker construction.
• Rear flat horizontal terminals.
• PR122/P-LSIG electronic overcurrent release.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated ground-fault protection.
• R2000 overcurrent release rating.
• Im 30000 A instantaneous reference.
• Four auxiliary contacts with circuit breaker open/closed position indication.
• Rated service short-circuit breaking capacity up to 65 kA.

Comprehensive LSIG Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3N-A are used to switch and protect substantial low-voltage electrical loads. When abnormal current conditions occur, the electronic trip unit evaluates the fault against its configured protection settings and initiates circuit interruption when required, helping safeguard switchgear, conductors, transformers, generators and connected electrical equipment.

The PR122/P-LSIG release provides four principal protection functions. Long-time protection responds to sustained overload conditions, short-time protection supports controlled short-circuit response and selective coordination, instantaneous protection provides rapid interruption during severe short circuits, and ground-fault protection detects potentially damaging current flowing to earth.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process facilities.
• Commercial building electrical distribution.
• Infrastructure and utility power systems.
• Transformer secondary distribution.
• Generator distribution and protection systems.
• Switchgear requiring a 2000 A three-pole fixed air circuit breaker with LSIG electronic protection.