1SDA057427R1 ABB E3N-A 2500 PR123/P-LSIG 2500 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA057427R1 E3N-A 2500 Air Circuit Breaker?

The ABB 1SDA057427R1 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 2500 PR123/P-LSIG In=2500A 3p F HR, this three-pole fixed breaker combines a 2500 A rated current with the advanced ABB PR123/P-LSIG electronic overcurrent release.

As part of the ABB SACE Emax E3 platform, this N-performance UL configuration is intended for industrial, commercial and infrastructure installations requiring dependable high-current circuit protection. Its fixed execution with rear horizontal terminals provides a robust arrangement for permanent integration into compatible low-voltage switchgear.

The integrated PR123/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection together with advanced measurement and monitoring capabilities. With an R2500 release rating and Im 37500 A instantaneous reference, the breaker is designed to provide comprehensive electronic protection for substantial distribution loads.

Key Advantages

• Genuine ABB SACE Emax E3N-A air circuit breaker.
• 2500 A rated current for demanding low-voltage distribution loads.
• PR123/P-LSIG electronic overcurrent release for advanced 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 horizontal terminals for integration into compatible switchgear.
• R2500 release rating with an Im 37500 A instantaneous reference.
• PR123/P platform provides advanced protection, measurement and monitoring functionality.

Key Features

• ABB SACE Emax E3N-A 2500 air circuit breaker platform.
• 2500 A rated current.
• Three-pole configuration.
• Fixed circuit breaker construction.
• Rear horizontal terminals.
• PR123/P-LSIG electronic overcurrent release.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated ground-fault protection.
• R2500 overcurrent release rating.
• Im 37500 A instantaneous reference.
• N-performance E3 frame configuration.
• Advanced electrical measurement and monitoring through the PR123/P platform.
• UL-oriented configuration for applicable low-voltage power distribution installations.

Advanced 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 PR123/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. The advanced PR123/P platform also adds measurement and monitoring functionality for greater visibility of electrical system operating conditions.

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 2500 A three-pole fixed air circuit breaker with advanced LSIG electronic protection.