1SDA056269R1 ABB E3S2000PR122/P-LSIG 2000A 4-Pole Air Circuit Breaker Moving Part

Why Choose the ABB E3S2000PR122/P-LSIG 2000A Air Circuit Breaker?

The ABB E3S2000PR122/P-LSIG is a high-performance 2000 A four-pole air circuit breaker moving part designed for reliable switching and comprehensive overcurrent protection in demanding low-voltage power distribution systems. Part of the established ABB SACE Emax New Emax series, this E3S configuration combines high short-circuit performance with the advanced PR122/P-LSIG electronic overcurrent release.

The PR122/P-LSIG trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. These LSIG protection functions provide comprehensive protection for cables, busbars, switchboards and connected equipment while supporting selective coordination and earth-fault detection within complex electrical distribution networks.

With a rated uninterrupted current of 2000 A, a four-pole withdrawable moving-part configuration and a PR122/P-LSIG R2000 release, ABB order code 1SDA056269R1 is designed for compatible SACE Emax withdrawable switchgear. The moving part is fitted with four change-over auxiliary contacts and circuit-breaker open/closed position indication for integration with monitoring and control systems.

Key Advantages

• High-capacity 2000 A air circuit breaker moving part for demanding low-voltage distribution.
• Four-pole withdrawable configuration suitable for three-phase four-wire systems.
• Advanced PR122/P-LSIG R2000 electronic overcurrent release.
• LSIG functions provide long-time, short-time, instantaneous and earth-fault protection.
• 75 kA rated ultimate short-circuit breaking capacity at 400 V AC.
• Withdrawable construction supports efficient inspection, servicing and breaker replacement.
• Four change-over auxiliary contacts and open/closed indication support remote monitoring and control.

Key Features

• ABB SACE Emax E3S series.
• 2000 A rated uninterrupted current.
• Four-pole circuit-breaker configuration.
• 100% rated fourth pole.
• Withdrawable moving part (WMP).
• PR122/P-LSIG electronic trip unit.
• R2000 overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Integrated earth-fault protection (G).

Comprehensive Protection for High-Current Power Distribution

Air circuit breakers such as the ABB E3S2000 provide switching and overcurrent protection for high-current low-voltage distribution circuits. The electronic trip release continuously monitors circuit conditions and initiates breaker operation when configured protection thresholds are exceeded, helping protect cables, busbars, switchboards and connected equipment against damaging overload, short-circuit and earth-fault currents.

The PR122/P-LSIG release combines four key protection functions within a single electronic trip system. Together with the 2000 A four-pole E3S configuration, 75 kA short-circuit performance at 400 V AC and service-friendly withdrawable construction, this moving part is particularly suitable for critical main distribution and high-current feeder applications requiring integrated earth-fault protection.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Three-phase four-wire distribution networks.
• Manufacturing and process facilities.
• Commercial and infrastructure electrical installations.
• Incoming mains and high-current feeder protection.
• Transformer secondary distribution systems.
• Circuits requiring integrated earth-fault protection.
• Withdrawable ABB SACE Emax switchgear assemblies.