1SDA055847R1 ABB E2B2000 PR123/P-LSIG 2000A 3-Pole Withdrawable Air Circuit Breaker Moving Part

Why Choose the ABB E2B2000 PR123/P-LSIG 2000A 3-Pole Withdrawable Air Circuit Breaker?

The ABB 1SDA055847R1 is a high-performance SACE Emax E2B air circuit breaker (ACB) moving part designed for switching and protection in high-current low-voltage electrical distribution systems. Rated at 2000 A, this three-pole withdrawable circuit breaker moving part is equipped with the advanced PR123/P-LSIG R2000 electronic overcurrent release for comprehensive protection of industrial and commercial power networks.

As part of the ABB SACE Emax / New Emax range, the E2B2000 combines robust switching performance with sophisticated electronic protection. The PR123/P-LSIG release provides long-time, short-time, instantaneous and ground-fault protection functions, helping protect cables, busbars, transformers and connected electrical equipment against overloads, short circuits and earth faults.

The E2B2000 PR123/P-LSIG is a three-pole withdrawable moving part with a rated uninterrupted current of 2000 A and a rated operational voltage of 690 V AC. Its E2B performance level provides 42 kA rated ultimate and service short-circuit breaking capacity across its specified AC voltage range up to 690 V, making it suitable for demanding low-voltage switchboards where high-current protection and maintainability are essential.

Key Advantages

• High-capacity 2000 A SACE Emax air circuit breaker moving part.
• Advanced PR123/P-LSIG R2000 electronic overcurrent release.
• LSIG protection provides long-time, short-time, instantaneous and ground-fault protection.
• 42 kA ultimate and service short-circuit breaking capacity up to 690 V AC.
• 42 kA short-time withstand current for both 1 s and 3 s.
• Three-pole withdrawable construction supports maintainable switchboard installations.
• Four auxiliary contacts with circuit-breaker open/closed position indication.
• Designed for integration with the corresponding ABB SACE Emax fixed part.

Key Features

• ABB SACE Emax E2B2000 air circuit breaker moving part.
• 2000 A rated uninterrupted current.
• Three-pole configuration.
• Withdrawable moving-part construction.
• PR123/P-LSIG R2000 electronic overcurrent release.
• Long-time, short-time, instantaneous and ground-fault LSIG protection functions.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 42 kA Icu and Ics at 400 V AC.
• 42 kA Icw for 1 s and 3 s.
• Four auxiliary contacts with open/closed position indication.

Advanced Circuit Protection for High-Current Power Distribution

Air circuit breakers such as the ABB E2B2000 provide switching, isolation and protection for high-current low-voltage distribution circuits. Withdrawable configurations are particularly suitable for critical switchboards because the circuit breaker moving part can be disconnected from its corresponding fixed part, supporting inspection, servicing and replacement within appropriately designed switchgear.

The PR123/P-LSIG electronic release provides comprehensive protection through long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault functions. This combination supports selective protection and coordination throughout electrical distribution networks while providing additional protection against potentially damaging earth-fault conditions.

Typical Applications

• Industrial low-voltage switchboards and distribution panels.
• Main incoming circuit protection.
• High-current feeder protection.
• Withdrawable switchgear assemblies.
• Busbar and bus-coupler applications.
• Transformer secondary distribution systems.
• Manufacturing and process plants.
• Commercial, infrastructure and utility power distribution.