1SDA055927R1 ABB E2N 2000 PR123/P-LSIG 2000 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E2N 2000 PR123/P-LSIG 1SDA055927R1 Air Circuit Breaker?

The ABB 1SDA055927R1 is a high-performance SACE Emax E2N 2000 air circuit breaker (ACB) designed for reliable protection, switching and isolation in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax E2 series, this three-pole fixed circuit breaker is equipped with the advanced PR123/P-LSIG electronic overcurrent release.

With a rated current of 2000 A, the E2N 2000 is suitable for main distribution boards, industrial switchgear, transformer protection and other high-current applications. The PR123/P-LSIG trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection, giving comprehensive protection against common electrical fault conditions.

The E2N performance level provides a rated ultimate short-circuit breaking capacity of 65 kA at 400–415 V AC. This version is supplied as a three-pole fixed circuit breaker with rear horizontal terminals and includes four auxiliary contacts together with open/closed position indication for integration into electrical distribution and monitoring systems.

Key Advantages

• Heavy-duty 2000 A air circuit breaker for high-current power distribution.
• 65 kA ultimate short-circuit breaking capacity at 400–415 V AC.
• Advanced PR123/P-LSIG electronic overcurrent release.
• LSIG functionality provides overload, short-time, instantaneous and earth-fault protection.
• Three-pole fixed configuration for permanent switchboard installations.
• Rear horizontal terminals provide practical connection within low-voltage switchgear.
• Part of the proven ABB SACE Emax E2N circuit breaker platform.

Key Features

• ABB SACE Emax E2N 2000 series.
• 2000 A rated current.
• Three-pole configuration.
• Fixed execution.
• Rear horizontal terminals.
• PR123/P-LSIG electronic trip unit.
• Long-time overload protection.
• Short-time and instantaneous short-circuit protection.
• Integrated earth-fault protection.
• 65 kA Icu at 400–415 V AC.
• Four auxiliary contacts fitted.
• Open/closed position indication.

Advanced Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E2N provide switching, isolation and protection for high-current low-voltage distribution circuits. Their high breaking capacity makes them particularly suitable for main switchboards and industrial installations where dependable interruption of substantial fault currents is essential.

The PR123/P-LSIG electronic trip unit provides comprehensive LSIG protection, monitoring the circuit for overload, delayed short-circuit, instantaneous short-circuit and earth-fault conditions. This combination of advanced electronic protection and robust Emax construction makes the 1SDA055927R1 suitable for critical electrical distribution applications requiring reliable and configurable circuit protection.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Transformer protection and distribution.
• Generator and utility distribution systems.
• Manufacturing and process plant switchgear.
• Commercial building electrical infrastructure.
• Data centre and critical power distribution systems.