1SDA056447R1 ABB E3H 2000 PR123/P-LSIG 2000A 4P Fixed Air Circuit Breaker

Why Choose the ABB E3H 2000 PR123/P-LSIG 2000A 4P Fixed Air Circuit Breaker?

The ABB 1SDA056447R1 is a high-performance SACE Emax E3H air circuit breaker designed for switching and protection in demanding low-voltage power distribution systems. Rated at 2000 A, this four-pole fixed circuit breaker incorporates ABB's advanced PR123/P-LSIG R2000 electronic overcurrent release, providing comprehensive protection for high-current industrial, commercial and infrastructure electrical networks.

Part of the ABB SACE Emax E3 series, the E3H 2000 combines a substantial 2000 A current rating with high short-circuit interruption performance. The E3H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 415 V AC, a rated service short-circuit breaking capacity of 85 kA at 415 V AC and strong short-time withstand capability for demanding distribution systems.

The PR123/P-LSIG release provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. This version is a four-pole fixed circuit breaker, providing a robust permanent installation arrangement for compatible low-voltage switchboards where advanced protection and high fault-interruption capability are required.

Key Advantages

• 2000 A SACE Emax air circuit breaker for high-current low-voltage power distribution.
• E3H high-breaking-capacity performance for installations with substantial prospective fault currents.
• Advanced PR123/P-LSIG electronic trip unit provides overload, short-circuit and earth-fault protection.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• 85 kA service short-circuit breaking capacity at 415 V AC.
• 75 kA short-time withstand current for 1 s supports selective protection and coordination.
• 65 kA short-time withstand current for 3 s.
• Four-pole construction with 100% rated fourth pole.
• Fixed construction provides a robust permanent switchboard installation.

Key Features

• ABB SACE Emax E3H 2000 air circuit breaker.
• 2000 A rated current.
• Four-pole configuration.
• 100% rated fourth pole.
• PR123/P-LSIG R2000 electronic overcurrent release.
• LSIG protection: long-time, short-time, instantaneous and earth-fault functions.
• Advanced electronic protection for high-current distribution circuits.
• 100 kA Icu at 415 V AC.
• 85 kA Ics at 415 V AC.
• 75 kA Icw for 1 s.
• 65 kA Icw for 3 s.
• Fixed circuit-breaker construction for permanent switchboard installation.

Advanced PR123/P-LSIG Protection for High-Current Distribution

Air circuit breakers such as the ABB E3H 2000 provide switching, isolation and automatic protection for important low-voltage distribution circuits. The PR123/P electronic overcurrent release monitors electrical conditions and commands the breaker to open when configured overload, short-circuit or earth-fault thresholds are reached, helping protect conductors, busbars, switchgear and connected equipment.

The PR123/P-LSIG release combines long-time, short-time, instantaneous and earth-fault functions for comprehensive protection and coordination within sophisticated electrical networks. Combined with the E3H frame's 100 kA Icu at 415 V AC, 75 kA Icw for 1 s and fixed four-pole construction, the 1SDA056447R1 is particularly suited to permanent switchboard installations requiring advanced electronic protection and dependable 2000 A power distribution.

Typical Applications

• Main incoming protection in low-voltage switchboards.
• Industrial power distribution systems.
• High-fault-level feeder and distribution circuits.
• Manufacturing and process plant electrical systems.
• Commercial and infrastructure power distribution.
• Transformer-fed low-voltage distribution boards.
• Generator and standby power switchboards.
• Critical installations requiring comprehensive LSIG electronic protection.