1SDA055797R1 ABB E2B1600 PR122/P-LSIG 1600A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E2B1600 PR122/P-LSIG 1600A 3-Pole Air Circuit Breaker?

The ABB 1SDA055797R1 is a high-performance SACE Emax E2B air circuit breaker (ACB) designed for switching and protection in high-current low-voltage electrical distribution systems. Rated at 1600 A, this three-pole fixed circuit breaker is equipped with the advanced PR122/P-LSIG R1600 electronic overcurrent release for comprehensive protection of industrial and commercial power networks.

As part of the ABB SACE Emax / New Emax range, the E2B1600 combines robust switching performance with configurable electronic circuit protection. The PR122/P-LSIG release provides long-time, short-time, instantaneous and ground-fault protection functions, helping protect cables, busbars and connected electrical equipment against overloads, short circuits and earth faults.

The E2B1600 PR122/P-LSIG is a three-pole fixed circuit breaker with rear horizontal terminals, a rated uninterrupted current of 1600 A and a rated operational voltage of 690 V AC. Its B performance level provides a rated ultimate short-circuit breaking capacity of 42 kA throughout its specified AC voltage range up to 690 V, making it suitable for demanding low-voltage switchboards and power distribution installations.

Key Advantages

• High-capacity 1600 A air circuit breaker for low-voltage power distribution.
• Advanced PR122/P-LSIG R1600 electronic overcurrent release.
• LSIG protection provides long-time, short-time, instantaneous and ground-fault protection.
• 42 kA ultimate and service short-circuit breaking capacity across the specified AC voltage range.
• 42 kA short-time withstand current for both 1 s and 3 s.
• Three-pole fixed construction for permanent switchboard installations.
• Rear horizontal terminals support straightforward integration with switchboard busbar systems.
• Integrated ground-fault protection provides additional protection for electrical distribution networks.

Key Features

• ABB SACE Emax E2B1600 air circuit breaker.
• 1600 A rated uninterrupted current.
• Three-pole configuration.
• Fixed circuit-breaker version.
• PR122/P-LSIG R1600 electronic overcurrent release.
• Long-time, short-time, instantaneous and ground-fault LSIG protection functions.
• 690 V AC rated operational voltage.
• 42 kA Icu and Ics at 400 V AC.
• 42 kA Icw for 1 s and 3 s.
• 12 kV rated impulse withstand voltage.
• Rear horizontal main terminals.
• Four auxiliary contacts with circuit-breaker open/closed position indication.

Advanced Protection for High-Current Power Distribution

Air circuit breakers such as the ABB E2B1600 provide switching, isolation and protection for high-current low-voltage distribution circuits. They are commonly installed as incoming breakers, high-current feeders and bus-couplers within industrial and commercial switchboards, where reliable interruption of overload and short-circuit currents is essential for protecting electrical infrastructure.

The PR122/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.
• Busbar and bus-coupler applications.
• Transformer secondary distribution.
• Manufacturing and process plants.
• Commercial building power distribution.
• Infrastructure and utility installations.