1SDA055900R1 ABB E2N1600 PR122/P-LSI 1600A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E2N1600 PR122/P-LSI 1600A 4-Pole Fixed Air Circuit Breaker?

The ABB 1SDA055900R1 is a high-performance SACE Emax E2N air circuit breaker (ACB) designed for switching and protection in demanding low-voltage electrical distribution systems. Rated at 1600 A, this four-pole fixed circuit breaker is equipped with the PR122/P-LSI R1600 electronic overcurrent release for comprehensive overload and short-circuit protection.

As part of the ABB SACE Emax / New Emax range, the E2N1600 combines high short-circuit performance with electronic protection for industrial and commercial power distribution. The PR122/P-LSI release provides long-time, short-time and instantaneous protection functions, helping protect cables, busbars, transformers and connected equipment against sustained overloads and short-circuit faults.

The E2N1600 PR122/P-LSI is a four-pole fixed circuit breaker with rear flat horizontal terminals, a rated uninterrupted current of 1600 A and a rated operational voltage of 690 V AC. Its N performance level provides an ultimate and service short-circuit breaking capacity of 65 kA at 400 V AC and 55 kA at 690 V AC, making it suitable for high-fault-level three-phase four-wire distribution systems.

Key Advantages

• High-capacity 1600 A SACE Emax air circuit breaker.
• Four-pole configuration suitable for three-phase four-wire electrical distribution systems.
• Advanced PR122/P-LSI R1600 electronic overcurrent release.
• LSI protection provides long-time, short-time and instantaneous overcurrent protection.
• 65 kA ultimate and service short-circuit breaking capacity at 400 V AC.
• 55 kA ultimate and service short-circuit breaking capacity at 690 V AC.
• 55 kA short-time withstand current for 1 s supports selective protection strategies.
• Fixed construction with rear flat horizontal terminals for robust switchboard integration.

Key Features

• ABB SACE Emax E2N1600 air circuit breaker.
• 1600 A rated uninterrupted current.
• Four-pole configuration.
• Fixed circuit-breaker construction.
• Rear flat horizontal terminals.
• PR122/P-LSI R1600 electronic overcurrent release.
• Long-time, short-time and instantaneous LSI protection functions.
• 690 V AC rated operational voltage.
• 65 kA Icu/Ics at 400 V AC.
• 55 kA Icu/Ics at 690 V AC.
• Four auxiliary contacts.
• Open/closed circuit-breaker position indication.

Advanced Circuit Protection for High-Fault-Level Four-Wire Distribution

Air circuit breakers such as the ABB E2N1600 provide switching, isolation and protection for high-current low-voltage distribution circuits. The four-pole configuration is particularly suitable for three-phase four-wire systems, while the E2N performance level provides substantial short-circuit interruption capability for installations with elevated prospective fault currents.

The PR122/P-LSI electronic release provides long-time protection against sustained overloads, short-time protection to support selective short-circuit coordination and instantaneous protection against severe fault currents. Together with adjustable protection settings and the E2N's high breaking capacity, these functions support dependable protection and coordination throughout demanding electrical distribution networks.

Typical Applications

• Industrial low-voltage switchboards and distribution panels.
• Three-phase four-wire electrical distribution systems.
• Main incoming circuit protection.
• High-fault-level feeder protection.
• Busbar and bus-coupler applications.
• Transformer secondary distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.