1SDA055889R1 ABB E2N1600 PR121/P-LSI 1600 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA055889R1 E2N1600 Air Circuit Breaker?

The ABB 1SDA055889R1 is a SACE New Emax E2N1600 air circuit breaker (ACB) designed for dependable switching and protection in demanding low-voltage electrical distribution systems. This three-pole fixed circuit breaker has a rated uninterrupted current of 1600 A and is equipped with the ABB PR121/P-LSI R1600 electronic overcurrent release.

The PR121/P-LSI trip unit provides long-time (L), short-time (S) and instantaneous (I) protection. This combination protects electrical installations against overload and short-circuit conditions while the short-time function supports selective coordination between upstream and downstream protective devices.

The E2N1600 provides a rated ultimate short-circuit breaking capacity of 65 kA at 400–415 V AC and 55 kA at 690 V AC. Its three-pole fixed construction with rear horizontal terminals, four auxiliary contacts and open/closed position indication make the 1SDA055889R1 suitable for permanent installation in industrial and commercial low-voltage switchgear.

Key Advantages

• Genuine ABB SACE New Emax E2N1600 air circuit breaker.
• 1600 A rated uninterrupted current for high-current power distribution.
• Three-pole fixed configuration for three-phase electrical systems.
• PR121/P-LSI R1600 electronic overcurrent release.
• Provides long-time, short-time and instantaneous protection.
• 65 kA Icu at 400–415 V AC for demanding prospective fault-current conditions.
• Short-time protection supports improved selectivity and coordination within distribution networks.
• Rear horizontal terminals support practical integration into fixed switchgear assemblies.

Key Features

• ABB SACE New Emax E2N1600 series.
• 1600 A rated uninterrupted current.
• 690 V AC rated operational voltage.
• Three-pole fixed construction.
• PR121/P-LSI R1600 electronic trip unit.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• 65 kA Icu and Ics at 400–415 V AC.
• 55 kA Icu and Ics at 690 V AC.
• 55 kA short-time withstand current for 1 s.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• Rear horizontal main terminals.
• Four auxiliary contacts for open/closed circuit-breaker status indication.

Selective High-Performance Protection for Power Distribution

Air circuit breakers such as the ABB SACE New Emax E2N1600 provide switching, isolation and overcurrent protection for high-current low-voltage distribution circuits. With a rated ultimate short-circuit breaking capacity of 65 kA at 400–415 V AC, the E2N performance level is suitable for installations where substantial prospective fault currents must be safely interrupted.

The PR121/P-LSI electronic release combines long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. The short-time function is particularly useful in coordinated distribution systems, while the 1600 A rating and fixed three-pole construction make the 1SDA055889R1 a robust solution for main distribution and high-current feeder protection.

Typical Applications

• Industrial low-voltage switchboards and distribution panels.
• Main incoming circuit protection.
• High-current feeder protection.
• Commercial building electrical distribution systems.
• Manufacturing and process industry power systems.
• Infrastructure and utility electrical installations.
• Distribution systems requiring selective short-circuit protection.