1SDA057351R1 ABB E2N-A 1600 PR122/P-LSI 1600 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA057351R1 E2N-A 1600 Air Circuit Breaker?

The ABB 1SDA057351R1 is a high-performance SACE Emax E2N-A air circuit breaker designed for switching and protection in demanding low-voltage electrical distribution systems. Identified as E2N-A 1600 PR122/P-LSI In=1600A 3p F HR, this three-pole fixed circuit breaker combines a 1600 A rated current with the advanced ABB PR122/P-LSI electronic overcurrent release.

As part of the ABB SACE Emax / New Emax range, the E2N-A platform is engineered for dependable protection of industrial, commercial and infrastructure power distribution systems. This version features a fixed installation with rear horizontal terminals, providing a robust connection arrangement for integration into compatible low-voltage switchboards and power distribution assemblies.

The PR122/P-LSI electronic trip unit provides long-time, short-time and instantaneous overcurrent protection functions. The breaker incorporates an R1600 overcurrent release with an 24,000 A instantaneous release reference and is fitted with four auxiliary contacts plus open/closed position indication for circuit-breaker status monitoring.

Key Advantages

• Heavy-duty ABB SACE Emax E2N-A air circuit breaker for low-voltage power distribution.
• 1600 A rated current for high-capacity industrial and commercial circuits.
• Advanced PR122/P-LSI electronic overcurrent release.
• LSI functionality provides long-time, short-time and instantaneous protection.
• Three-pole fixed configuration for permanent switchboard installations.
• Rear horizontal terminals provide a practical connection arrangement for fixed switchgear.
• R1600 overcurrent release matched to the 1600 A breaker rating.
• Four auxiliary contacts and open/closed indication support circuit-breaker monitoring and control.

Key Features

• ABB SACE Emax E2N-A series.
• 1600 A rated current.
• Three-pole configuration.
• Fixed (F) installation.
• Rear horizontal (HR) terminals.
• PR122/P-LSI electronic trip unit.
• R1600 overcurrent release.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• 24,000 A instantaneous release reference.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• UL configuration for compatible low-voltage switchgear applications.

Advanced Protection for High-Current Distribution

Air circuit breakers such as the ABB SACE Emax E2N-A provide switching, isolation and overcurrent protection for low-voltage electrical distribution systems. Electronic trip technology monitors circuit current and enables the breaker to interrupt the supply when configured protection thresholds are exceeded, helping protect conductors, switchgear and downstream electrical equipment.

The PR122/P-LSI release combines long-time overload protection with short-time and instantaneous short-circuit protection. Together with the fixed E2N-A construction and rear horizontal terminals, the 1SDA057351R1 provides a robust solution for switchboards requiring dependable high-current protection and coordinated operation within complex electrical distribution networks.

Typical Applications

• Low-voltage power distribution switchboards.
• Industrial incoming and feeder circuits.
• Manufacturing and process facilities.
• Commercial building electrical distribution.
• Infrastructure power systems.
• Generator and transformer distribution circuits.
• High-current distribution feeders.
• Fixed switchgear requiring electronic LSI protection.