1SDA057479R1 ABB E3S-A 1600 PR122/P-LSI 1600 A 3-Pole Fixed Circuit Breaker

Why Choose the ABB 1SDA057479R1 E3S-A 1600 Circuit Breaker?

The ABB 1SDA057479R1 is a high-performance SACE Emax E3S-A air circuit breaker designed for reliable protection and switching of high-current low-voltage electrical distribution systems. Rated at 1600 A, this three-pole fixed circuit breaker incorporates an advanced PR122/P-LSI R1600 electronic overcurrent release providing long-time, short-time and instantaneous protection.

As part of the proven ABB SACE Emax series, the E3S-A 1600 combines robust switching technology with configurable electronic protection for industrial switchboards, power distribution panels and critical electrical infrastructure. Its fixed construction is well suited to permanent switchboard installations where dependable high-current protection and selective coordination are required.

This configuration is a three-pole fixed version with rear horizontal terminals and a PR122/P-LSI R1600 overcurrent release. The release provides an instantaneous protection setting of 24,000 A, helping protect distribution equipment against severe short-circuit conditions while supporting coordinated protection throughout the electrical system.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker for low-voltage power distribution.
• 1600 A rated current for high-current industrial applications.
• PR122/P-LSI electronic trip unit for comprehensive overcurrent protection.
• Provides long-time, short-time and instantaneous protection.
• Three-pole fixed configuration for permanent switchboard installation.
• Rear horizontal terminals facilitate integration with switchboard busbar systems.
• 24,000 A instantaneous protection setting.
• Suitable for main incomer, feeder and industrial power distribution protection.

Key Features

• ABB SACE Emax E3S-A series.
• 1600 A rated current.
• Three-pole circuit breaker.
• Fixed execution.
• PR122/P-LSI R1600 electronic overcurrent release.
• Long-time (L), short-time (S) and instantaneous (I) protection functions.
• 24,000 A instantaneous setting.
• Rear horizontal terminals.
• Electronic protection suitable for selective distribution systems.
• UL configuration for low-voltage power distribution applications.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3S-A protect low-voltage distribution systems against potentially damaging overload and short-circuit conditions while also providing controlled switching and isolation. Their robust construction and high current capability make them suitable for main distribution boards, industrial switchgear and other installations requiring dependable electrical protection.

The PR122/P-LSI electronic release provides long-time protection against sustained overloads, short-time protection to support selective coordination and instantaneous protection against severe short-circuit currents. Combined with the established Emax switching platform, these functions provide effective protection for demanding industrial and commercial power distribution systems.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial power distribution systems.
• Factory and manufacturing switchgear.
• Commercial and infrastructure electrical installations.
• Transformer secondary protection and distribution.
• High-current feeder protection.
• Power control centres and switchboards.
• Critical electrical distribution infrastructure.