1SDA057501R1 ABB E3S-A 2000 PR121/P-LSI 2000 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA057501R1 E3S-A 2000 Air Circuit Breaker?

The ABB 1SDA057501R1 is a high-performance SACE Emax E3S-A 2000 air circuit breaker moving part designed for reliable switching and protection in demanding low-voltage power distribution systems. As part of the proven ABB SACE Emax series, this three-pole withdrawable circuit breaker incorporates a PR121/P-LSI electronic overcurrent release for comprehensive protection of industrial electrical distribution systems.

This circuit breaker combines robust construction with advanced electronic protection. The PR121/P-LSI R2000 release provides long-time, short-time and instantaneous protection functions, helping protect electrical distribution equipment against overload and short-circuit conditions. Four auxiliary contacts and circuit-breaker open/closed position indication support monitoring, signalling and integration within switchboards and control systems.

With a rated current of 2000 A, a three-pole configuration and withdrawable moving-part construction, the 1SDA057501R1 is suited to high-current industrial distribution boards, switchgear assemblies and power distribution systems where dependable protection and maintainability are essential. The breaker is rated for operation up to 600 V AC and is designed in accordance with UL 1066 requirements.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker for industrial power distribution.
• 2000 A rated current for high-current electrical systems.
• Three-pole configuration for three-phase power distribution.
• Advanced PR121/P-LSI electronic overcurrent release.
• LSI protection provides long-time, short-time and instantaneous overcurrent protection.
• Withdrawable moving-part construction supports efficient switchboard servicing and maintenance.
• Four auxiliary contacts support circuit-breaker status signalling and control.
• Open/closed circuit-breaker position indication for operational monitoring.
• UL 1066 design for low-voltage AC power circuit-breaker applications.

Key Features

• ABB SACE Emax E3S-A 2000 series.
• 2000 A rated current.
• PR121/P-LSI R2000 electronic overcurrent release.
• LSI protection functions: long-time, short-time and instantaneous.
• Three-pole circuit-breaker configuration.
• Withdrawable moving part for compatible SACE Emax switchgear.
• 600 V AC rated voltage.
• Four auxiliary contacts fitted.
• Circuit-breaker open/closed position indication.
• S short-circuit performance level.
• Designed to UL 1066.
• ABB order code 1SDA057501R1.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax provide switching and overcurrent protection for high-current low-voltage electrical distribution systems. They help protect cables, busbars, switchgear and connected equipment against overload and short-circuit conditions while providing dependable circuit isolation and switching within industrial power networks.

The PR121/P-LSI electronic release provides long-time, short-time and instantaneous protection functions, enabling effective protection across a range of overcurrent conditions. Combined with the withdrawable E3S-A construction, the 1SDA057501R1 provides a practical solution for industrial switchboards where high-current protection, operational reliability and maintainability are key requirements.

Typical Applications

• Industrial low-voltage power distribution systems.
• Main incomer and feeder protection in electrical switchboards.
• Manufacturing and process plant electrical distribution.
• Commercial and industrial switchgear assemblies.
• High-current three-phase distribution circuits.
• Power distribution centres and electrical infrastructure.
• Withdrawable SACE Emax circuit-breaker installations.