1SDA056459R1 ABB E3H2000PR122/P-LI 2000 A 4-Pole Withdrawable Air Circuit Breaker Moving Part

Why Choose the ABB E3H2000PR122/P-LI Air Circuit Breaker?

The ABB E3H2000PR122/P-LI is a high-performance four-pole withdrawable air circuit breaker moving part designed for reliable protection, switching and isolation in demanding low-voltage electrical distribution systems. Part of the established ABB SACE Emax E3H series, this configuration combines a 2000 A rated current with the PR122/P-LI R2000 electronic overcurrent release.

The PR122/P-LI R2000 electronic trip unit provides long-time overload and instantaneous short-circuit protection. These LI protection functions help safeguard conductors, switchgear and connected equipment against sustained overloads and severe short-circuit conditions, while the E3H high-breaking-capacity platform is designed for demanding power-distribution applications.

The ABB 1SDA056459R1 is specifically configured as the four-pole moving portion of a withdrawable E3H2000 circuit breaker. It is supplied with four auxiliary contacts and circuit-breaker open/closed position indication, providing a maintainable draw-out solution for industrial switchboards, main distribution assemblies and other high-current low-voltage installations.

Key Advantages

• High-performance ABB SACE Emax E3H air circuit breaker moving part.
• 2000 A rated current for high-current low-voltage distribution systems.
• Four-pole configuration for four-conductor switching and protection.
• PR122/P-LI R2000 electronic trip unit provides long-time and instantaneous protection.
• E3H high-breaking-capacity design for demanding prospective fault-current conditions.
• Withdrawable moving-part construction supports maintainable draw-out switchgear installations.
• Four auxiliary contacts and open/closed position indication support switchboard monitoring and control.

Key Features

• ABB SACE Emax E3H series.
• 2000 A rated current.
• Four-pole circuit breaker configuration.
• PR122/P-LI R2000 electronic overcurrent release.
• LI protection functions: long-time overload and instantaneous short circuit.
• Withdrawable execution for draw-out switchgear assemblies.
• Moving part (W MP) configuration.
• Four auxiliary contacts for status signalling.
• Circuit-breaker open/closed position indication.
• Designed for use with the appropriate E3 withdrawable fixed part.

Reliable LI Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3H provide protection, switching and isolation for major low-voltage distribution circuits. The E3H platform combines high fault-current interruption performance with electronic protection, making it suitable for main incomers, high-current feeders and other critical circuits within industrial and commercial electrical networks.

The PR122/P-LI R2000 release combines long-time protection against sustained overload conditions with instantaneous protection against severe short circuits. The withdrawable construction allows the moving portion to interface with the appropriate E3 fixed part, supporting inspection, maintenance and replacement within suitably configured draw-out switchgear assemblies.

Typical Applications

• Main low-voltage distribution switchboards.
• Withdrawable industrial switchgear assemblies.
• Main incomer and high-current feeder applications.
• Industrial power distribution systems.
• Commercial and infrastructure electrical installations.
• Manufacturing plants and process facilities.
• Generator and transformer distribution systems.