1SDA056132R1 ABB E3N2500 PR122/P-LSI 2500A 3P Withdrawable Air Circuit Breaker

Why Choose the ABB E3N2500 PR122/P-LSI 2500A 3P Withdrawable Air Circuit Breaker?

The ABB E3N2500 PR122/P-LSI, order code 1SDA056132R1, is a high-current SACE Emax air circuit breaker moving part designed for switching and protection in demanding low-voltage power distribution systems. Part of the ABB SACE Emax E3N series, this three-pole withdrawable circuit breaker is rated at 2500 A and incorporates the PR122/P-LSI R2500 electronic overcurrent release.

The PR122/P-LSI trip unit provides long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection. These electronic protection functions help safeguard cables, busbars, switchgear and connected equipment against sustained overloads and short-circuit conditions while supporting coordinated protection within high-current electrical distribution systems.

This E3N2500 configuration is a three-pole withdrawable moving part for compatible SACE Emax switchgear. It has a rated operational voltage of 690 V AC, an ultimate short-circuit breaking capacity of 65 kA and a short-time withstand current of 65 kA, combining substantial electrical performance with the maintainability advantages of withdrawable construction.

Key Advantages

• High-current 2500 A SACE Emax air circuit breaker moving part.
• Advanced PR122/P electronic overcurrent release for dependable circuit protection.
• LSI protection covers long-time overload, short-time short-circuit and instantaneous short-circuit conditions.
• Three-pole configuration designed for three-phase low-voltage distribution systems.
• Withdrawable execution supports efficient inspection, servicing and replacement within compatible switchgear.
• 65 kA ultimate and service short-circuit breaking capacity across the specified AC voltage range.

Key Features

• ABB SACE Emax E3N 2500 air circuit breaker moving part.
• 2500 A rated operational and uninterrupted current.
• Three-pole configuration.
• PR122/P-LSI R2500 electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Withdrawable / moving-part execution.
• Four auxiliary contacts.
• Integrated open/closed position indication.

Advanced LSI Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3N2500 provide switching and protection for high-current low-voltage distribution circuits. The electronic overcurrent release monitors circuit conditions and initiates breaker operation when configured protection thresholds are exceeded, helping protect cables, busbars, switchgear and connected electrical equipment.

The PR122/P-LSI release combines long-time overload, short-time short-circuit and instantaneous short-circuit protection within an electronic trip unit. Together with the E3N frame's 2500 A current capability, 65 kA short-circuit performance and three-pole withdrawable construction, this configuration provides dependable protection for main distribution and high-current feeder circuits while supporting maintainable switchboard designs.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plant switchgear.
• Commercial building electrical distribution.
• Infrastructure and utility installations.
• Main incomer and high-current feeder protection.
• Three-phase low-voltage distribution systems.
• Switchboards requiring withdrawable circuit breaker assemblies.