1SDA056452R1 ABB E3H2000 PR122/P-LSI 2000A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3H2000 PR122/P-LSI 2000A Air Circuit Breaker?

The ABB 1SDA056452R1 is a high-performance SACE Emax E3H air circuit breaker moving part designed for protection and switching in high-current low-voltage electrical distribution systems. Rated at 2000 A, this three-pole withdrawable configuration incorporates ABB’s PR122/P-LSI R2000 electronic overcurrent release for advanced protection of industrial, commercial and infrastructure power networks.

As part of the ABB SACE Emax range, the E3H2000 combines high short-circuit breaking performance with configurable electronic protection. The PR122/P-LSI trip unit provides long-time, short-time and instantaneous protection functions, helping safeguard electrical installations against overloads and short circuits while supporting selective protection within low-voltage distribution systems.

The E3H2000 PR122/P-LSI has a rated uninterrupted current of 2000 A, with an ultimate short-circuit breaking capacity of 100 kA at 400 V AC. This version is supplied as a three-pole withdrawable moving part and is fitted with four auxiliary contacts and open/closed position indication, making it suitable for maintainable high-current switchboards and critical power distribution assemblies.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker moving part for low-voltage power distribution.
• 2000 A rated current for demanding industrial and commercial installations.
• PR122/P-LSI R2000 electronic overcurrent release for advanced circuit protection.
• 100 kA ultimate short-circuit breaking capacity at 400 V AC.
• LSI protection provides long-time, short-time and instantaneous protection functions.
• Three-pole withdrawable construction supports efficient inspection, servicing and circuit-breaker replacement.

Key Features

• ABB SACE Emax E3H2000 circuit breaker moving part.
• 2000 A rated uninterrupted current.
• Three-pole withdrawable configuration.
• PR122/P-LSI R2000 electronic overcurrent release.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• 100 kA Icu at 400 V AC.
• 85 kA Icu at 690 V AC.
• 75 kA short-time withstand current for 1 s.
• 65 kA short-time withstand current for 3 s.
• Four auxiliary contacts with circuit-breaker open/closed position indication.

Advanced Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E3H2000 provide switching, isolation and protection for high-current low-voltage distribution circuits. Their high breaking capacity enables substantial fault currents to be interrupted safely, helping protect switchboards, cables and connected electrical equipment in demanding industrial and commercial power distribution environments.

The PR122/P-LSI electronic trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. Combined with the withdrawable Emax construction, this makes the 1SDA056452R1 particularly suitable for main incomers, feeders and other critical circuits where selective protection, high breaking performance and convenient maintenance are required.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Main incomer and feeder circuit protection.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Power distribution centres and withdrawable switchgear assemblies.