1SDA056461R1 ABB E3H2000 PR122/P-LSIG 2000A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3H2000 PR122/P-LSIG 2000A 4-Pole Air Circuit Breaker?

The ABB 1SDA056461R1 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 four-pole withdrawable configuration incorporates ABB’s PR122/P-LSIG R2000 electronic overcurrent release for comprehensive protection of industrial, commercial and infrastructure power networks.

As part of the ABB SACE Emax range, the E3H2000 combines high short-circuit performance with advanced electronic protection. The PR122/P-LSIG trip unit provides long-time, short-time, instantaneous and earth-fault protection functions, helping safeguard electrical installations against overloads, short circuits and earth faults while supporting selective protection strategies.

The E3H2000 PR122/P-LSIG has a rated uninterrupted current of 2000 A, a rated operational voltage of 690 V AC and an ultimate short-circuit breaking capacity of 100 kA at 400 V AC. This version is supplied as a four-pole withdrawable moving part with four auxiliary contacts and open/closed position indication, making it suitable for maintainable high-current switchboards requiring four-pole switching and comprehensive LSIG protection.

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.
• Four-pole construction for applications requiring switching of all four conductors.
• PR122/P-LSIG R2000 electronic overcurrent release for comprehensive circuit protection.
• LSIG protection provides long-time, short-time, instantaneous and earth-fault protection.
• 100 kA ultimate short-circuit breaking capacity at 400 V AC.
• 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.
• Four-pole withdrawable configuration.
• PR122/P-LSIG R2000 electronic overcurrent release.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated earth-fault protection.
• 100 kA Icu at 400 V AC.
• 85 kA Ics at 400 V AC.
• 75 kA short-time withstand current for 1 s.
• 12 kV rated impulse withstand voltage.
• Four auxiliary contacts with circuit-breaker open/closed position indication.

Advanced Four-Pole 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. The four-pole configuration enables simultaneous switching of three phase conductors and the neutral, making it suitable for electrical systems where complete four-pole isolation is required.

The PR122/P-LSIG electronic trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. Combined with the withdrawable Emax construction and high short-circuit performance, this makes the 1SDA056461R1 particularly suitable for main incomers, feeders and other critical circuits where comprehensive protection, four-pole switching and convenient maintenance are required.

Typical Applications

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