1SDA058729R1 ABB E3H3200 PR122/P-LSIRc 3200A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E3H3200 PR122/P-LSIRc 3200A Air Circuit Breaker?

The ABB E3H3200 PR122/P-LSIRc is a high-performance 3200 A air circuit breaker (ACB) designed for advanced protection and switching in demanding low-voltage electrical distribution systems. As part of the proven ABB SACE Emax E3 series, this three-pole fixed circuit breaker combines high short-circuit performance with the PR122/P electronic overcurrent release for dependable protection of industrial, commercial and infrastructure power networks.

Equipped with LSIRc protection, the PR122/P trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection together with residual-current protection. This combination enables comprehensive protection against high-current faults while supporting residual-current detection when the appropriate external toroid is incorporated into the protection system.

With a rated uninterrupted current of 3200 A and an E3H ultimate short-circuit breaking capacity of 100 kA at 400–415 V AC, this breaker is engineered for high-demand power distribution. The 1SDA058729R1 configuration is a three-pole fixed breaker with horizontal rear terminals, a PR122/P-LSIRc R3200 release, four auxiliary contacts and open/closed position indication.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker for high-current low-voltage distribution.
• 3200 A rated uninterrupted current for demanding power systems.
• 100 kA ultimate short-circuit breaking capacity at 400–415 V AC.
• Advanced PR122/P electronic release with LSIRc protection.
• Long-time, short-time, instantaneous and residual-current protection capabilities.
• Three-pole fixed configuration for permanent switchboard installation.
• Horizontal rear terminals provide practical busbar connections.
• Four auxiliary contacts and open/closed indication support monitoring and control.

Key Features

• ABB SACE Emax E3H 3200 air circuit breaker.
• 3200 A rated uninterrupted current.
• PR122/P-LSIRc R3200 electronic overcurrent release.
• LSIRc protection: long-time, short-time, instantaneous and residual current.
• Three-pole construction.
• Fixed (F) installation version.
• Horizontal rear (HR) terminals.
• 100 kA Icu at 400 V AC.
• IP20 protection rating.
• 400–3200 A overload release adjustment range.
• 1920–32000 A short-time short-circuit adjustment range.
• 4800–48000 A instantaneous short-circuit adjustment range.
• Four auxiliary contacts and open/closed circuit-breaker position indication.

Advanced High-Current and Residual-Current Protection

Air circuit breakers such as the ABB E3H3200 provide switching, isolation and protection for high-current low-voltage distribution circuits. The E3H performance class is suited to installations with substantial prospective fault currents, while the electronic PR122/P release provides adjustable protection characteristics for coordination with other protective devices.

The LSIRc configuration combines conventional overload and short-circuit protection with residual-current functionality. When paired with the appropriate external toroid, this enables the protection system to detect residual currents in addition to high-current faults, supporting comprehensive protection in critical industrial and infrastructure power-distribution systems.

Typical Applications

• Main low-voltage distribution switchboards.
• High-current industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Power distribution centres and switchgear assemblies.
• Transformer secondary and high-current feeder protection.
• Generator and utility distribution systems.
• Circuits requiring residual-current as well as overcurrent protection.