1SDA058313R1 ABB E2S800 PR123/P-LSIG 800A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E2S800 PR123/P-LSIG 800A Air Circuit Breaker?

The ABB E2S800 PR123/P-LSIG is a high-performance 800 A air circuit breaker (ACB) moving portion designed for advanced protection and switching in low-voltage electrical distribution systems. As part of the proven ABB SACE Emax E2 series, this four-pole withdrawable configuration combines high short-circuit performance with the sophisticated PR123/P electronic trip unit for precise protection of demanding industrial and commercial power networks.

Equipped with LSIG protection, the PR123/P trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection. The PR123/P is ABB's advanced Emax protection release, supporting comprehensive circuit protection and selective coordination in complex low-voltage distribution installations.

With a rated uninterrupted current of 800 A, rated operational voltage of 690 V AC and an ultimate short-circuit breaking capacity of 85 kA at 415 V AC, the E2S800 provides robust performance for demanding power-distribution applications. This version is a four-pole withdrawable moving portion fitted with four auxiliary change-over contacts and open/closed position indication for integration into compatible SACE Emax switchgear.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker moving portion for low-voltage power distribution.
• 800 A rated uninterrupted current for demanding industrial and commercial installations.
• 85 kA ultimate short-circuit breaking capacity at 415 V AC.
• Advanced PR123/P electronic trip unit with LSIG protection.
• Long-time, short-time, instantaneous and ground-fault protection functions.
• Four-pole withdrawable configuration supports maintainable switchgear installations.
• 65 kA short-time withstand current for 1 s supports selective protection.
• Four auxiliary change-over contacts and open/closed position indication support monitoring and control.

Key Features

• ABB SACE Emax E2S 800 air circuit breaker moving portion.
• 800 A rated uninterrupted current.
• PR123/P-LSIG R800 electronic overcurrent release.
• LSIG protection: long-time, short-time, instantaneous and ground fault.
• Four-pole construction.
• Withdrawable (W) moving portion configuration.
• 690 V AC rated operational voltage.
• 85 kA Icu and Ics at 415 V AC.
• 65 kA Icu and Ics at 690 V AC.
• 65 kA Icw for 1 s.
• 12 kV rated impulse withstand voltage.
• Four auxiliary change-over contacts and open/closed position indication.

Advanced Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB E2S800 protect electrical distribution equipment against overloads, short circuits and ground faults while providing controlled switching and isolation. The E2S performance level is engineered for systems with high prospective fault currents, making this breaker suitable for important incoming, feeder and distribution circuits.

The PR123/P electronic trip unit provides advanced protection through long-time, short-time, instantaneous and ground-fault functions. Combined with the withdrawable construction, this configuration supports selective protection, convenient servicing and dependable continuity of operation in sophisticated low-voltage switchgear systems.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Withdrawable switchgear and power distribution centres.
• Transformer secondary and feeder protection.
• Generator and utility distribution systems.
• High-current machinery and plant distribution circuits.