1SDA055723R1 ABB E1N800 PR122/P-LI 800A 4P Withdrawable Air Circuit Breaker

Why Choose the ABB E1N800 PR122/P-LI 800A 4P Withdrawable Air Circuit Breaker?

The ABB E1N800 PR122/P-LI, order code 1SDA055723R1, is a high-performance SACE Emax air circuit breaker moving part designed for switching and protection in low-voltage power distribution systems. Rated at 800 A, this four-pole unit combines the E1N frame with the PR122/P-LI electronic overcurrent release.

This model is supplied as a withdrawable moving part (W MP) for installation with the corresponding ABB SACE Emax fixed part. Its withdrawable construction allows the breaker to be isolated and removed for inspection, testing or replacement, while the four-pole configuration supports applications where switching of the neutral conductor is required.

The PR122/P-LI electronic trip unit provides long-time overload and instantaneous short-circuit protection. With a rated operational voltage of 690 V AC, an ultimate short-circuit breaking capacity of 50 kA at 400–415 V AC and a short-time withstand current of 50 kA for 1 s, the E1N800 provides dependable protection for demanding power distribution systems.

Key Advantages

• High-performance ABB SACE Emax E1N air circuit breaker moving part.
• 800 A rated uninterrupted current for substantial low-voltage distribution loads.
• Four-pole withdrawable configuration supports neutral switching where required.
• Advanced PR122/P-LI electronic overcurrent release.
• Provides long-time overload and instantaneous short-circuit protection.
• 50 kA Icu at 400–415 V AC for high fault-current applications.
• 50 kA short-time withstand current for 1 s.
• Withdrawable construction supports efficient inspection, maintenance and replacement.

Key Features

• ABB SACE Emax E1N series.
• 800 A rated uninterrupted current.
• Four-pole (4P) construction.
• Withdrawable moving part (W MP) configuration.
• PR122/P-LI electronic trip unit.
• LI protection: long-time overload and instantaneous short circuit.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 50 kA Icu and Ics at 400–415 V AC.
• 50 kA Icw for 1 s and 36 kA for 3 s.
• Designed for installation with the corresponding E1 withdrawable fixed part.

Reliable Protection for Low-Voltage Power Distribution

The ABB SACE Emax E1N800 is engineered for switching, isolation and protection of high-current low-voltage distribution circuits. Its withdrawable construction enables the moving part to be separated from the corresponding fixed part, supporting efficient maintenance, inspection and replacement in critical switchboard installations.

The PR122/P-LI electronic release provides coordinated protection against overloads and high-level short circuits through its long-time and instantaneous protection functions. Combined with the E1N platform's 50 kA breaking capability and four-pole construction, the 1SDA055723R1 provides a robust solution for main incomers, feeders and distribution circuits requiring neutral switching.

Typical Applications

• Industrial low-voltage switchboards.
• Main incoming circuit protection.
• High-current feeder protection.
• Three-phase systems requiring neutral switching.
• Manufacturing and process plants.
• Commercial building power distribution.
• Infrastructure power distribution systems.