1SDA056365R1 ABB E3H800 PR122/P-LSIG 800A 4P Withdrawable Air Circuit Breaker

Why Choose the ABB E3H800 PR122/P-LSIG 800A 4P Withdrawable Air Circuit Breaker?

The ABB E3H800 PR122/P-LSIG, order code 1SDA056365R1, is a high-performance SACE Emax air circuit breaker moving part designed for protection and switching in demanding low-voltage electrical distribution systems. This E3H breaker has a rated uninterrupted current of 800 A, a four-pole configuration and ABB's advanced electronic PR122/P-LSIG overcurrent release.

Designed as the moving portion of a withdrawable circuit-breaker installation, the E3H800 enables convenient isolation, inspection and servicing within compatible SACE Emax switchgear. The H short-circuit performance level provides high fault-interruption capability, including a rated ultimate short-circuit breaking capacity of 100 kA at 400 V AC and 85 kA at 690 V AC.

The PR122/P-LSIG electronic trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. Combined with its 800 A current rating, four-pole architecture and withdrawable construction, the 1SDA056365R1 is well suited to main incomers, feeders and critical distribution circuits requiring comprehensive electronic protection.

Key Advantages

• High-performance 800 A SACE Emax air circuit breaker moving part.
• Four-pole configuration for suitable three-phase systems incorporating a neutral conductor.
• PR122/P-LSIG electronic overcurrent release provides comprehensive overload, short-circuit and earth-fault protection.
• Withdrawable construction supports convenient isolation, inspection and switchboard maintenance.
• H short-circuit performance level for demanding low-voltage distribution systems.
• Fitted with four auxiliary contacts and circuit-breaker open/closed position indication.

Key Features

• ABB SACE Emax E3H air circuit breaker moving part.
• 800 A rated uninterrupted current.
• Four-pole configuration.
• PR122/P-LSIG R800 electronic overcurrent release.
• LSIG protection functions for long-time, short-time, instantaneous and earth-fault protection.
• H short-circuit performance level.
• Rated ultimate short-circuit breaking capacity of 100 kA at 400 V AC.
• Rated ultimate short-circuit breaking capacity of 85 kA at 690 V AC.
• Withdrawable moving-part construction for compatible SACE Emax switchgear.
• Rated operational voltage up to 690 V AC.
• Four auxiliary contacts for status signalling.
• Integrated circuit-breaker open/closed position indication.

Reliable High-Current Protection for Low-Voltage Distribution

Air circuit breakers such as the ABB SACE Emax E3H800 protect electrical distribution systems against damaging overload, short-circuit and earth-fault conditions. The PR122/P-LSIG electronic release combines long-time, short-time, instantaneous and ground-fault protection functions, enabling comprehensive protection and improved selectivity within demanding low-voltage distribution networks.

The withdrawable moving-part design is particularly valuable in industrial switchboards where serviceability and operational flexibility are important. The breaker can be isolated from its compatible fixed part for inspection or maintenance, while its 800 A rating, four-pole architecture and H-level short-circuit performance provide dependable protection for critical power distribution systems.

Typical Applications

• Main incoming protection for industrial low-voltage switchboards.
• High-capacity feeder and distribution circuit protection.
• Manufacturing plants and process facilities.
• Commercial and infrastructure power distribution systems.
• Motor control centres and large electrical distribution assemblies.
• Withdrawable switchgear requiring overload, short-circuit and earth-fault protection.