1SDA056543R1 ABB E3V800 PR123/P-LSIG 800 A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA056543R1 E3V 800 A Air Circuit Breaker?

The ABB 1SDA056543R1 is a high-performance SACE Emax E3V air circuit breaker (ACB) designed for switching and protection in demanding low-voltage electrical distribution systems. Identified as E3V800 PR123/P-LSIG In=800A 4P F HR, this four-pole fixed circuit breaker combines an 800 A rated uninterrupted current with ABB’s advanced PR123/P-LSIG electronic overcurrent release.

As part of the ABB SACE Emax / New Emax range, the E3V800 is engineered for industrial, commercial and infrastructure power distribution applications requiring high fault-current interruption capability. The PR123/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection, helping safeguard cables, busbars, transformers and connected equipment against overloads, short circuits and earth faults.

This version features a four-pole fixed construction with rear horizontal terminals for permanent installation within low-voltage switchboards. With an 800 A rated current, a rated voltage of 690 V AC and a rated short-circuit breaking capacity of 130 kA at 400 V AC, 50 Hz, the E3V800 is well suited to distribution systems where comprehensive four-pole protection and high fault-current interruption capability are required.

Key Advantages

• High-performance 800 A air circuit breaker for low-voltage power distribution.
• Advanced PR123/P-LSIG electronic protection release.
• LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
• Four-pole configuration for switching and protection across four conductors.
• Fixed mounting for permanent installation in electrical switchboards.
• Rear horizontal terminals facilitate connection to switchboard conductors and busbars.
• 130 kA short-circuit breaking capacity at 400 V AC, 50 Hz.
• Integrated earth-fault protection for comprehensive distribution-system protection.

Key Features

• ABB SACE Emax E3V frame.
• 800 A rated uninterrupted current.
• PR123/P-LSIG electronic trip unit.
• Four-pole configuration.
• Fixed mounting construction.
• Rear horizontal terminals.
• 690 V AC rated voltage.
• 130 kA rated short-circuit breaking capacity at 400 V AC, 50 Hz.
• 320–800 A overload release adjustment range.
• 1200–12000 A instantaneous short-circuit release adjustment range.
• Integrated ground-fault protection through the LSIG protection release.
• Four auxiliary change-over contacts.
• Open/closed position indication.
• Optional motor operating mechanism capability.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB E3V800 provide switching and automatic protection for high-current low-voltage electrical distribution systems. The PR123/P electronic release monitors circuit conditions and provides advanced protection functions to help safeguard cables, busbars, transformers and downstream electrical equipment against damaging overload, short-circuit and earth-fault conditions.

The LSIG configuration combines long-time overload protection, short-time selective short-circuit protection, instantaneous short-circuit protection and ground-fault protection. Combined with the E3V frame’s high breaking performance and four-pole construction, this makes the 1SDA056543R1 particularly suitable for critical distribution circuits requiring comprehensive protection and reliable interruption of high prospective fault currents.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Main incomer and feeder protection.
• Four-pole power distribution circuits.
• Manufacturing and process plants.
• Commercial and infrastructure electrical systems.
• Transformer secondary distribution circuits.
• High-fault-level electrical installations.
• Power distribution systems requiring selective LSIG protection.