1SDA056792R1 ABB SACE Emax E4S 4000 A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA056792R1 SACE Emax E4S 4000 A Circuit Breaker?

The ABB 1SDA056792R1 is a high-performance SACE Emax E4S air circuit breaker designed for reliable switching and protection of high-current low-voltage electrical distribution systems. Its product designation is E4S4000PR121/P-LIIn=4000A4pFH, with the full configuration identified as E4S 4000 PR121/P-LI In=4000A 4p F HR, combining a 4000 A rated current, four-pole fixed construction, rear horizontal terminals and ABB's PR121/P-LI electronic overcurrent release.

As part of the ABB SACE Emax range, this E4S circuit breaker is engineered for demanding industrial, commercial and infrastructure power distribution applications. The PR121/P-LI R4000 electronic trip unit provides long-time overload and instantaneous short-circuit protection, helping safeguard busbars, cables, switchgear and connected equipment against damaging overcurrent and short-circuit conditions.

The 1SDA056792R1 features a four-pole fixed configuration with rear horizontal terminals, a rated uninterrupted current of 4000 A and a rated operational voltage of 690 V AC. The E4S performance level provides an ultimate short-circuit breaking capacity of 75 kA across its specified AC operating-voltage range, making it suitable for substantial low-voltage distribution systems.

Key Advantages

• Heavy-duty ABB SACE Emax E4S air circuit breaker for high-current low-voltage distribution.
• 4000 A rated current for demanding electrical installations.
• Four-pole fixed configuration suitable for systems requiring four-pole switching.
• Rear horizontal terminals for integration into compatible switchboard arrangements.
• Electronic PR121/P-LI R4000 overcurrent release.
• LI protection provides long-time overload and instantaneous short-circuit protection.
• 75 kA rated ultimate short-circuit breaking capacity.
• Four auxiliary contacts support circuit-breaker status signalling and control integration.

Key Features

• ABB SACE Emax E4S series.
• 4000 A rated uninterrupted current.
• Four-pole circuit-breaker construction.
• Fixed installation execution.
• Rear horizontal terminals.
• PR121/P-LI R4000 electronic overcurrent release.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 75 kA short-time withstand current for 1 s and 3 s.
• Four auxiliary contacts.
• Open/closed circuit-breaker position indication.

Reliable 4000 A Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4S protect major low-voltage distribution circuits while providing dependable switching and isolation. The electronic protection release monitors current conditions and initiates tripping when configured protection thresholds are exceeded, helping safeguard cables, busbars, switchgear and downstream electrical equipment from overload and short-circuit conditions.

The PR121/P-LI R4000 release fitted to the 1SDA056792R1 provides long-time overload and instantaneous short-circuit protection. Combined with its 4000 A current rating, four-pole fixed construction, rear horizontal terminals and 75 kA short-circuit breaking capacity, this E4S circuit breaker is well suited to major distribution boards and other demanding high-current installations.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial high-current power distribution systems.
• High-capacity incoming supplies and feeders.
• Commercial and infrastructure switchboards.
• Factory and manufacturing electrical installations.
• Transformer secondary distribution systems.
• Generator and standby power distribution systems.
• Four-pole electrical distribution installations.
• High-current fixed circuit-breaker installations.
• OEM switchgear and panel-building applications.