1SDA056793R1 ABB SACE Emax E4S 4000 A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA056793R1 SACE Emax E4S 4000 A Circuit Breaker?

The ABB 1SDA056793R1 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 E4S 4000 PR121/P-LSI In=4000A 4p F, with the full ABB configuration identified as E4S 4000 PR121/P-LSI In=4000A 4p F HR, combining a 4000 A rated current, four-pole fixed construction, rear horizontal terminals and a PR121/P-LSI 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-LSI electronic trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection, helping safeguard busbars, cables, switchgear and connected equipment against damaging overcurrent and fault conditions.

The 1SDA056793R1 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. Its E4S performance level provides rated ultimate and service short-circuit breaking capacities of 75 kA, 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-LSI overcurrent release.
• LSI protection provides long-time, short-time and instantaneous overcurrent protection.
• 75 kA ultimate and service short-circuit breaking capacity.
• 75 kA short-time withstand current for both 1 s and 3 s.

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-LSI electronic overcurrent release.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 75 kA Icu and Ics across the specified AC operational-voltage range.
• 75 kA Icw for 1 s and 3 s.

Advanced LSI 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 against overload and short-circuit conditions.

The PR121/P-LSI release fitted to the 1SDA056793R1 provides long-time overload, short-time short-circuit 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.
• Installations requiring LSI electronic overcurrent protection.
• OEM switchgear and panel-building applications.