1SDA056730R1 ABB SACE Emax E3L 2000 A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA056730R1 SACE Emax E3L 2000 A Circuit Breaker?

The ABB 1SDA056730R1 is a high-performance SACE Emax E3L air circuit breaker designed for reliable switching and protection of high-current low-voltage electrical distribution systems. Its extended product designation is E3L2000PR121/P-LSIGIn=2000A4pFHR, combining a 2000 A rated current, four-pole fixed construction, rear horizontal terminals and ABB's PR121/P-LSIG electronic overcurrent release.

As part of the ABB SACE Emax range, this E3L circuit breaker is engineered for demanding industrial, commercial and infrastructure power distribution applications. The PR121/P-LSIG R2000 electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection functions, helping safeguard busbars, cables, switchgear and connected equipment against overloads, short circuits and earth faults.

The 1SDA056730R1 features a four-pole fixed configuration with rear horizontal terminals, a rated uninterrupted current of 2000 A and a rated operational voltage of 690 V AC. The E3L performance level provides an ultimate short-circuit breaking capacity of 130 kA at 400 V AC, making this circuit breaker suitable for demanding high-fault-level distribution systems.

Key Advantages

• Heavy-duty ABB SACE Emax E3L air circuit breaker for low-voltage power distribution.
• 2000 A rated current for demanding high-current electrical installations.
• Four-pole fixed configuration suitable for systems requiring neutral switching and protection.
• Advanced PR121/P-LSIG R2000 electronic overcurrent release.
• LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
• 130 kA ultimate short-circuit breaking capacity at 400 V AC.
• Rear horizontal terminals support practical integration into compatible switchboard arrangements.
• Four auxiliary change-over contacts and open/closed position indication support circuit-breaker monitoring.

Key Features

• ABB SACE Emax E3L series.
• 2000 A rated uninterrupted current.
• Four-pole circuit-breaker construction.
• Fixed installation execution.
• Rear horizontal terminals.
• PR121/P-LSIG R2000 electronic overcurrent release.
• Long-time, short-time, instantaneous and ground-fault protection functions.
• 690 V AC rated operational voltage.
• 130 kA Icu at 400 V AC.
• Adjustable overload and short-circuit protection settings.
• Four auxiliary change-over contacts fitted.
• Circuit-breaker open/closed position indication.
• Optional motor operating mechanism capability.

Reliable High-Current Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E3L protect major low-voltage distribution circuits while providing dependable switching and isolation. The electronic trip unit monitors current conditions and initiates tripping when configured protection thresholds are exceeded, helping safeguard cables, busbars, switchgear and downstream electrical equipment.

The PR121/P-LSIG release fitted to the 1SDA056730R1 provides comprehensive LSIG protection for overload, short-time short-circuit, instantaneous short-circuit and ground-fault conditions. Combined with its 2000 A current rating, four-pole fixed construction and high short-circuit breaking performance, this E3L circuit breaker is well suited to major distribution boards where comprehensive high-current protection is required.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial power distribution systems.
• High-current 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 installations requiring neutral switching and protection.
• High-fault-level electrical distribution installations.
• OEM switchgear and panel-building applications.