1SDA056821R1 ABB SACE Emax E4H 3200 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA056821R1 SACE Emax E4H 3200 A Circuit Breaker?

The ABB 1SDA056821R1 is a high-performance SACE Emax E4H air circuit breaker designed for reliable switching and protection of high-current low-voltage electrical distribution systems. Its extended product designation is E4H3200PR122/P-LSIGIn=3200A3pFHR, combining a 3200 A rated current, three-pole fixed construction, rear horizontal terminals and ABB's PR122/P-LSIG electronic overcurrent release.

As part of the ABB SACE Emax range, this E4H circuit breaker is engineered for demanding industrial, commercial and infrastructure power distribution applications. The PR122/P-LSIG R3200 electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection functions, helping protect busbars, cables, switchgear and connected equipment against overloads, short circuits and earth faults.

The 1SDA056821R1 features a three-pole fixed configuration with rear horizontal terminals and a rated current of 3200 A. The E4H performance level is rated for operation up to 690 V AC and provides an ultimate short-circuit breaking capacity of 100 kA at 415 V AC, making it suitable for demanding high-fault-level distribution systems.

Key Advantages

• Heavy-duty ABB SACE Emax E4H air circuit breaker for high-current low-voltage distribution.
• 3200 A rated current for demanding electrical installations.
• Three-pole fixed configuration for permanent switchboard installation.
• Rear horizontal terminals support integration into compatible switchboard arrangements.
• Advanced PR122/P-LSIG R3200 electronic overcurrent release.
• LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
• 100 kA ultimate and service short-circuit breaking capacity at 415 V AC.
• 100 kA short-time withstand current for 1 s for demanding distribution applications.

Key Features

• ABB SACE Emax E4H series.
• 3200 A rated current.
• Three-pole circuit-breaker construction.
• Fixed installation execution.
• Rear horizontal terminals.
• PR122/P-LSIG R3200 electronic overcurrent release.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Ground-fault protection.
• 690 V AC rated operational voltage.
• 100 kA Icu at 415 V AC.
• 100 kA Ics at 415 V AC.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.

Advanced LSIG Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4H protect major low-voltage distribution circuits while providing dependable switching and isolation. The electronic protection release monitors electrical conditions and initiates tripping when configured protection thresholds are exceeded, helping safeguard cables, busbars, switchgear and downstream equipment from potentially damaging overload, short-circuit and earth-fault conditions.

The PR122/P-LSIG R3200 release fitted to the 1SDA056821R1 provides comprehensive long-time, short-time, instantaneous and ground-fault protection. Combined with its 3200 A current rating, three-pole fixed construction and 100 kA breaking capacity at 415 V AC, this E4H circuit breaker is well suited to major distribution boards where high fault levels and advanced electronic protection must be accommodated.

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.
• Installations requiring comprehensive LSIG electronic protection.
• High-fault-level low-voltage switchgear.
• OEM switchgear and panel-building applications.