1SDA059441R1 ABB E4H/f 3200 PR122/P-LSI 3200 A 4P Air Circuit Breaker

Why Choose the ABB 1SDA059441R1 E4H/f 3200 Air Circuit Breaker?

The ABB 1SDA059441R1 is a high-performance SACE Emax E4H/f air circuit breaker (ACB) designed for protection and switching in demanding low-voltage industrial power distribution systems. As part of the ABB SACE New Emax series, this four-pole circuit breaker combines a rated current of 3200 A with the advanced PR122/P-LSI electronic overcurrent release for accurate and dependable electrical protection.

The PR122/P-LSI electronic trip unit provides long-time, short-time and instantaneous protection functions, helping protect electrical distribution equipment against sustained overloads and short-circuit currents. The E4H/f configuration is specifically designed with a full-size 100% neutral pole, making it suitable for four-wire distribution systems where the neutral conductor must carry the full rated current.

With its 3200 A rated current, H-level breaking performance and four-pole construction, the 1SDA059441R1 is engineered for high-capacity switchboards, industrial distribution networks and critical power installations. This version is a withdrawable moving-part circuit breaker, allowing convenient isolation, inspection and maintenance within a compatible Emax fixed part.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker for high-current power distribution.
• 3200 A rated current for demanding industrial electrical installations.
• Advanced PR122/P-LSI electronic overcurrent release.
• LSI protection provides long-time, short-time and instantaneous overcurrent protection.
• Four-pole configuration with 100% neutral for four-wire distribution systems.
• High H-level short-circuit breaking performance.
• Withdrawable design simplifies isolation, servicing and replacement.
• Suitable for main switchboards and critical low-voltage distribution applications.

Key Features

• ABB SACE New Emax E4H/f series.
• 3200 A rated current.
• Four-pole (4P) configuration.
• Full-size 100% neutral pole.
• PR122/P-LSI electronic release.
• Long-time, short-time and instantaneous protection functions.
• Withdrawable moving-part configuration.
• H performance class for high short-circuit levels.
• Designed for high-capacity low-voltage power distribution.
• Suitable for integration into ABB Emax switchgear systems.

Reliable Circuit Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4H/f provide protection and switching for high-capacity low-voltage electrical networks. Their high continuous-current and short-circuit capabilities make them particularly suitable for main incoming supplies, transformer feeders, generator systems and large industrial switchboards where dependable interruption of fault currents is essential.

The PR122/P-LSI electronic release combines multiple protection functions in a single trip unit. Long-time protection responds to sustained overload conditions, short-time protection supports selective coordination between protective devices, and instantaneous protection provides rapid interruption of severe short-circuit faults. The withdrawable Emax construction also facilitates maintenance and system isolation in critical electrical installations.

Typical Applications

• Main low-voltage electrical distribution boards.
• High-current industrial switchboards and switchgear.
• Transformer secondary and incomer protection.
• Generator and standby power distribution systems.
• Manufacturing and process plants.
• Commercial and industrial building power distribution.
• Infrastructure and utility installations.
• Critical power and large electrical distribution networks.