1SDA059442R1 ABB E4H/f 3200 PR122/P-LSIG 3200 A 4P Air Circuit Breaker

Why Choose the ABB 1SDA059442R1 E4H/f 3200 Air Circuit Breaker?

The ABB 1SDA059442R1 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-LSIG electronic overcurrent release for comprehensive electrical protection.

The PR122/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection functions, helping safeguard electrical distribution equipment against overloads, short circuits and earth faults. The E4H/f configuration incorporates a full-size neutral conductor, making it particularly suitable for four-wire distribution systems where the neutral pole must accommodate the full rated current.

With a 3200 A frame size, H-level short-circuit performance and four-pole construction, the 1SDA059442R1 is engineered for high-capacity switchboards, transformer distribution systems and critical industrial power installations. This version is a withdrawable moving-part circuit breaker, providing convenient isolation and servicing when installed in the appropriate ABB 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-LSIG electronic overcurrent release.
• LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
• Four-pole configuration with full-size neutral for four-wire distribution systems.
• High H-level short-circuit breaking performance.
• Withdrawable moving-part design simplifies isolation, servicing and maintenance.
• Suitable for main switchboards, transformer systems and critical low-voltage distribution networks.

Key Features

• ABB SACE New Emax E4H/f series.
• 3200 A rated current.
• Four-pole (4P) configuration.
• Full-size neutral conductor.
• PR122/P-LSIG electronic release.
• Long-time, short-time, instantaneous and ground-fault protection functions.
• Withdrawable moving-part configuration.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• 85 kA rated short-time withstand current for 1 s.
• H performance class for high short-circuit levels.
• Designed for high-capacity low-voltage power distribution 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 reliable interruption of potentially severe fault currents is essential.

The PR122/P-LSIG electronic release combines multiple protection functions within a single trip unit. Long-time protection responds to sustained overloads, short-time protection supports selective coordination, instantaneous protection provides rapid interruption of severe short circuits, and ground-fault protection helps protect the distribution system against earth-fault conditions. The withdrawable Emax construction also facilitates maintenance and electrical isolation in critical 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.