1SDA071792R1 ABB E4.2H 3200 Ekip Dip LSI 4p FHR Air Circuit Breaker

Why Choose the ABB E4.2H 3200 Ekip Dip LSI 4p FHR Air Circuit Breaker?

The ABB E4.2H 3200 Ekip Dip LSI 4p FHR, order code 1SDA071792R1, is a high-performance four-pole Emax 2 air circuit breaker designed for protection and switching in demanding low-voltage power-distribution systems. Part of the ABB SACE Emax 2 E4.2 series, this fixed breaker combines a 3200 A rated uninterrupted current with the Ekip Dip LSI electronic trip unit for dependable overload and short-circuit protection.

The E4.2H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 400/415 V AC. Its Ekip Dip LSI electronic release provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection, allowing the breaker to be coordinated effectively with other protective devices throughout an electrical distribution network.

This version is a four-pole fixed circuit breaker fitted with rear flat horizontal (FHR) terminals. With a rated voltage of 690 V AC and a rated short-time withstand current of 85 kA for 1 s, the 1SDA071792R1 provides robust protection for high-current industrial switchboards, infrastructure installations and critical power-distribution systems.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage distribution systems.
• 3200 A rated uninterrupted current for high-current electrical installations.
• 100 kA ultimate breaking capacity at 400/415 V AC for robust short-circuit protection.
• Ekip Dip LSI electronic trip unit provides long-time, short-time and instantaneous protection.
• Adjustable protection settings support selective coordination within complex distribution networks.
• 85 kA short-time withstand current for 1 s supports demanding fault-level requirements.
• Four-pole construction provides switching and protection across four conductors.
• Rear flat horizontal terminals support practical integration into low-voltage switchboards.

Key Features

• ABB SACE Emax 2 E4.2H series.
• 3200 A rated uninterrupted current.
• Four-pole configuration.
• Ekip Dip LSI electronic trip unit.
• Long-time overload, short-time delayed and instantaneous short-circuit protection.
• 1280–3200 A overload release setting range.
• 1920–32000 A short-time delayed short-circuit release setting range.
• 4800–48000 A instantaneous short-circuit release setting range.
• 690 V AC rated voltage.
• 100 kA Icu at 400/415 V AC.
• 85 kA Icu at 500–690 V AC.
• 85 kA short-time withstand current for 1 s.
• Fixed (F) execution.
• Rear flat horizontal (FHR) terminals.
• Four auxiliary change-over contacts for breaker status signalling.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB E4.2H protect high-current low-voltage distribution networks against overload and short-circuit conditions. The combination of a 3200 A current rating, 100 kA breaking capacity at 400/415 V AC and adjustable LSI protection makes the 1SDA071792R1 particularly suitable for main distribution circuits where dependable fault interruption and selective coordination are essential.

The Ekip Dip LSI trip unit provides electronic protection with adjustable long-time, short-time and instantaneous thresholds. This allows protection characteristics to be matched to the electrical installation while the Emax 2 platform provides the mechanical and electrical performance required for demanding industrial and infrastructure switchboards.

Typical Applications

• Main incoming protection in low-voltage switchboards.
• Industrial power-distribution systems.
• Large manufacturing and process facilities.
• Commercial and infrastructure electrical installations.
• Data centres and critical power systems.
• Transformer and distribution feeder protection.
• High-current electrical distribution assemblies.
• Networks requiring high short-circuit breaking capacity and selective protection.