1SDA071791R1 ABB E4.2H 3200 Ekip Dip LI 4P Air Circuit Breaker

Why Choose the ABB E4.2H 3200 Ekip Dip LI 4P Air Circuit Breaker?

The ABB 1SDA071791R1 is a high-performance SACE Emax 2 E4.2H air circuit breaker (ACB) rated at 3200 A, designed for reliable protection and switching in demanding low-voltage power distribution systems. Part of the ABB SACE Emax 2 series, this fixed four-pole circuit breaker combines high short-circuit performance with the dependable Ekip Dip LI electronic trip unit.

The E4.2H 3200 incorporates the Ekip Dip LI electronic release, providing long-time overload and instantaneous short-circuit protection. Its electronic protection architecture offers accurate and repeatable operation, making it well suited to main distribution, transformer, generator and industrial power applications where dependable circuit protection is essential.

With a rated uninterrupted current of 3200 A, rated operational voltage up to 690 V AC, ultimate short-circuit breaking capacity of 100 kA at 400–440 V AC and 85 kA at 500–690 V AC, the E4.2H provides robust protection for high-current installations. This version is a fixed, four-pole breaker with rear flat horizontal terminals, providing straightforward integration into low-voltage switchboards.

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.
• Four-pole configuration with a 100% rated neutral pole.
• Reliable Ekip Dip LI electronic trip unit.
• LI functionality provides long-time overload and instantaneous short-circuit protection.
• 100 kA ultimate short-circuit breaking capacity at 400–440 V AC.
• 85 kA ultimate short-circuit breaking capacity at 500–690 V AC.
• Fixed installation with rear flat horizontal terminals for switchboard integration.

Key Features

• ABB SACE Emax 2 E4.2H frame.
• 3200 A rated uninterrupted current.
• Four-pole construction.
• Fixed circuit-breaker execution.
• Rear flat horizontal terminals.
• Ekip Dip LI solid-state electronic protection release.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• 100 kA breaking capacity at 400–440 V AC.
• 85 kA short-time withstand current for 1 s.
• Four auxiliary contacts with breaker open/closed position indication.
• Designed for high-current industrial and infrastructure distribution systems.

High-Performance LI Protection for Power Distribution

ABB SACE Emax 2 air circuit breakers provide dependable switching and protection for low-voltage electrical networks. The E4.2H combines a substantial 3200 A current rating with an ultimate breaking capacity of up to 100 kA, making it suitable for high-power installations where significant prospective short-circuit currents must be safely interrupted.

The Ekip Dip LI release provides long-time overload (L) and instantaneous short-circuit (I) protection. This combination delivers essential electronic protection for feeders, transformers and distribution systems while retaining a straightforward protection architecture for applications that do not require short-time selective or earth-fault functions within the breaker trip unit.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Transformer secondary protection.
• Generator and installation protection.
• High fault-level electrical networks.
• High-current feeder protection and switching.