1SDA071835R1 ABB E4.2S 4000 Ekip Touch LSI 4p FHR Air Circuit Breaker

Why Choose the ABB E4.2S 4000 Ekip Touch LSI 4p FHR Air Circuit Breaker?

The ABB E4.2S 4000 Ekip Touch LSI 4p FHR, order code 1SDA071835R1, is a high-performance four-pole SACE Emax 2 air circuit breaker designed for protection, switching and monitoring in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax 2 E4.2 series, this fixed circuit breaker combines a 4000 A rated uninterrupted current with the advanced Ekip Touch LSI solid-state electronic trip unit.

The E4.2S performance level provides a rated ultimate short-circuit breaking capacity of 85 kA at 400/415 V AC. Its Ekip Touch LSI electronic release provides adjustable long-time overload, selective short-time and instantaneous short-circuit protection, enabling effective coordination with upstream and downstream protective devices throughout complex power-distribution networks.

This model is a four-pole fixed air circuit breaker equipped with rear flat horizontal (FHR) terminals. With a rated operational voltage of 690 V AC, rated insulation voltage of 1000 V AC and 66 kA short-time withstand current for 1 s, the 1SDA071835R1 provides dependable high-current protection for industrial switchboards, infrastructure and critical power-distribution systems.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage power distribution.
• 4000 A rated uninterrupted current for high-current industrial and infrastructure installations.
• 85 kA ultimate breaking capacity at 400/415 V AC for robust short-circuit protection.
• Ekip Touch LSI electronic trip unit provides adjustable long-time, short-time and instantaneous protection.
• Touchscreen interface simplifies protection configuration and access to breaker information.
• 66 kA short-time withstand current for 1 s supports demanding distribution applications.
• Four-pole configuration supports switching and protection in four-conductor systems.
• Fixed construction with rear flat horizontal terminals for integration into low-voltage switchboards.

Key Features

• ABB SACE Emax 2 E4.2S series.
• 4000 A rated uninterrupted current.
• Four-pole configuration.
• Ekip Touch LSI solid-state electronic trip unit.
• Long-time overload, selective short-time and instantaneous short-circuit protection.
• 0.4–1 × In overload protection adjustment.
• 0.6–10 × In selective short-circuit protection adjustment.
• 1.5–15 × In instantaneous short-circuit protection adjustment.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 85 kA Icu at 400/415 V AC.
• 66 kA Icu at 500/525 V AC and 690 V AC.
• 66 kA rated short-time withstand current for 1 s.
• Fixed (F) execution with rear flat horizontal terminals.
• Four auxiliary contacts and circuit-breaker open/closed position indication.
• Designed in accordance with IEC 60947-2.

Advanced Protection for High-Current Power Distribution

Air circuit breakers such as the ABB E4.2S protect high-current low-voltage distribution networks against overload and short-circuit conditions while providing the switching performance required for major distribution circuits. The combination of a 4000 A current rating, 85 kA breaking capacity at 400/415 V AC and configurable LSI protection makes the 1SDA071835R1 particularly suitable for installations where selective coordination and continuity of service are important.

The Ekip Touch LSI trip unit provides configurable electronic protection through an intuitive touchscreen interface. Adjustable long-time, short-time and instantaneous functions allow protection characteristics to be coordinated with the electrical installation, helping safeguard cables, busbars, transformers and other critical equipment while reducing unnecessary disruption from electrical faults.

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 high-current feeder protection.
• Large electrical distribution assemblies.
• Networks requiring selective short-circuit protection and high breaking capacity.