1SDA071847R1 ABB E4.2H 4000 Ekip G Touch LSIG 4p FHR Air Circuit Breaker

Why Choose the ABB E4.2H 4000 Ekip G Touch LSIG 4p FHR Air Circuit Breaker?

The ABB E4.2H 4000 Ekip G Touch LSIG 4p FHR, order code 1SDA071847R1, is a high-performance four-pole SACE Emax 2 air circuit breaker designed for generator protection and demanding low-voltage power-distribution applications. Part of the ABB SACE Emax 2 E4.2 series, this fixed breaker combines a 4000 A rated uninterrupted current with the advanced Ekip G Touch LSIG electronic trip unit.

The E4.2H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 440 V AC and a rated short-time withstand current of 85 kA for 1 s. Its Ekip G Touch LSIG trip unit combines long-time overload, selective short-time, instantaneous short-circuit and earth-fault protection with generator-oriented protection functionality, making it particularly suitable for installations incorporating generators and complex power sources.

This version is a four-pole fixed air circuit breaker equipped with rear horizontal (FHR) terminals. The combination of high-current capability, advanced electronic protection and generator-focused Ekip functionality makes the 1SDA071847R1 suitable for generator switchboards, standby power systems, industrial plants and critical infrastructure where dependable fault protection and selective coordination are essential.

Key Advantages

• ABB SACE Emax 2 breaker specifically configured with Ekip G Touch functionality for generator applications.
• 4000 A rated uninterrupted current for high-current power systems.
• 100 kA ultimate short-circuit breaking capacity at 440 V AC.
• 85 kA short-time withstand current for 1 s supports demanding fault-level requirements.
• LSIG electronic protection covers overload, selective short-circuit, instantaneous short-circuit and earth-fault conditions.
• Touchscreen-based Ekip interface supports intuitive protection configuration and system supervision.
• Generator-oriented protection functionality supports generating sets and multi-source electrical systems.
• Four-pole fixed construction with rear horizontal terminals supports integration into high-current switchboards.

Key Features

• ABB SACE Emax 2 E4.2H series.
• 4000 A rated uninterrupted current.
• Four-pole configuration.
• Ekip G Touch LSIG electronic trip unit.
• Long-time overload protection.
• Selective short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated earth-fault protection.
• Generator-oriented protection and monitoring functionality.
• 100 kA Icu at 440 V AC.
• 85 kA Icw for 1 s.
• Fixed (F) execution.
• Rear horizontal (FHR) terminals.
• Touchscreen interface for configuration, measurements and breaker supervision.
• Designed for high-current generator and low-voltage power-distribution applications.

Advanced Generator Protection for High-Current Power Systems

Generator-fed electrical systems require protection capable of responding appropriately to operating conditions that differ from conventional utility-fed networks. The Ekip G Touch LSIG platform is designed for generator applications while retaining comprehensive overload, short-circuit and earth-fault protection. Combined with the E4.2H breaker's 4000 A current capability and 100 kA Icu at 440 V AC, this provides a robust solution for high-power generating and distribution systems.

The Ekip Touch interface provides an accessible platform for configuring and supervising protection functions, while the LSIG architecture helps coordinate the breaker with other protective devices throughout the installation. This makes the 1SDA071847R1 particularly useful in generator switchboards, standby power systems and critical installations where selective fault isolation and continuity of supply are key design requirements.

Typical Applications

• Generator protection and generator switchboards.
• Standby and emergency power-generation systems.
• Main incoming protection in low-voltage switchboards.
• Industrial power-generation and distribution systems.
• Data centres and critical power infrastructure.
• Hospitals and essential-service electrical systems.
• Large manufacturing and process facilities.
• Multi-source electrical networks requiring LSIG protection and selective coordination.