1SDA071846R1 ABB E4.2H 4000 Ekip Touch LSIG 4p FHR Air Circuit Breaker

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

The ABB E4.2H 4000 Ekip Touch LSIG 4p FHR, order code 1SDA071846R1, 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 LSIG electronic trip unit.

The E4.2H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 440 V AC. Its Ekip Touch LSIG trip unit provides long-time overload, selective short-time, instantaneous short-circuit and earth-fault protection, delivering comprehensive protection for high-current distribution circuits while supporting selective coordination throughout the electrical system.

This version is a four-pole fixed air circuit breaker equipped with rear horizontal (FHR) terminals. With the E4.2H frame providing a rated short-time withstand current of 85 kA for 1 s, the 1SDA071846R1 is well suited to main switchboards, industrial distribution systems and critical infrastructure where high fault levels and dependable earth-fault protection must be managed.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage distribution systems.
• 4000 A rated uninterrupted current for high-current industrial and infrastructure applications.
• 100 kA ultimate short-circuit breaking capacity at 440 V AC for robust fault interruption.
• Ekip Touch LSIG electronic trip unit provides comprehensive overload, short-circuit and earth-fault protection.
• Long-time, selective short-time, instantaneous and ground-fault functions support effective protection coordination.
• 85 kA short-time withstand current for 1 s supports demanding fault-level requirements.
• Touchscreen-based Ekip interface provides intuitive access to protection settings and breaker information.
• 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 Touch LSIG electronic trip unit.
• Long-time overload protection.
• Selective short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated earth-fault protection.
• 100 kA Icu at 440 V AC.
• 85 kA rated short-time withstand current for 1 s.
• Fixed (F) execution.
• Rear horizontal (FHR) terminals.
• Ekip Touch interface for protection configuration, measurements and breaker supervision.
• Designed for high-current low-voltage power-distribution applications.

Comprehensive LSIG Protection for High-Current Distribution

Air circuit breakers such as the ABB E4.2H protect high-current low-voltage distribution networks against overloads, short circuits and earth faults while providing the switching capability required for major distribution circuits. The combination of a 4000 A current rating, 100 kA breaking capacity at 440 V AC and comprehensive LSIG protection makes the 1SDA071846R1 particularly suitable for installations where fault discrimination, system selectivity and continuity of service are important.

The Ekip Touch LSIG trip unit combines advanced electronic protection with an intuitive touchscreen interface. Long-time, short-time, instantaneous and earth-fault functions allow the protection characteristics to be coordinated with the electrical installation, helping safeguard cables, busbars, transformers and other critical distribution equipment against damaging 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 high breaking capacity and integrated earth-fault protection.