1SDA071200R1 ABB E4.2N 4000 Ekip G Hi-Touch LSIG 3p F HR Air Circuit Breaker

Why Choose the ABB E4.2N 4000 Ekip G Hi-Touch LSIG 3p F HR Air Circuit Breaker?

The ABB E4.2N 4000 Ekip G Hi-Touch LSIG 3p F HR, order code 1SDA071200R1, is a high-performance 4000 A three-pole air circuit breaker (ACB) designed for advanced generator and low-voltage power distribution protection. Part of the ABB SACE Emax 2 series, it combines the E4.2N performance class with fixed mounting, rear horizontal terminals and the sophisticated Ekip G Hi-Touch LSIG electronic trip unit.

The E4.2N 4000 provides an ultimate short-circuit breaking capacity of 66 kA at 440 V AC and a rated short-time withstand current of 66 kA for 1 s. Its 4000 A continuous-current capability makes it suitable for substantial generator, industrial and infrastructure distribution systems requiring dependable high-current switching and fault protection.

Protection is provided by the Ekip G Hi-Touch LSIG electronic release, combining long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection with advanced generator-oriented protection, measurement and monitoring capabilities. The breaker is supplied in a fixed three-pole configuration with rear flat horizontal terminals for integration into suitable low-voltage switchboards.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for generator and power distribution applications.
• 4000 A rated uninterrupted current for demanding high-current systems.
• Ekip G Hi-Touch LSIG electronic trip unit with advanced generator protection functionality.
• Comprehensive long-time, short-time, instantaneous and earth-fault protection.
• 66 kA ultimate short-circuit breaking capacity at 440 V AC.
• 66 kA rated short-time withstand current for 1 s.
• Rated for operation up to 690 V AC.
• Fixed three-pole construction with rear horizontal terminals.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated uninterrupted current.
• Three-pole configuration.
• Fixed mounting design.
• Rear flat horizontal main terminals.
• Ekip G Hi-Touch LSIG electronic release.
• Long-time overload protection.
• Short-time selective short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated earth-fault protection.
• 66 kA Icu at 400–690 V AC.
• 66 kA Ics at 400–690 V AC.
• 66 kA Icw for 1 s and 50 kA Icw for 3 s.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.

Advanced Generator and Power Distribution Protection

ABB SACE Emax 2 air circuit breakers provide switching, isolation and electronic protection for high-current low-voltage networks. The E4.2N 4000 combines a 4000 A continuous-current rating with 66 kA breaking capacity at 400–690 V AC and 66 kA one-second short-time withstand capability, providing robust performance for substantial generator and distribution installations.

The Ekip G Hi-Touch LSIG release combines comprehensive overload, delayed short-circuit, instantaneous short-circuit and earth-fault protection with advanced functionality intended for generator applications. Its protection and monitoring capabilities support selective coordination and effective management of complex low-voltage networks while helping maintain continuity of supply to unaffected circuits.

Typical Applications

• Generator protection and generator switchboards.
• Main low-voltage distribution switchboards.
• High-current industrial power distribution systems.
• Manufacturing and process plants.
• Critical infrastructure and standby power systems.
• Transformer and generator-fed distribution networks.
• Utility and high-current switchgear assemblies.