1SDA071827R1 ABB E4.2N 4000 Ekip G Touch LSIG 4p FHR Air Circuit Breaker 4000 A

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

The ABB E4.2N 4000 Ekip G Touch LSIG 4p FHR, order code 1SDA071827R1, is a high-current four-pole air circuit breaker (ACB) designed for generator protection and demanding low-voltage power distribution systems. Part of the ABB SACE Emax 2 series, it combines a 4000 A rated uninterrupted current with the advanced Ekip G Touch LSIG electronic protection release and the dependable short-circuit performance of the E4.2N frame.

This fixed circuit breaker incorporates the Ekip G Touch LSIG solid-state electronic trip unit, providing long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection together with generator-oriented protection capabilities. The Ekip Touch interface supports intuitive configuration and monitoring, making the breaker particularly suitable for generator switchboards, critical power systems and high-capacity distribution networks.

Rated for operation at up to 690 V AC, the E4.2N 4000 provides an ultimate short-circuit breaking capacity of 66 kA at both 400/415 V AC and 690 V AC, together with a 66 kA short-time withstand current for 1 s. This version features a fixed four-pole construction with rear flat horizontal terminals and four auxiliary contacts for integration into high-current switchboards.

Key Advantages

• High-current ABB SACE Emax 2 air circuit breaker for generator and power distribution applications.
• 4000 A rated uninterrupted current for large electrical installations and main distribution circuits.
• Four-pole configuration with the neutral pole rated at 100% of Iu.
• Advanced Ekip G Touch LSIG electronic trip unit with generator-oriented protection capabilities.
• Long-time, short-time, instantaneous and earth-fault protection in one electronic release.
• 66 kA ultimate short-circuit breaking capacity at 400/415 V AC and 690 V AC.
• 66 kA short-time withstand current for 1 s supports selective coordination in high-current systems.
• Touch interface for convenient protection configuration and electrical monitoring.
• Fixed configuration with rear flat horizontal terminals for switchboard integration.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated uninterrupted current.
• Four-pole construction.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• N short-circuit performance level.
• 66 kA Icu at 400/415 V AC.
• 66 kA Icu at 690 V AC.
• 100% Ics/Icu ratio.
• 66 kA short-time withstand current for 1 s.
• 50 kA short-time withstand current for 3 s.
• Ekip G Touch LSIG solid-state electronic protection release.
• Long-time overload, short-time, instantaneous and earth-fault protection functions.
• Generator-oriented protection functionality for power-generation applications.
• Overload protection adjustable from 1600–4000 A.
• Short-time short-circuit protection adjustable from 2400–40000 A.
• Instantaneous short-circuit protection adjustable from 6000–60000 A.
• Four auxiliary changeover contacts with circuit-breaker open/closed indication.
• Fixed circuit-breaker construction with rear flat horizontal terminals.

Advanced Generator and LSIG Power Protection

Generator circuits can require protection characteristics tailored to the electrical behaviour of generating equipment as well as conventional distribution protection. The ABB Ekip G Touch platform combines generator-oriented functionality with comprehensive LSIG protection against overloads, short circuits and earth faults, helping safeguard generators, cables, busbars, switchgear and connected equipment.

The E4.2N frame provides 66 kA Icu at 400/415 V AC and 690 V AC, together with a 66 kA short-time withstand current for 1 s. Combined with the Ekip G Touch LSIG release and a 4000 A current rating, the 1SDA071827R1 is particularly suited to generator switchboards and high-capacity distribution systems requiring advanced protection, monitoring and dependable fault interruption.

Typical Applications

• Generator protection and generator switchboards.
• Standby and emergency power generation systems.
• Main low-voltage electrical distribution switchboards.
• Critical power distribution networks.
• Industrial power generation and distribution systems.
• Manufacturing and process facilities.
• Large commercial buildings and infrastructure installations.
• High-current feeder and distribution circuits.
• Systems requiring integrated earth-fault and generator-oriented protection.