1SDA071197R1 ABB E4.2N 4000 Ekip G Touch LSIG 3p F HR Air Circuit Breaker

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

The ABB E4.2N 4000 Ekip G Touch LSIG 3p F HR, order code 1SDA071197R1, is a high-performance air circuit breaker (ACB) designed for generator protection and demanding low-voltage power distribution systems. Part of the ABB SACE Emax 2 series, this fixed three-pole circuit breaker combines a 4000 A rated current with the Ekip G Touch LSIG electronic trip unit.

The Ekip G Touch LSIG release provides long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault protection, together with functionality intended for generator applications. Its configurable electronic protection platform supports effective coordination, supervision and protection of generators and high-current distribution circuits.

The E4.2N performance level provides an ultimate short-circuit breaking capacity of 66 kA at 400–690 V AC, with a service breaking capacity equal to 100% of Icu and a short-time withstand current of 66 kA for 1 s. This version features a fixed three-pole construction with rear horizontal terminals and four auxiliary change-over contacts.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for generator and power distribution applications.
• 4000 A rated current for substantial high-current electrical installations.
• 66 kA ultimate short-circuit breaking capacity across 400–690 V AC.
• 66 kA short-time withstand current for 1 s for effective protection coordination.
• Advanced Ekip G Touch LSIG electronic trip unit with generator-oriented protection functionality.
• Integrated earth-fault protection alongside overload and short-circuit protection.
• 100% service short-circuit breaking capacity relative to Icu.
• Fixed three-pole construction with rear horizontal terminals.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated current.
• Three-pole fixed air circuit breaker.
• Ekip G Touch LSIG electronic protection release.
• Long-time overload (L), short-time delayed (S), instantaneous short-circuit (I) and earth-fault (G) protection.
• Generator-oriented electronic protection functionality.
• 66 kA Icu 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.
• Rear horizontal main circuit connections.
• Four auxiliary change-over contacts with open/closed position indication.

Advanced Generator and Power Distribution Protection

Generator circuits can require specialised protection because their operating and fault characteristics differ from conventional utility-fed distribution systems. The ABB E4.2N 4000 with Ekip G Touch combines a substantial 4000 A current capability with generator-oriented electronic protection, making it suitable for generator switchboards, standby power systems and industrial generation installations.

The Ekip G Touch LSIG release combines long-time overload, short-time delayed, instantaneous short-circuit and earth-fault protection with configurable functionality for generator applications. Together with the E4.2N frame's 66 kA breaking capacity and short-time withstand capability, this supports selective coordination, dependable fault isolation and protection of generators, conductors, switchgear and connected equipment.

Typical Applications

• Generator protection and generator switchboards.
• Standby and emergency generation systems.
• Industrial generation and power distribution installations.
• Main low-voltage electrical distribution switchboards.
• High-current main incomer applications.
• Systems requiring integrated earth-fault protection.
• Commercial and infrastructure power systems.
• Data centres and critical power distribution systems.
• OEM switchgear and electrical panel building.