1SDA073180R1 ABB E4.2N 4000 Ekip G Hi-Touch LSIG 4p WMP Air Circuit Breaker 4000 A

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

The ABB E4.2N 4000 Ekip G Hi-Touch LSIG 4p WMP, order code 1SDA073180R1, is a high-performance SACE Emax 2 air circuit breaker engineered for generator protection and demanding low-voltage power-distribution systems. This four-pole withdrawable moving part combines a rated uninterrupted current of 4000 A with ABB's advanced Ekip G Hi-Touch LSIG electronic trip unit.

The Ekip G Hi-Touch LSIG release combines generator-oriented functionality with comprehensive long-time, short-time, instantaneous and earth-fault protection. Its advanced protection, measurement and monitoring capabilities support sophisticated generating installations and electrical networks where accurate coordination, system supervision and dependable fault protection are essential.

The E4.2N 4000 provides an ultimate short-circuit breaking capacity of 66 kA at 400–690 V AC, with a rated service breaking capacity equal to 100% of Icu. A short-time withstand current of 66 kA for 1 s, four-pole construction and withdrawable configuration make it particularly suitable for generator switchboards, main distribution boards and critical high-current installations.

Key Advantages

• Advanced ABB SACE Emax 2 air circuit breaker designed for generator and high-current distribution applications.
• 4000 A rated uninterrupted current for substantial electrical loads.
• Four-pole configuration with 100% neutral pole current capability.
• Advanced Ekip G Hi-Touch LSIG electronic trip unit.
• LSIG functionality provides long-time, short-time, instantaneous and earth-fault protection.
• 66 kA ultimate short-circuit breaking capacity up to 690 V AC.
• Ics equal to 100% of Icu for robust service short-circuit performance.
• Withdrawable moving-part design supports convenient isolation, inspection and maintenance.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated uninterrupted current.
• Four-pole air circuit breaker.
• 100% neutral pole current.
• Ekip G Hi-Touch electronic trip unit with generator-oriented protection functionality.
• LSIG protection functions for overload, short-circuit and earth-fault protection.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 66 kA Icu at 400–690 V AC.
• 66 kA Icw for 1 s and 50 kA for 3 s.
• 100% Ics/Icu ratio.
• Four auxiliary contacts plus trip indication contact.
• Withdrawable moving-part configuration for a separately ordered compatible fixed part.

Advanced Generator Protection and Power Management

ABB SACE Emax 2 air circuit breakers are engineered for dependable switching and protection in high-current low-voltage installations. The E4.2N 4000 combines a substantial 4000 A uninterrupted-current rating with 66 kA short-circuit breaking capacity across operating voltages up to 690 V AC, providing robust performance for generator switchboards and major electrical distribution systems.

The Ekip G Hi-Touch LSIG electronic trip unit is oriented towards generator and advanced power-system protection, combining long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault functions with sophisticated measurement and supervision capabilities. This enables precise protection coordination and helps isolate electrical faults while maintaining continuity of service in unaffected sections of the installation.

Typical Applications

• Generator protection and generator switchboards.
• Low-voltage main distribution switchboards.
• High-current industrial power distribution systems.
• Transformer and installation protection.
• Manufacturing and process-industry electrical systems.
• Infrastructure and critical power distribution.
• High-current switchgear and power-generation installations.