1SDA072548R1 ABB E4.2N 4000 Ekip Hi-Touch LSI 3p WMP Air Circuit Breaker

Why Choose the ABB E4.2N 4000 Ekip Hi-Touch LSI 3p WMP Air Circuit Breaker?

The ABB E4.2N 4000 Ekip Hi-Touch LSI 3p WMP, order code 1SDA072548R1, is a high-performance SACE Emax 2 air circuit breaker moving part designed for protection, control and advanced management of demanding low-voltage electrical distribution systems. As part of the ABB SACE Emax 2 E4.2 series, this three-pole withdrawable breaker combines a 4000 A rated current with the advanced Ekip Hi-Touch LSI electronic trip unit.

The Ekip Hi-Touch LSI release provides long-time overload, short-time short-circuit and instantaneous short-circuit protection together with advanced measurement, monitoring and power-management capabilities. This combination makes the breaker particularly suitable for sophisticated industrial and infrastructure installations where dependable protection, selectivity and detailed electrical information are required.

The E4.2N performance level provides an ultimate short-circuit breaking capacity of 66 kA at 415 V AC and 66 kA at 690 V AC. This WMP configuration is the withdrawable moving part and is supplied with four auxiliary changeover contacts, enabling flexible installation and maintenance when paired with a compatible Emax 2 E4.2 fixed part.

Key Advantages

• High-performance ABB SACE Emax 2 E4.2N air circuit breaker for demanding power distribution.
• 4000 A rated uninterrupted current for high-current electrical systems.
• Three-pole withdrawable design supports efficient servicing and maintenance.
• Advanced Ekip Hi-Touch LSI electronic trip unit.
• 66 kA breaking capacity at 415 V AC for robust fault interruption.
• LSI protection provides overload, delayed short-circuit and instantaneous short-circuit protection.
• Advanced Emax 2 platform supports measurement, diagnostics, communication and energy-management functions.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated uninterrupted current.
• Three-pole configuration.
• Withdrawable moving-part execution.
• Ekip Hi-Touch LSI solid-state electronic protection release.
• 66 kA Icu at 415 V AC.
• 66 kA Icu at 690 V AC.
• 690 V AC rated operational voltage.
• 12 kV rated impulse withstand voltage.
• Four auxiliary changeover contacts.
• Breaker open/closed position indication.
• Optional motor operating mechanism capability.

Advanced Protection and Power Management

ABB SACE Emax 2 air circuit breakers are engineered to protect low-voltage networks while providing the advanced functionality required by modern electrical distribution systems. The E4.2N frame combines a substantial 4000 A continuous-current rating with strong short-circuit performance, making it suitable for main switchboards, transformer distribution systems and critical high-current installations.

The Ekip Hi-Touch LSI trip unit combines adjustable long-time, short-time and instantaneous protection with sophisticated measurement and monitoring functionality. This allows the breaker to protect cables, busbars, transformers and downstream equipment while supporting selective coordination, diagnostics and integration into advanced automation and energy-management systems.

Typical Applications

• Industrial low-voltage main distribution switchboards.
• Transformer and power distribution systems.
• Power distribution centres and electrical substations.
• Manufacturing and process-industry electrical systems.
• Data centres and critical power installations.
• Large commercial and infrastructure electrical systems.
• High-current switchboards requiring withdrawable circuit breakers.