1SDA072549R1 ABB E4.2N 4000 Ekip Hi-Touch LSIG 3p WMP Air Circuit Breaker

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

The ABB 1SDA072549R1 is a high-performance SACE Emax 2 E4.2N air circuit breaker (ACB) designed for protection, control and management of demanding low-voltage electrical distribution systems. Rated at 4000 A, this three-pole breaker combines the E4.2 frame with ABB’s advanced Ekip Hi-Touch LSIG electronic trip unit for comprehensive circuit protection and intelligent power management.

As part of the ABB SACE Emax 2 series, the E4.2N is engineered for industrial switchboards, infrastructure, commercial buildings, data centres and other installations requiring high-current distribution protection. The Ekip Hi-Touch trip unit provides advanced long-time, short-time, instantaneous and earth-fault protection functions together with the sophisticated monitoring and connectivity capabilities associated with ABB’s Emax 2 platform.

The 1SDA072549R1 is the mobile part of a withdrawable circuit breaker (WMP) in a three-pole configuration. It has a rated uninterrupted current of 4000 A, 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 second, providing robust protection for high-power low-voltage distribution systems.

Key Advantages

• High-capacity 4000 A air circuit breaker for demanding LV distribution systems.
• 66 kA ultimate breaking capacity at 440 V AC for robust short-circuit protection.
• Advanced Ekip Hi-Touch LSIG electronic trip unit for comprehensive circuit protection.
• Long-time, short-time, instantaneous and earth-fault protection functions.
• Withdrawable mobile-part design supports efficient switchboard maintenance and servicing.
• Part of the modular ABB SACE Emax 2 platform with extensive communication and power-management options.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated uninterrupted current.
• Three-pole configuration.
• 66 kA Icu at 440 V AC.
• 66 kA Icw for 1 second.
• Advanced Ekip Hi-Touch LSIG trip unit.
• LSIG protection covering overload, selective short circuit, instantaneous short circuit and earth fault.
• Withdrawable mobile part (WMP) configuration for switchboard applications.
• Designed for integration with ABB Emax 2 communication, monitoring and energy-management solutions.

Advanced Circuit Protection and Power Management

Air circuit breakers such as the ABB SACE Emax 2 protect high-current low-voltage distribution systems against overloads, short circuits and other electrical faults. The E4.2 frame is designed for installations requiring high current capacity while maintaining a compact switchboard footprint and flexible integration with modern electrical distribution architectures.

The Ekip Hi-Touch electronic trip unit extends the breaker beyond conventional circuit protection by supporting advanced measurement, monitoring, protection and power-management functions. The modular Emax 2 platform can also accommodate communication solutions for integration with industrial automation, building-management and energy-management systems.

Typical Applications

• Main incoming protection for low-voltage switchboards.
• Industrial power distribution systems.
• Large commercial and infrastructure installations.
• Data centres and critical power distribution.
• Manufacturing plants and process facilities.
• Generator and transformer distribution systems.
• Intelligent switchgear and energy-management systems.