1SDA072958R1 ABB Emax 2 E2.2H 1250 Ekip Hi-Touch LSI 4-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072958R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072958R1 is a high-performance Emax 2 E2.2H 1250 A four-pole air circuit breaker moving part designed for advanced protection, switching and control in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax 2 air circuit breaker series, it combines high short-circuit performance and withdrawable construction with the sophisticated Ekip Hi-Touch LSI electronic trip unit.

The Ekip Hi-Touch LSI release provides long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection. ABB's Hi-Touch platform adds advanced protection, measurement and monitoring capabilities, making this breaker well suited to sophisticated distribution systems where selectivity, system visibility and dependable fault protection are important.

With a rated current of 1250 A, a four-pole configuration and an ultimate short-circuit breaking capacity of 100 kA at 415 V AC and 85 kA at 690 V AC, the 1SDA072958R1 provides exceptional fault-interruption capability. Its withdrawable moving-part design enables installation with the appropriate Emax 2 E2.2 fixed part, supporting efficient inspection, servicing and replacement within switchgear assemblies.

Key Advantages

• High-performance ABB Emax 2 air circuit breaker moving part for demanding low-voltage power distribution.
• 1250 A rated current for high-current industrial, commercial and infrastructure applications.
• Four-pole configuration with the neutral pole rated at 100% of rated current.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• 85 kA ultimate short-circuit breaking capacity at 690 V AC.
• Advanced Ekip Hi-Touch LSI electronic trip unit.
• LSI protection covers long-time overload, short-time short-circuit and instantaneous short-circuit conditions.
• Advanced measurement and monitoring capabilities through the Ekip Hi-Touch platform.
• Withdrawable construction supports efficient switchboard inspection, maintenance and servicing.

Key Features

• ABB SACE Emax 2 E2.2H series.
• 1250 A rated current.
• Four-pole air circuit breaker moving part.
• Ekip Hi-Touch LSI electronic protection release.
• Long-time overload (L) protection.
• Short-time short-circuit (S) protection.
• Instantaneous short-circuit (I) protection.
• 100 kA Icu at 415 V AC.
• 85 kA Icu at 690 V AC.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 100% neutral pole current rating.
• Four changeover auxiliary contacts.
• Withdrawable moving-part configuration for Emax 2 switchgear.
• Optional motor operating mechanism capability.

Advanced LSI Protection for Critical Power Distribution

Air circuit breakers such as the ABB Emax 2 E2.2H provide switching, isolation and protection for high-current low-voltage distribution circuits. The E2.2H performance level delivers an ultimate short-circuit breaking capacity of 100 kA at 415 V AC and 85 kA at 690 V AC, making it particularly suitable for installations with high prospective fault currents and demanding continuity requirements.

The Ekip Hi-Touch LSI trip unit combines long-time overload, short-time short-circuit and instantaneous short-circuit protection with the advanced measurement and monitoring capabilities of ABB's Hi-Touch platform. Together with the E2.2H frame and withdrawable architecture, the 1SDA072958R1 provides a flexible solution for sophisticated low-voltage distribution systems requiring high breaking performance, advanced electronic protection and convenient maintenance.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical installations.
• Manufacturing and process plants.
• Power distribution and switchgear assemblies.
• Transformer-fed low-voltage distribution systems.
• Critical power and high-availability installations.