1SDA072944R1 ABB Emax 2 E2.2S 1250 Ekip Touch LI 4-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072944R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072944R1 is a high-performance Emax 2 E2.2S 1250 A four-pole air circuit breaker moving part designed for protection, switching and control in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax 2 air circuit breaker series, it combines robust withdrawable construction with the advanced Ekip Touch LI electronic trip unit.

The Ekip Touch LI release provides long-time overload (L) and instantaneous short-circuit (I) protection through ABB's touchscreen-based Ekip platform. Its intuitive interface supports straightforward protection configuration and monitoring, making the breaker suitable for modern distribution systems requiring dependable circuit protection and convenient system management.

With a rated current of 1250 A, a four-pole configuration, an ultimate short-circuit breaking capacity of 85 kA at 400–440 V AC and a rated short-time withstand current of 66 kA for 1 s, the 1SDA072944R1 provides dependable protection for high-current distribution circuits. Its withdrawable moving-part design enables integration with the appropriate Emax 2 E2.2 fixed part and supports 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 industrial, commercial and infrastructure installations.
• Four-pole configuration with 100% neutral for three-phase and neutral switching and protection.
• 85 kA ultimate short-circuit breaking capacity at 400–440 V AC.
• 66 kA rated short-time withstand current for 1 s.
• Advanced Ekip Touch LI electronic trip unit with intuitive touchscreen operation.
• LI protection provides long-time overload and instantaneous short-circuit protection.
• Withdrawable construction supports efficient switchboard inspection, maintenance and servicing.

Key Features

• ABB SACE Emax 2 E2.2S series.
• 1250 A rated uninterrupted current.
• Four-pole air circuit breaker moving part.
• Ekip Touch LI electronic protection release.
• Long-time overload (L) protection.
• Instantaneous short-circuit (I) protection.
• Overload release setting range of 500–1250 A.
• Instantaneous short-circuit release adjustment range of 1875–18750 A.
• 85 kA Icu at 400–440 V AC.
• 66 kA Icw for 1 s.
• 690 V AC rated operational voltage.
• Four changeover auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Withdrawable moving-part configuration for Emax 2 switchgear.
• Optional motor operating mechanism capability.

Advanced LI Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB Emax 2 E2.2S provide switching, isolation and protection for high-current low-voltage distribution circuits. The E2.2S performance level combines an 85 kA breaking capacity at 400–440 V AC with a 66 kA short-time withstand rating for 1 s, making it suitable for main switchboards and demanding distribution systems where reliable fault interruption and continuity of service are important.

The Ekip Touch LI trip unit provides long-time overload and instantaneous short-circuit protection through ABB's touchscreen-based Ekip platform. Combined with the E2.2S frame's high breaking performance and withdrawable architecture, the 1SDA072944R1 provides a flexible solution for sophisticated low-voltage power distribution systems requiring dependable protection, straightforward configuration 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.