1SDA072872R1 ABB Emax 2 E2.2N 800 Ekip Dip LSI 4-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072872R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072872R1 is a high-performance Emax 2 E2.2N 800 A four-pole air circuit breaker moving part designed for protection and control in low-voltage electrical distribution systems. As part of the advanced ABB SACE Emax 2 air circuit breaker series, it combines robust withdrawable construction with the reliable Ekip Dip LSI solid-state electronic trip unit.

This E2.2N circuit breaker is engineered for demanding industrial, commercial and infrastructure power distribution applications. The Ekip Dip LSI release provides long-time overload, short-time short-circuit and instantaneous short-circuit protection, helping protect electrical circuits and connected equipment against sustained overcurrents and severe fault conditions.

With a rated current of 800 A, a four-pole configuration and an ultimate short-circuit breaking capacity of 66 kA at 400–690 V AC, the 1SDA072872R1 provides dependable protection across a wide range of low-voltage distribution systems. 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 low-voltage power distribution.
• 800 A rated current for industrial and commercial electrical installations.
• Four-pole configuration for three-phase and neutral circuit switching and protection.
• 66 kA ultimate short-circuit breaking capacity up to 690 V AC.
• 66 kA short-time withstand current for 1 s.
• Reliable Ekip Dip LSI solid-state electronic trip unit.
• LSI protection provides long-time overload, short-time and instantaneous short-circuit protection.
• Withdrawable construction supports efficient switchboard inspection, maintenance and servicing.

Key Features

• ABB SACE Emax 2 E2.2N series.
• 800 A rated current.
• Four-pole air circuit breaker moving part.
• Ekip Dip LSI solid-state electronic protection release.
• Long-time overload (L) protection.
• Short-time short-circuit (S) protection.
• Instantaneous short-circuit (I) protection.
• 66 kA Icu at 400–690 V AC.
• 66 kA Icw for 1 s and 50 kA Icw for 3 s.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• Withdrawable moving-part configuration for Emax 2 switchgear.
• Fitted with four auxiliary contacts and circuit-breaker open/closed position indication.

Selective Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB Emax 2 E2.2N provide switching, isolation and protection for high-current low-voltage distribution circuits. They are commonly used in main switchboards and industrial distribution systems where high short-circuit performance and dependable protection are essential for maintaining electrical safety and system availability.

The Ekip Dip LSI trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. The addition of short-time protection allows greater flexibility when coordinating upstream and downstream protective devices, while the E2.2N frame's high breaking capacity and withdrawable architecture make the 1SDA072872R1 well suited to demanding power distribution and switchgear applications.

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.
• Generator and transformer distribution systems.
• Building services and critical power installations.