1SDA072311R1 ABB E2.2S 1250 Ekip Dip LI 3-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072311R1 E2.2S 1250 Ekip Dip LI Air Circuit Breaker?

The ABB 1SDA072311R1 is a high-performance SACE Emax 2 E2.2S air circuit breaker designed for reliable switching and protection in demanding low-voltage electrical distribution systems. This three-pole withdrawable moving-part configuration has a rated uninterrupted current of 1250 A and incorporates the Ekip Dip LI solid-state electronic trip unit.

As part of the ABB SACE Emax 2 range, the E2.2S combines substantial short-circuit performance with electronic protection for industrial, commercial and infrastructure switchboards. The Ekip Dip LI release provides long-time overload and instantaneous short-circuit protection, offering a straightforward protection solution where short-time delayed and integrated earth-fault functions are not required.

The E2.2S 1250 performance level provides a rated ultimate short-circuit breaking capacity of 85 kA at 440 V AC and a rated short-time withstand current of 66 kA for 1 s. Its withdrawable moving-part construction and four auxiliary contacts support maintainable switchboard installations where dependable protection and clear breaker status indication are important.

Key Advantages

• High-performance 1250 A Emax 2 air circuit breaker for demanding low-voltage distribution.
• Ekip Dip LI solid-state electronic trip unit for dependable circuit protection.
• Provides long-time overload and instantaneous short-circuit protection.
• High 85 kA ultimate short-circuit breaking capacity at 440 V AC.
• 66 kA rated short-time withstand current for 1 s.
• Three-pole configuration for three-phase electrical distribution systems.
• Withdrawable moving-part construction supports efficient inspection, servicing and replacement.
• Fitted with four auxiliary contacts and breaker open/closed position indication.

Key Features

• ABB SACE Emax 2 E2.2S air circuit breaker.
• 1250 A rated uninterrupted current.
• Three-pole configuration.
• Ekip Dip LI solid-state electronic release.
• Long-time overload protection (L).
• Instantaneous short-circuit protection (I).
• 85 kA ultimate short-circuit breaking capacity at 440 V AC.
• 66 kA rated short-time withstand current for 1 s.
• Moving part for a withdrawable Emax 2 circuit breaker.
• Fitted with four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Designed for AC low-voltage power distribution applications.

High-Performance LI Protection for Low-Voltage Distribution

Air circuit breakers such as the ABB Emax 2 E2.2S provide essential switching and fault protection for high-current low-voltage networks. The Ekip Dip LI electronic release provides long-time protection against sustained overload conditions together with instantaneous operation during severe short circuits, helping protect conductors, busbars, switchgear and connected electrical equipment.

The E2.2S performance level combines a substantial 85 kA ultimate breaking capacity at 440 V AC with a 66 kA short-time withstand rating for 1 s. Combined with ABB's withdrawable Emax 2 architecture, the 1SDA072311R1 provides a robust and maintainable protection solution for demanding industrial, commercial and infrastructure distribution systems.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution networks.
• Manufacturing and process-industry switchgear.
• Commercial building electrical infrastructure.
• Transformer secondary distribution systems.
• Generator and plant electrical distribution.
• Critical-power and infrastructure installations.