1SDA072312R1 ABB E2.2S 1250 Ekip Dip LSI 3-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072312R1 E2.2S 1250 Ekip Dip LSI Air Circuit Breaker?

The ABB 1SDA072312R1 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 LSI electronic trip unit.

As part of the ABB SACE Emax 2 range, the E2.2S combines high short-circuit performance with adjustable electronic protection for industrial, commercial and infrastructure switchboards. The Ekip Dip LSI release provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection, supporting effective protection coordination across complex distribution networks.

The E2.2S 1250 provides a rated ultimate short-circuit breaking capacity of 85 kA at 415 V AC and a rated short-time withstand current of 66 kA for 1 s. Its withdrawable moving-part construction connects through a separate chassis part, supporting efficient inspection, servicing and replacement in compatible ABB Emax 2 switchgear.

Key Advantages

• High-performance 1250 A Emax 2 air circuit breaker for demanding low-voltage distribution.
• Ekip Dip LSI electronic trip unit with adjustable protection functions.
• Provides long-time, short-time and instantaneous protection.
• High 85 kA ultimate short-circuit breaking capacity at 415 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 servicing and replacement.
• Short-time protection supports selective coordination with downstream protective devices.

Key Features

• ABB SACE Emax 2 E2.2S air circuit breaker.
• 1250 A rated uninterrupted current.
• Three-pole configuration.
• Ekip Dip LSI electronic protection release.
• Long-time overload protection (L).
• Short-time delayed short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Overload release adjustment range of 500–1250 A.
• 85 kA ultimate short-circuit breaking capacity at 415 V AC.
• 66 kA short-time withstand current for 1 s.
• Withdrawable moving part for compatible ABB Emax 2 fixed parts.
• Main-circuit connection through a separate chassis part.

Selective LSI Protection for Low-Voltage Power Distribution

The ABB Emax 2 E2.2S combines high-current switching with adjustable electronic protection for demanding low-voltage networks. Its Ekip Dip LSI release provides long-time protection against sustained overloads, short-time delayed protection for coordinated fault clearing and instantaneous protection against severe short circuits, helping protect cables, busbars, switchgear and connected equipment.

The short-time protection function makes this LSI configuration particularly suitable for systems where selectivity between upstream and downstream protective devices is important. Combined with an 85 kA ultimate breaking capacity and 66 kA short-time withstand current, the 1SDA072312R1 provides robust protection for high-demand electrical distribution installations.

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.