1SDA072042R1 ABB E1.2N 250 Ekip Dip LSI 3p WMP Air Circuit Breaker

Why Choose the ABB E1.2N 250 Ekip Dip LSI 3p WMP Air Circuit Breaker?

The ABB E1.2N 250 Ekip Dip LSI 3p WMP, order code 1SDA072042R1, is a compact air circuit breaker (ACB) moving part from the ABB SACE Emax 2 series, designed for protection and switching in low-voltage power distribution systems. With a rated uninterrupted current of 250 A, three-pole construction and ABB's Ekip Dip LSI electronic trip technology, it provides dependable protection for industrial, commercial and infrastructure electrical installations.

The Ekip Dip LSI solid-state electronic trip unit provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. Compared with an LI release, the additional short-time protection function gives engineers greater flexibility when coordinating upstream and downstream protective devices and developing selective distribution systems.

The 1SDA072042R1 is the withdrawable moving part (WMP) of the Emax 2 E1.2 circuit breaker system and is designed for use with a compatible fixed part. The E1.2N platform provides a rated ultimate short-circuit breaking capacity of 66 kA at 440 V AC and a rated short-time withstand current of 50 kA for 1 s, combining compact dimensions with strong fault-clearing performance.

Key Advantages

• Compact 250 A Emax 2 air circuit breaker moving part for low-voltage distribution systems.
• Three-pole construction for three-phase AC electrical networks.
• Ekip Dip LSI electronic trip unit for comprehensive overcurrent protection.
• Long-time, short-time and instantaneous protection functions support effective protection coordination.
• 66 kA ultimate short-circuit breaking capacity at 440 V AC.
• 50 kA short-time withstand current for 1 s supports selective distribution system design.
• Withdrawable moving-part design facilitates isolation, inspection and maintenance when used with the corresponding fixed part.

Key Features

• ABB SACE Emax 2 E1.2N series.
• 250 A rated uninterrupted current.
• Three-pole construction.
• Ekip Dip LSI solid-state electronic release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• DIP-switch-based protection setting interface.
• 66 kA Icu at 440 V AC.
• 50 kA Icw for 1 s.
• Withdrawable moving part for integration with the corresponding Emax 2 fixed part.
• Designed for compact low-voltage switchgear and distribution applications.

Selective Electronic Protection for Low-Voltage Distribution

Air circuit breakers such as the ABB SACE Emax 2 E1.2N provide switching, isolation and protection for low-voltage electrical distribution circuits. The compact E1.2 frame combines strong short-circuit performance with a withdrawable architecture, allowing the moving part to be disconnected from its corresponding fixed part for maintenance, inspection or replacement.

The Ekip Dip LSI electronic trip unit adds short-time protection to the long-time and instantaneous functions, providing greater flexibility for selective protection schemes. By introducing an adjustable short-time response between overload and instantaneous protection, the breaker can support improved coordination with downstream protective devices in appropriately engineered distribution networks.

Typical Applications

• Low-voltage power distribution switchboards.
• Industrial electrical distribution systems.
• Commercial building power distribution.
• Manufacturing and process installations.
• Incoming and feeder circuit protection.
• Distribution systems requiring LSI protection and improved selectivity.
• Withdrawable switchgear requiring convenient isolation and maintenance.