1SDA072192R1 ABB E1.2N 1250 Ekip Dip LSI 3p WMP Air Circuit Breaker 1250 A

Why Choose the ABB E1.2N 1250 Ekip Dip LSI 3p WMP Air Circuit Breaker?

The ABB E1.2N 1250 Ekip Dip LSI 3p WMP, order code 1SDA072192R1, is a high-performance three-pole air circuit breaker from the ABB SACE Emax 2 range, designed for protection and switching in low-voltage electrical distribution systems. Rated at 1250 A, it combines the compact E1.2 frame with ABB's electronic Ekip Dip LSI trip unit for dependable overload, short-time delayed and instantaneous short-circuit protection.

This Emax 2 circuit breaker is supplied as a withdrawable moving part for integration with a compatible E1.2 fixed part in switchgear assemblies. The E1.2N performance level provides a rated ultimate short-circuit breaking capacity of 66 kA at 400 V AC, making the breaker suitable for demanding industrial, commercial and infrastructure power distribution applications.

With a rated uninterrupted current of 1250 A and a rated operational voltage of 690 V AC, the 1SDA072192R1 provides robust protection for high-current low-voltage installations. Its Ekip Dip LSI electronic release adds adjustable short-time delayed protection to the standard long-time and instantaneous functions, providing greater selectivity and coordination within complex electrical distribution networks.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for low-voltage power distribution.
• 1250 A rated uninterrupted current for demanding electrical installations.
• Three-pole configuration for three-phase power distribution systems.
• Ekip Dip LSI electronic trip unit providing overload, short-time delayed and instantaneous short-circuit protection.
• Rated ultimate short-circuit breaking capacity of 66 kA at 400 V AC.
• Rated operational voltage of 690 V AC.
• Adjustable overload protection range of 500–1250 A.
• Withdrawable moving-part construction supports efficient switchgear servicing and maintenance.

Key Features

• ABB SACE Emax 2 E1.2N series.
• 1250 A rated uninterrupted current.
• Three-pole (3P) configuration.
• Ekip Dip LSI solid-state electronic release.
• 690 V AC rated operational voltage.
• 66 kA Icu at 400 V AC, 50 Hz.
• 500–1250 A adjustable overload release range.
• 750–12500 A adjustable short-time delayed short-circuit release range.
• 1875–18750 A adjustable instantaneous short-circuit release range.
• Withdrawable moving-part design for compatible Emax 2 switchgear.
• Supplied with four change-over auxiliary contacts.
• Circuit breaker open/closed position indication.

Reliable Circuit Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 provide switching and protection for high-current low-voltage distribution circuits. By detecting overload and short-circuit conditions, the electronic trip unit can initiate circuit interruption to help protect cables, switchgear and connected electrical equipment from damaging fault currents.

The Ekip Dip LSI release combines long-time overload protection with adjustable short-time delayed and instantaneous short-circuit protection. The additional short-time protection function supports selective coordination between protective devices, helping isolate faults at the appropriate point in a distribution network while maintaining supply to unaffected circuits wherever the system design permits.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical infrastructure.
• Manufacturing and process plant switchgear.
• Transformer and installation protection.
• Power distribution panels and switchgear assemblies.
• Infrastructure and utility installations.
• Three-phase distribution networks requiring selective short-circuit protection.