1SDA071322R1 ABB E1.2N 250 Ekip Dip LSI 4p F F Air Circuit Breaker 250 A

Why Choose the ABB E1.2N 250 Ekip Dip LSI 4p F F Air Circuit Breaker?

The ABB E1.2N 250 Ekip Dip LSI 4p F F, order code 1SDA071322R1, is a compact four-pole air circuit breaker (ACB) designed for switching and protection in low-voltage power distribution systems. As part of the advanced ABB SACE Emax 2 series, this fixed circuit breaker combines a 250 A rated current, high short-circuit performance and an Ekip Dip LSI electronic protection release.

The integrated Ekip Dip LSI electronic trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. Protection parameters are configured using DIP switches, providing straightforward adjustment and effective selectivity for industrial, commercial and infrastructure distribution networks.

With a rated operational voltage of 690 V AC and an ultimate short-circuit breaking capacity of 66 kA at 400/415 V AC, the E1.2N 250 provides robust protection in a compact Emax 2 frame. This version features a four-pole fixed configuration with front terminals, making it suitable for switchboards requiring switched neutral conductors and accessible front connections.

Key Advantages

• Compact ABB SACE Emax 2 air circuit breaker for low-voltage power distribution.
• 250 A rated current for industrial and commercial distribution systems.
• 66 kA Icu at 400/415 V AC for dependable short-circuit interruption.
• Advanced Ekip Dip LSI electronic protection release.
• Long-time, short-time and instantaneous protection functions support effective circuit coordination.
• Four-pole construction with 100% neutral pole current capability.
• Fixed mounting provides straightforward integration into switchboards.
• Front terminals provide convenient main circuit connection and installation access.

Key Features

• ABB SACE Emax 2 E1.2N series.
• 250 A rated current.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 66 kA Icu at 400/415 V AC.
• 50 kA Icu at 690 V AC.
• 50 kA rated short-time withstand current for 1 s.
• Ekip Dip LSI electronic release with DIP-switch adjustment.
• Long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection.
• Four-pole fixed configuration with front terminals.
• High mechanical and electrical endurance for dependable service.

Selective Protection for Low-Voltage Distribution Systems

Air circuit breakers such as the ABB Emax 2 E1.2N provide switching and protection for low-voltage electrical distribution systems. By detecting overload and short-circuit conditions and interrupting fault current, the breaker helps protect switchboards, cables, busbars and connected electrical equipment while supporting safe and dependable system operation.

The Ekip Dip LSI release provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. Its adjustable short-time function supports selective coordination with other protective devices, while the four-pole configuration allows the neutral conductor to be switched together with the three phases in applications where this is required.

Typical Applications

• Low-voltage main and sub-distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Four-wire three-phase distribution networks.
• Transformer secondary-side protection.
• Manufacturing and process industry installations.
• Infrastructure and utility distribution systems.
• Power distribution panels requiring switched neutral conductors.