1SDA071211R1 ABB E4.2H 4000 Ekip Dip LI 3p F HR Air Circuit Breaker

Why Choose the ABB E4.2H 4000 Ekip Dip LI 3p F HR Air Circuit Breaker?

The ABB E4.2H 4000 Ekip Dip LI 3p F HR, order code 1SDA071211R1, is a high-performance air circuit breaker (ACB) designed for protection, control and isolation in high-current low-voltage electrical distribution systems. Part of the ABB SACE Emax 2 series, this fixed three-pole circuit breaker combines a 4000 A current rating with the Ekip Dip LI electronic trip unit.

The Ekip Dip LI release provides long-time overload and instantaneous short-circuit protection. This electronic protection combination provides dependable protection for conductors, switchgear and connected equipment where LI functionality is required, without the short-time delayed or integrated earth-fault protection functions associated with LSI and LSIG configurations.

The E4.2H performance level provides a 100 kA short-circuit breaking capacity and is rated for operation up to 690 V AC. This version features a fixed three-pole construction with rear flat horizontal terminals and compact E4.2 dimensions for integration into high-current low-voltage switchboards.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage power distribution.
• 4000 A current rating for substantial high-current electrical installations.
• 100 kA short-circuit breaking capacity for high fault-level systems.
• Ekip Dip LI electronic trip unit for overload and instantaneous short-circuit protection.
• LI protection provides straightforward electronic protection where short-time delayed and earth-fault functions are not required.
• Suitable for electrical distribution systems operating up to 690 V AC.
• Fixed three-pole construction for permanent switchboard installations.
• Rear flat horizontal terminals support practical integration into low-voltage assemblies.

Key Features

• ABB SACE Emax 2 E4.2H series.
• 4000 A current rating.
• Three-pole fixed air circuit breaker.
• Ekip Dip LI electronic protection release.
• Long-time overload (L) protection.
• Instantaneous short-circuit (I) protection.
• 100 kA breaking capacity.
• 690 V AC voltage rating.
• H short-circuit performance level.
• Rear flat horizontal main circuit terminals.
• Compact E4.2 frame construction.
• Designed for integration into IEC low-voltage switchgear assemblies.

Reliable High-Current Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 provide protection, switching and isolation for major low-voltage electrical distribution circuits. With a 4000 A current rating and 100 kA breaking capacity, the E4.2H is suited to substantial main distribution systems where high current capacity and strong short-circuit interruption performance are required.

The Ekip Dip LI electronic trip unit combines long-time overload protection with instantaneous short-circuit protection. This LI configuration is well suited to applications where straightforward electronic overload and high-current fault protection are required without short-time delayed or integrated earth-fault protection functions.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution and manufacturing facilities.
• High-current main incomer applications.
• Transformer secondary circuit protection.
• High fault-level electrical distribution systems.
• Commercial buildings and infrastructure electrical systems.
• Large industrial switchboards and distribution assemblies.
• Critical power distribution installations.
• OEM switchgear and electrical panel building.