1SDA071782R1 ABB E4.2S 3200 Ekip Dip LSI 4p FHR Air Circuit Breaker

Why Choose the ABB E4.2S 3200 Ekip Dip LSI 4p FHR Air Circuit Breaker?

The ABB 1SDA071782R1 is a high-performance Emax 2 air circuit breaker (ACB) designed for protection, switching and isolation in demanding low-voltage electrical distribution systems. Identified as the E4.2S 3200 Ekip Dip LSI 4p FHR, this four-pole fixed circuit breaker combines a 3200 A rated current with ABB’s Ekip Dip LSI solid-state electronic trip unit for dependable circuit protection.

As part of the ABB SACE Emax 2 series, the E4.2S provides high short-circuit performance together with configurable electronic protection. The Ekip Dip LSI release provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection, enabling effective coordination and selectivity within industrial and commercial power-distribution installations.

With a rated operational voltage of up to 690 V AC and an ultimate short-circuit breaking capacity of 85 kA at 400–415 V AC, the 1SDA071782R1 is suitable for high-current installations where dependable fault interruption is essential. Its fixed four-pole construction and rear horizontal terminals provide a practical configuration for integration into low-voltage switchboards and distribution assemblies.

Key Advantages

• High-performance ABB Emax 2 air circuit breaker for low-voltage power distribution.
• 3200 A rated current for demanding high-current installations.
• 85 kA Icu at 400–415 V AC for reliable short-circuit interruption.
• Four-pole configuration for switching and protection of three phases and neutral.
• Advanced Ekip Dip LSI electronic trip unit for overload and short-circuit protection.
• 66 kA short-time withstand current for 1 s supports selective protection strategies.
• Fixed construction with rear horizontal terminals for switchboard installation.

Key Features

• ABB SACE Emax 2 E4.2S series.
• 3200 A rated current.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 85 kA Icu at 400–415 V AC.
• 66 kA rated short-time withstand current for 1 s.
• Ekip Dip LSI solid-state electronic protection release.
• Long-time, short-time delayed and instantaneous protection functions.
• 4-pole fixed circuit breaker configuration.
• Rear horizontal main terminals.
• Four auxiliary change-over contacts and open/closed position indication.

Reliable High-Current Circuit Protection

Air circuit breakers such as the ABB Emax 2 E4.2S provide switching, isolation and protection for high-current low-voltage electrical systems. The E4.2S performance level combines a 3200 A current rating with substantial short-circuit interruption capability, making it suitable for main distribution and other critical positions within industrial switchboards.

The Ekip Dip LSI electronic trip unit provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. Adjustable protection settings allow the breaker to be coordinated with other protective devices within an electrical installation, helping maintain selectivity while protecting cables, busbars, transformers and connected equipment against damaging overcurrents.

Typical Applications

• Main incomer protection in low-voltage switchboards.
• Industrial power distribution systems.
• Transformer and installation protection.
• Manufacturing and process plants.
• Commercial and infrastructure electrical distribution.
• Data centres and critical power installations.
• Large electrical distribution panels.
• High-current industrial installations.