1SDA071823R1 ABB E4.2N 4000 Ekip Dip LSIG 4p FHR Air Circuit Breaker

Why Choose the ABB E4.2N 4000 Ekip Dip LSIG 4p FHR Air Circuit Breaker?

The ABB 1SDA071823R1 is a high-current Emax 2 air circuit breaker (ACB) designed for reliable protection, switching and isolation in demanding low-voltage electrical distribution systems. Identified as the E4.2N 4000 Ekip Dip LSIG 4p FHR, this four-pole fixed circuit breaker combines a 4000 A rated current with ABB’s Ekip Dip LSIG solid-state electronic trip unit.

As part of the ABB SACE Emax 2 series, the E4.2N provides dependable short-circuit performance together with adjustable electronic protection. The Ekip Dip LSIG release provides long-time overload, short-time selective short-circuit, instantaneous short-circuit and earth-fault protection, enabling comprehensive protection and coordination throughout industrial and commercial power-distribution systems.

With a rated operational voltage of 690 V AC and an ultimate short-circuit breaking capacity of 66 kA across 380–690 V AC, the 1SDA071823R1 is suitable for high-current installations requiring robust fault interruption. Its four-pole fixed construction and rear flat horizontal terminals provide a practical configuration for permanent integration into low-voltage switchboards and distribution assemblies.

Key Advantages

• High-current ABB Emax 2 air circuit breaker for demanding low-voltage power distribution.
• 4000 A rated uninterrupted current for large industrial and infrastructure installations.
• 66 kA Icu across 380–690 V AC for dependable short-circuit interruption.
• Four-pole configuration for switching and protection of three phases and neutral.
• Advanced Ekip Dip LSIG electronic trip unit with overload, short-circuit and earth-fault protection.
• 66 kA short-time withstand current for 1 s supports selective protection strategies.
• Fixed construction with rear flat horizontal terminals for switchboard installation.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated current.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 66 kA Icu across 380–690 V AC.
• 66 kA Ics with service breaking capacity equal to 100% of Icu.
• Ekip Dip LSIG solid-state electronic protection release.
• Long-time, short-time selective, instantaneous and earth-fault protection functions.
• Protection settings configured using DIP switches.
• 4-pole fixed circuit breaker configuration.
• Rear flat horizontal main terminals.
• Four auxiliary contacts with circuit-breaker open/closed position indication.
• Suitable for 690 V IT networks.

Comprehensive High-Current Circuit Protection

Air circuit breakers such as the ABB Emax 2 E4.2N provide switching, isolation and protection for high-current low-voltage electrical systems. The E4.2N 4000 combines a substantial 4000 A current rating with a consistent 66 kA ultimate breaking capacity across a wide operating-voltage range, making it suitable for main distribution positions and other critical points within industrial switchboards.

The Ekip Dip LSIG electronic trip unit provides adjustable long-time overload, short-time selective short-circuit, instantaneous short-circuit and earth-fault protection. DIP-switch adjustment allows the protection characteristics to be matched to the electrical installation, supporting selectivity and helping protect cables, busbars, transformers and connected equipment against damaging overcurrents and earth faults.

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 and switchboards.
• High-current installations requiring integrated earth-fault protection.