1SDA071822R1 ABB E4.2N 4000 Ekip Dip LSI 4p FHR Air Circuit Breaker

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

The ABB 1SDA071822R1 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 LSI 4p FHR, this four-pole fixed circuit breaker combines a 4000 A rated current with ABB’s Ekip Dip LSI 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 LSI release provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection, allowing effective coordination with other protective devices throughout industrial and commercial power-distribution systems.

With a rated operational voltage of up to 690 V AC and an ultimate short-circuit breaking capacity of 66 kA at 400 V AC, the 1SDA071822R1 is suitable for high-current installations requiring robust fault protection. Its four-pole fixed construction and rear horizontal terminals make it well suited to integration into low-voltage switchboards, transformer distribution systems and large industrial power 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 at 400 V AC for dependable short-circuit interruption.
• Four-pole configuration for switching and protection of three phases and neutral.
• Advanced Ekip Dip LSI electronic trip unit for adjustable overload and short-circuit protection.
• Wide protection adjustment ranges support coordinated and selective electrical protection.
• Fixed construction with rear horizontal terminals for permanent switchboard installation.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated uninterrupted current.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 66 kA Icu at 400 V AC.
• Ekip Dip LSI solid-state electronic protection release.
• Long-time overload, short-time delayed and instantaneous short-circuit protection.
• 1600–4000 A overload protection adjustment range.
• 2400–40000 A short-time delayed short-circuit adjustment range.
• 6000–60000 A instantaneous short-circuit adjustment range.
• 4-pole fixed circuit breaker configuration.
• Rear horizontal main terminals.
• Four auxiliary change-over contacts and circuit-breaker open/closed indication.

Reliable 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 electronic protection, making it suitable for main distribution positions where dependable protection of transformers, conductors, busbars and connected equipment is essential.

The Ekip Dip LSI electronic trip unit provides adjustable long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. Its wide adjustment ranges allow protection settings to be coordinated with the characteristics of the electrical installation and other protective devices, helping improve selectivity and continuity of service.

Typical Applications

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