1SDA071142R1 ABB E4.2N 3200 Ekip Dip LSI 3p F HR Air Circuit Breaker

Why Choose the ABB E4.2N 3200 Ekip Dip LSI 3p F HR Air Circuit Breaker?

The ABB E4.2N 3200 Ekip Dip LSI 3p F HR, order code 1SDA071142R1, 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 3200 A rated uninterrupted current with the Ekip Dip LSI solid-state electronic trip unit.

The Ekip Dip LSI release provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. The LSI configuration enables adjustable electronic protection and effective coordination with downstream protective devices, while avoiding integrated earth-fault protection where that function is not required.

The E4.2N 3200 provides an ultimate short-circuit breaking capacity of 66 kA at operating voltages up to 690 V AC and a short-time withstand current of 66 kA for 1 s. This version features a fixed three-pole construction with rear horizontal terminals, four auxiliary contacts and circuit-breaker open/closed position indication.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage power distribution.
• 3200 A rated uninterrupted current for high-current electrical installations.
• 66 kA ultimate short-circuit breaking capacity at operating voltages up to 690 V AC.
• 66 kA short-time withstand current for 1 s for robust fault management and coordination.
• Ekip Dip LSI solid-state electronic trip unit for configurable overload and short-circuit protection.
• LSI functionality provides long-time, short-time delayed and instantaneous protection.
• 100% service short-circuit breaking capacity relative to Icu.
• Fixed three-pole construction with rear horizontal terminals.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 3200 A rated uninterrupted current.
• Three-pole fixed air circuit breaker.
• Ekip Dip LSI solid-state electronic protection release.
• Long-time overload (L), short-time delayed (S) and instantaneous short-circuit (I) protection.
• 66 kA Icu at 400–690 V AC.
• 66 kA Ics at operating voltages up to 690 V AC.
• 66 kA Icw for 1 s and 50 kA Icw for 3 s.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• Rear horizontal bolted main circuit connections.
• Four auxiliary contacts with open/closed circuit-breaker position indication.

Advanced Circuit Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 protect low-voltage electrical distribution systems against overloads and short circuits while providing dependable switching and isolation. The E4.2N frame combines a substantial 3200 A current capability with 66 kA short-circuit interruption and withstand performance, making it suitable for main distribution systems and other high-current electrical installations.

The Ekip Dip LSI electronic trip unit combines long-time overload, short-time delayed and instantaneous short-circuit protection. Short-time protection supports selective coordination with downstream protective devices, helping engineers isolate faults while maintaining continuity on unaffected parts of the electrical distribution system.

Typical Applications

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