1SDA073182R1 ABB E4.2S 4000 Ekip Dip LSI 4p WMP Air Circuit Breaker

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

The ABB E4.2S 4000 Ekip Dip LSI 4p WMP, order code 1SDA073182R1, is a high-current four-pole withdrawable air circuit breaker moving part designed for dependable protection and switching in demanding low-voltage power distribution systems. Part of the ABB SACE Emax 2 series, it combines a 4000 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 selective short-circuit and instantaneous short-circuit protection. Adjustable electronic protection allows the breaker to be coordinated with upstream and downstream devices, supporting selectivity and reliable fault protection in industrial, commercial and infrastructure electrical networks.

This E4.2S configuration features a 4000 A rated uninterrupted current, four-pole construction and a rated operational voltage up to 690 V AC. It provides an ultimate short-circuit breaking capacity of 85 kA at 400/415/440 V AC and 66 kA at 500–690 V AC, together with a rated short-time withstand current of 66 kA for 1 s.

Key Advantages

• High-current ABB SACE Emax 2 air circuit breaker for demanding low-voltage distribution systems.
• 4000 A rated uninterrupted current for major incoming and feeder circuits.
• Four-pole configuration with a neutral pole rated at 100% of Iu.
• Reliable Ekip Dip LSI electronic trip unit.
• LSI protection covers overload, selective short-circuit and instantaneous short-circuit conditions.
• 85 kA ultimate short-circuit breaking capacity at 400/415/440 V AC.
• 66 kA rated short-time withstand current for 1 s.
• Withdrawable moving-part design supports convenient inspection, maintenance and replacement.

Key Features

• ABB SACE Emax 2 E4.2S frame.
• 4000 A rated uninterrupted current.
• Four-pole construction.
• Ekip Dip LSI solid-state electronic protection release.
• Long-time overload protection (L).
• Short-time selective short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 85 kA Icu at 400/415/440 V AC.
• 66 kA Icu at 500–690 V AC.
• 66 kA Icw for 1 s and 3 s.
• Four auxiliary contacts with circuit-breaker open/closed indication.
• Withdrawable moving part for compatible Emax 2 switchgear installations.

Selective LSI Protection for High-Current Distribution

The ABB Ekip Dip LSI electronic trip unit provides three essential protection functions for high-current low-voltage networks. Long-time protection safeguards cables, busbars and connected equipment against sustained overloads, short-time protection supports selective coordination during short-circuit events, and instantaneous protection rapidly interrupts severe faults.

The E4.2S frame is engineered for installations where high continuous current, strong fault-interruption capability and system selectivity are required. Its combination of 4000 A current capacity, 85 kA breaking capacity at 400/415/440 V AC, 66 kA short-time withstand capability and withdrawable construction makes it well suited to major industrial and infrastructure switchboards.

Typical Applications

• High-current industrial power distribution switchboards.
• Main incoming circuit-breaker applications.
• High-current outgoing feeder protection.
• Transformer secondary distribution systems.
• Manufacturing and process industry installations.
• Data centres and critical power infrastructure.
• Large commercial and infrastructure projects.
• Low-voltage networks requiring selective short-circuit protection.