1SDA073178R1 ABB E4.2N 4000 Ekip Hi-Touch LSI 4p WMP Air Circuit Breaker

Why Choose the ABB E4.2N 4000 Ekip Hi-Touch LSI 4p WMP Air Circuit Breaker?

The ABB E4.2N 4000 Ekip Hi-Touch LSI 4p WMP, order code 1SDA073178R1, is a high-current four-pole air circuit breaker (ACB) from the ABB SACE Emax 2 range, designed for protection, switching and advanced monitoring in demanding low-voltage power distribution systems. Rated at 4000 A, this withdrawable moving part combines the E4.2N breaker platform with ABB's advanced Ekip Hi-Touch LSI electronic trip unit.

The Ekip Hi-Touch LSI release provides long-time overload (L), short-time selective short-circuit (S) and instantaneous short-circuit (I) protection. The Hi-Touch platform provides an advanced touchscreen interface together with enhanced measurement, monitoring and power-management capabilities, making this configuration suitable for sophisticated industrial and critical power distribution applications.

The E4.2N 4000 has a rated operational voltage of 690 V AC and provides an ultimate short-circuit breaking capacity of 66 kA across its specified 400–690 V AC ratings. Its 66 kA short-time withstand current for 1 s, four-pole construction and withdrawable moving-part design support selective protection and maintainability in high-current switchboards.

Key Advantages

• High-current ABB SACE Emax 2 air circuit breaker for demanding low-voltage power distribution.
• 4000 A rated uninterrupted current for large industrial, commercial and infrastructure systems.
• Four-pole configuration with 100% neutral-pole current capability.
• Ekip Hi-Touch LSI electronic trip unit provides advanced overload and short-circuit protection.
• 66 kA ultimate short-circuit breaking capacity at 400–690 V AC.
• 100% Ics-to-Icu performance across the specified operational voltage range.
• 66 kA short-time withstand current for 1 s supports selective coordination.
• Withdrawable moving-part construction supports efficient inspection, maintenance and replacement.

Key Features

• ABB SACE Emax 2 E4.2N air circuit breaker platform.
• 4000 A rated current.
• Four-pole construction.
• Ekip Hi-Touch LSI electronic release.
• Long-time overload (L), short-time selective short-circuit (S) and instantaneous short-circuit (I) protection.
• 66 kA Icu at 400, 415, 440, 500, 525 and 690 V AC.
• 66 kA Ics across the specified operational voltage range.
• 66 kA Icw for 1 s and 50 kA Icw for 3 s.
• 12 kV rated impulse withstand voltage.
• Suitable for IT networks up to 690 V.
• Four auxiliary change-over contacts.
• Optional motor drive capability.
• Withdrawable moving part for connection through a separate fixed chassis.
• Designed in accordance with IEC 60947-2.

Advanced High-Current Distribution Protection

Air circuit breakers such as the ABB SACE Emax 2 provide switching, isolation and protection for high-current low-voltage electrical networks. The E4.2N platform combines a substantial 4000 A continuous-current rating with 66 kA short-circuit breaking and short-time withstand capability, making it suitable for main switchboards and other high-capacity distribution systems.

The Ekip Hi-Touch LSI trip unit combines adjustable long-time, short-time and instantaneous protection with advanced monitoring and an intuitive touchscreen interface. Short-time protection is particularly valuable where selective coordination between upstream and downstream protective devices is required, helping isolate faults while maintaining supply to unaffected parts of an appropriately engineered electrical network.

Typical Applications

• Main low-voltage distribution switchboards.
• High-current industrial power distribution systems.
• Transformer secondary protection.
• Main and high-current feeder protection.
• Manufacturing plants and process facilities.
• Data centres and critical power infrastructure.
• Large commercial and infrastructure installations.
• High-capacity switchgear and power distribution systems.