1SDA072544R1 ABB E4.2N 4000 Ekip Touch LI 3p WMP Air Circuit Breaker 4000 A

Why Choose the ABB E4.2N 4000 Ekip Touch LI 3p WMP Air Circuit Breaker?

The ABB E4.2N 4000 Ekip Touch LI 3p WMP, order code 1SDA072544R1, is a high-capacity three-pole air circuit breaker (ACB) from the ABB SACE Emax 2 range, designed for protection and switching in demanding low-voltage power distribution systems. With a 4000 A rated uninterrupted current and ABB's advanced Ekip Touch LI electronic trip unit, it provides long-time overload and instantaneous short-circuit protection.

The E4.2N combines substantial current-carrying capability with dependable short-circuit performance for industrial, commercial and infrastructure power networks. This N-performance model provides a rated ultimate short-circuit breaking capacity of 66 kA at 440 V AC together with a rated short-time withstand current of 66 kA for 1 s, supporting robust protection in high-current distribution applications.

The 1SDA072544R1 is the moving part of a withdrawable circuit breaker and features a three-pole configuration. Its Ekip Touch LI electronic release provides an adjustable long-time protection range of 0.4–1 × In and instantaneous protection from 1.5–15 × In, while the touchscreen interface provides convenient access to protection settings and breaker information.

Key Advantages

• High-capacity 4000 A air circuit breaker for major low-voltage distribution circuits.
• 66 kA ultimate breaking capacity at 440 V AC for demanding electrical installations.
• Advanced Ekip Touch LI electronic protection with long-time and instantaneous functions.
• Adjustable long-time protection from 0.4–1 × In.
• Adjustable instantaneous protection from 1.5–15 × In.
• Three-pole withdrawable moving-part configuration supports convenient switchgear servicing and maintenance.

Key Features

• ABB SACE Emax 2 E4.2N series.
• 4000 A rated uninterrupted current.
• Three-pole configuration.
• Ekip Touch LI electronic trip unit.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• 66 kA Icu at 440 V AC.
• 66 kA Icw for 1 s.
• Touchscreen interface for protection configuration and breaker information.
• Four auxiliary change-over contacts.
• Circuit-breaker switched-off indication.
• Withdrawable moving-part configuration for compatible SACE Emax 2 switchgear.

Advanced Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 provide switching, isolation and circuit protection for high-current low-voltage electrical networks. The E4.2N frame combines a 4000 A current rating with 66 kA short-circuit breaking capacity at 440 V AC, making it suitable for major incoming and distribution circuits where dependable fault interruption and high continuous-current capability are required.

The Ekip Touch LI electronic trip unit provides adjustable long-time overload and instantaneous short-circuit protection. Its touchscreen interface simplifies interaction with protection settings and breaker information, while the withdrawable construction of the 1SDA072544R1 supports efficient inspection and servicing in critical high-current power distribution installations.

Typical Applications

• Main low-voltage electrical switchboards.
• Industrial power distribution systems.
• Manufacturing and process plant switchgear.
• Commercial and infrastructure power distribution.
• Transformer and installation protection.
• High-current incoming and distribution feeders.
• Large electrical distribution panels.
• Applications requiring adjustable overload and instantaneous protection.
• Withdrawable switchgear assemblies requiring serviceable high-current circuit protection.