1SDA073177R1 ABB E4.2N 4000 Ekip G Touch LSIG 4p WMP Air Circuit Breaker

Why Choose the ABB E4.2N 4000 Ekip G Touch LSIG 4p WMP Air Circuit Breaker?

The ABB E4.2N 4000 Ekip G Touch LSIG 4p WMP, order code 1SDA073177R1, is a high-current four-pole air circuit breaker (ACB) from the ABB SACE Emax 2 range, designed for generator protection and demanding low-voltage power distribution systems. Rated at 4000 A, this withdrawable moving part combines the E4.2N breaker platform with an advanced Ekip G Touch LSIG electronic trip unit.

The Ekip G Touch LSIG release provides long-time overload (L), short-time selective short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. The generator-oriented Ekip G Touch platform adds dedicated protection and monitoring capabilities for generating sets and power-generation systems, while its touchscreen interface provides convenient access to protection settings, measurements and operating information.

The E4.2N 4000 provides an ultimate short-circuit breaking capacity of 66 kA at 440 V AC and a rated short-time withstand current of 66 kA for 1 s. Its 4000 A rating, four-pole configuration and withdrawable moving-part construction make it particularly suitable for generator switchboards, main distribution boards and other critical high-current installations where protection, selectivity and maintainability are essential.

Key Advantages

• High-current ABB SACE Emax 2 air circuit breaker for generator and low-voltage power distribution applications.
• 4000 A rated uninterrupted current for demanding industrial and infrastructure systems.
• Four-pole configuration for switching and protection of three-phase systems with neutral.
• Ekip G Touch LSIG electronic trip unit provides comprehensive overload, short-circuit and earth-fault protection.
• Generator-oriented protection functionality supports generating sets and generator switchboards.
• 66 kA ultimate short-circuit breaking capacity at 440 V AC.
• 66 kA short-time withstand current for 1 s supports selective protection strategies.
• Withdrawable moving-part construction facilitates inspection, maintenance and replacement within the switchboard.

Key Features

• ABB SACE Emax 2 E4.2N air circuit breaker platform.
• 4000 A rated uninterrupted current.
• Four-pole construction.
• Ekip G Touch LSIG electronic release.
• Long-time overload (L) protection.
• Short-time selective short-circuit (S) protection.
• Instantaneous short-circuit (I) protection.
• Earth-fault (G) protection.
• 66 kA Icu at 440 V AC.
• 66 kA Icw for 1 s.
• Touchscreen interface for protection configuration and operating information.
• Dedicated generator-oriented protection functionality.
• Withdrawable moving part for installation with the corresponding fixed chassis.
• Designed for high-current low-voltage distribution and generation systems.

Advanced Generator and 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 4000 A current rating with substantial short-circuit withstand capability, making it suitable for main switchboards and generator installations where dependable protection and continuity of supply are important.

The Ekip G Touch LSIG trip unit combines long-time, short-time, instantaneous and earth-fault protection with generator-oriented functionality. This comprehensive protection architecture allows the circuit breaker to protect generating sets, transformers, busbars and high-current feeders while supporting selective coordination within appropriately engineered power distribution systems.

Typical Applications

• Generator protection and generator switchboards.
• Main low-voltage distribution switchboards.
• High-current industrial power distribution systems.
• Standby and prime-power generation installations.
• Transformer secondary and main feeder protection.
• Manufacturing plants and process facilities.
• Critical power and infrastructure installations.
• Large commercial and industrial switchgear systems.