1SDA073203R1 ABB E4.2V 4000 Ekip Dip LSIG 4p WMP Air Circuit Breaker

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

The ABB E4.2V 4000 Ekip Dip LSIG 4p WMP, order code 1SDA073203R1, is a high-performance four-pole air circuit breaker (ACB) from the ABB SACE Emax 2 range, designed for protection and switching in demanding high-current low-voltage power distribution systems. Rated at 4000 A, this withdrawable moving part combines the E4.2 frame with ABB's high-breaking-capacity V performance level and an Ekip Dip LSIG electronic trip unit.

The Ekip Dip LSIG release provides long-time overload (L), short-time selective short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. Its adjustable electronic protection functions allow the breaker to be coordinated with transformers, feeders, busbars and downstream protective devices while providing integrated protection against earth faults.

The E4.2V 4000 has a rated voltage of 690 V and provides an ultimate short-circuit breaking capacity of 150 kA at 400–440 V AC, together with a rated short-time withstand current of 100 kA for 1 s. Its four-pole withdrawable moving-part construction connects through a separate fixed chassis, supporting efficient inspection, servicing and replacement in high-capacity switchboards.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage distribution systems.
• 4000 A rated uninterrupted current for high-current industrial and infrastructure applications.
• Four-pole configuration for comprehensive switching and protection.
• Ekip Dip LSIG electronic trip unit provides overload, selective short-circuit, instantaneous short-circuit and earth-fault protection.
• 150 kA ultimate short-circuit breaking capacity at 400–440 V AC.
• 100 kA ultimate short-circuit breaking capacity at 500–690 V AC.
• 100 kA short-time withstand current for 1 s supports selective protection strategies.
• Withdrawable moving-part construction supports efficient switchboard inspection, maintenance and replacement.

Key Features

• ABB SACE Emax 2 E4.2V air circuit breaker platform.
• 4000 A rated uninterrupted current.
• Four-pole construction.
• Ekip Dip LSIG electronic release.
• Long-time overload (L), short-time selective short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection.
• 1600–4000 A overload protection adjustment range.
• 2400–40000 A delayed short-circuit protection adjustment range.
• 6000–60000 A instantaneous short-circuit protection adjustment range.
• 150 kA Icu at 440 V AC.
• 100 kA Icw for 1 s.
• Integrated earth-fault protection.
• Four auxiliary change-over contacts.
• Trip indication provided.
• Optional motor operation.
• Withdrawable moving part for connection through a separate fixed chassis.

Comprehensive LSIG Protection for High-Fault-Level Distribution

Air circuit breakers such as the ABB SACE Emax 2 provide switching, isolation and protection for high-current low-voltage electrical networks. The E4.2V platform combines a substantial 4000 A continuous-current rating with 150 kA short-circuit breaking capability at 400–440 V AC, making it particularly suitable for installations where very high prospective fault currents must be safely interrupted.

The Ekip Dip LSIG trip unit provides a comprehensive protection architecture covering overloads, delayed and instantaneous short circuits, and earth faults. Combined with the breaker's 100 kA 1-second short-time withstand capability, these adjustable functions support selective coordination between upstream and downstream protective devices in appropriately engineered high-current distribution systems.

Typical Applications

• Main low-voltage distribution switchboards.
• High-fault-level industrial electrical networks.
• 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.