1SDA071753R1 ABB E4.2V 2500 Ekip Dip LSIG 4P Air Circuit Breaker

Why Choose the ABB E4.2V 2500 Ekip Dip LSIG 4P Air Circuit Breaker?

The ABB 1SDA071753R1 is a high-performance SACE Emax 2 E4.2V air circuit breaker (ACB) rated at 2500 A, designed for protection and switching in demanding low-voltage power distribution systems. Part of the ABB SACE Emax 2 series, this fixed four-pole circuit breaker combines exceptionally high short-circuit performance with the reliable Ekip Dip LSIG electronic trip unit.

The E4.2V 2500 incorporates the Ekip Dip LSIG electronic release, providing long-time overload, short-time selective, instantaneous short-circuit and earth-fault protection. Its adjustable electronic protection functions support effective coordination between protective devices, helping isolate faults selectively while maintaining continuity of supply elsewhere in the electrical network.

With a rated current of 2500 A, an ultimate short-circuit breaking capacity of 150 kA at 440 V AC and a rated short-time withstand current of 100 kA for 1 s, the E4.2V is engineered for installations with exceptionally high prospective fault currents. This version is a fixed, four-pole breaker with rear horizontal connections, making it suitable for integration into high-performance low-voltage switchboards.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage distribution systems.
• 2500 A rated current for high-current electrical installations.
• Four-pole configuration for comprehensive switching and protection.
• Reliable Ekip Dip LSIG electronic trip unit with adjustable protection settings.
• LSIG functionality provides long-time overload, short-time selective, instantaneous short-circuit and earth-fault protection.
• 150 kA ultimate short-circuit breaking capacity at 440 V AC for very high fault-level networks.
• 100 kA short-time withstand current for 1 s.
• Fixed execution with rear horizontal connections for switchboard integration.

Key Features

• ABB SACE Emax 2 E4.2V frame.
• 2500 A rated current.
• Four-pole construction.
• Fixed circuit-breaker execution.
• Rear horizontal connections.
• Ekip Dip LSIG electronic protection release.
• Long-time overload protection.
• Short-time selective protection.
• Instantaneous short-circuit protection.
• Integrated earth-fault protection.
• High breaking capacity for very high fault-level electrical networks.
• Designed for coordinated protection in complex low-voltage distribution systems.

Comprehensive LSIG Protection for High-Power Distribution

ABB SACE Emax 2 air circuit breakers protect low-voltage distribution networks against overload, short-circuit and earth-fault conditions while providing dependable switching and isolation. The E4.2V performance level combines a 2500 A current rating with very high breaking and short-time withstand capabilities, making it suitable for installations where substantial prospective fault currents must be safely controlled.

The Ekip Dip LSIG release provides long-time overload (L), short-time selective (S), instantaneous short-circuit (I) and earth-fault (G) protection. Adjustable electronic protection parameters support selective coordination between upstream and downstream devices, helping protect equipment while maintaining continuity of service across demanding industrial and infrastructure electrical networks.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Transformer secondary protection.
• Generator and utility distribution systems.
• Very high fault-level electrical networks.
• Critical power and high-current feeder protection.