1SDA072570R1 ABB E4.2H 4000 Ekip G Hi-Touch LSIG 3-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072570R1 E4.2H 4000 Ekip G Hi-Touch LSIG Air Circuit Breaker?

The ABB 1SDA072570R1 is a high-performance SACE Emax 2 E4.2H 4000 air circuit breaker moving part designed for demanding low-voltage power distribution and generator applications. This three-pole configuration combines a 4000 A rated uninterrupted current with an advanced Ekip G Hi-Touch LSIG solid-state electronic trip unit, providing comprehensive overload, short-circuit and ground-fault protection.

As part of the ABB SACE Emax 2 range, the E4.2H combines high-current switching capability with sophisticated electronic protection. The Ekip G Hi-Touch LSIG release provides long-time, short-time, instantaneous and ground-fault protection together with generator-oriented protection functionality, making this configuration suitable for complex power generation and distribution systems.

This model is a 3-pole withdrawable moving part (WMP) rated at 4000 A. The E4.2H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 415 V AC and 85 kA at 690 V AC, supporting demanding switchboards with high prospective fault currents.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding power distribution and generator applications.
• 4000 A rated uninterrupted current for high-current industrial and infrastructure systems.
• Ekip G Hi-Touch LSIG electronic trip unit with advanced generator-oriented protection functionality.
• LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
• High short-circuit performance with 100 kA Icu at 415 V AC.
• Maintains 85 kA Icu at 690 V AC for demanding higher-voltage low-voltage distribution systems.
• 3-pole withdrawable moving-part design supports efficient switchboard inspection, servicing and maintenance.

Key Features

• ABB SACE Emax 2 E4.2H frame.
• 4000 A rated uninterrupted current.
• 3-pole configuration.
• Ekip G Hi-Touch LSIG solid-state electronic release.
• Long-time L overload protection.
• Short-time S short-circuit protection.
• Instantaneous I short-circuit protection.
• Ground-fault G protection.
• Generator-oriented Ekip G protection functionality.
• 100 kA Icu at 415 V AC.
• 85 kA Icu at 690 V AC.
• 4 auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Withdrawable moving part (WMP) configuration.

Advanced Generator and LSIG Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 E4.2H provide switching and protection for high-current low-voltage distribution circuits. The electronic trip unit monitors electrical conditions and initiates circuit interruption when configured protection thresholds are exceeded, helping protect switchgear, conductors, generators and connected equipment against overload, short-circuit and ground-fault currents.

The Ekip G Hi-Touch LSIG release combines comprehensive LSIG protection with generator-oriented functionality for demanding electrical systems. Together with the E4.2H frame's high breaking performance and withdrawable architecture, the 1SDA072570R1 provides a robust solution where high fault-current capability, sophisticated electronic protection and maintainability are required.

Typical Applications

• Generator protection and power generation systems.
• Main incoming protection in high-current low-voltage switchboards.
• Industrial power distribution systems.
• Transformer protection and secondary distribution.
• High-current and high-fault-level feeder protection.
• Commercial and infrastructure electrical distribution.
• Critical power systems and large electrical installations.