1SDA073187R1 ABB E4.2S 4000 Ekip G Touch LSIG 4P Air Circuit Breaker

Why Choose the ABB 1SDA073187R1 E4.2S 4000 Ekip G Touch LSIG Air Circuit Breaker?

The ABB 1SDA073187R1 is a high-current SACE Emax 2 E4.2S air circuit breaker moving part engineered for generator protection and demanding low-voltage power-distribution systems. This four-pole withdrawable unit is rated at 4000 A and incorporates an Ekip G Touch LSIG solid-state electronic trip unit, providing long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection.

The Ekip G Touch release combines comprehensive LSIG protection with functions specifically intended for generator applications. Integrated Ekip Measuring Pro measurement functionality and a touch-sensitive LED display provide advanced electrical supervision and intuitive configuration, making this breaker particularly suitable for generator switchboards and critical distribution systems.

With a rated operational voltage of 690 V AC, the E4.2S 4000 provides an ultimate short-circuit breaking capacity of 85 kA at 380–440 V AC and 66 kA at 500–690 V AC. Its 66 kA short-time withstand current for 1 s, four-pole configuration and withdrawable construction support selective, maintainable protection in high-current installations.

Key Advantages

• High-capacity 4000 A SACE Emax 2 air circuit breaker for generator and major low-voltage distribution systems.
• Ekip G Touch LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection.
• Generator-specific protection functionality for demanding power-generation applications.
• 85 kA ultimate short-circuit breaking capacity at 380–440 V AC.
• 66 kA short-time withstand current for 1 s supports selective protection schemes.
• Integrated Ekip Measuring Pro functionality supports advanced electrical measurement.
• Withdrawable moving-part construction facilitates inspection, maintenance and replacement in compatible Emax 2 switchgear.

Key Features

• ABB SACE Emax 2 E4.2S air circuit breaker moving part.
• 4000 A rated current.
• Four-pole (4P) configuration.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 50/60 Hz operating frequency.
• Ekip G Touch LSIG solid-state electronic release.
• Long-time overload protection adjustable from 0.4–1 × In.
• Short-time selective short-circuit protection adjustable from 0.6–10 × In.
• Instantaneous short-circuit protection adjustable from 1.5–15 × In.
• Ground-fault protection adjustable from 0.1–1 × In.
• Ekip Measuring Pro integrated measurement module.
• Touch-sensitive LED display for configuration.
• Four change-over auxiliary contacts and circuit-breaker open/closed indication.
• IP30 degree of protection.

Advanced Generator and LSIG Protection for 4000 A Distribution

The ABB SACE Emax 2 E4.2S combines high-current switching with comprehensive electronic protection for generator and critical low-voltage distribution systems. Its Ekip G Touch LSIG release provides adjustable long-time, short-time, instantaneous and ground-fault protection together with generator-specific functions and integrated Ekip Measuring Pro measurement capabilities.

The E4.2S platform combines a 4000 A current rating with an ultimate breaking capacity of 85 kA at 380–440 V AC and a short-time withstand capability of 66 kA for 1 s. The withdrawable architecture allows the moving part to be separated from its corresponding fixed chassis for inspection, servicing or replacement, supporting maintainability in critical switchboard installations.

Typical Applications

• Generator protection and power-generation switchboards.
• Main incoming protection for high-capacity low-voltage switchboards.
• Industrial power-distribution systems.
• Commercial and infrastructure electrical distribution.
• Transformer secondary protection.
• High-current feeders requiring selective LSIG protection and advanced electrical measurement.