1SDA072499R1 ABB E4.2N 3200 Ekip Hi-Touch LSIG 3-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072499R1 E4.2N 3200 Ekip Hi-Touch LSIG Air Circuit Breaker?

The ABB 1SDA072499R1 is a high-performance SACE Emax 2 E4.2N 3200 air circuit breaker moving part designed for protection and switching in demanding low-voltage electrical distribution systems. This three-pole configuration combines a 3200 A rated uninterrupted current with an advanced Ekip 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 E4.2N combines high-current switching capability with advanced electronic protection, measurement and monitoring functionality. The Ekip Hi-Touch LSIG release provides long-time, short-time, instantaneous and ground-fault protection functions, making the breaker suitable for sophisticated transformer, generator and installation protection applications.

This model is a 3-pole withdrawable moving part (WMP) rated at 3200 A and 690 V AC. The E4.2N performance level provides a rated ultimate short-circuit breaking capacity of 66 kA and a rated short-time withstand current of 66 kA for 1 s, supporting reliable protection and selective coordination in high-current switchboards.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage power distribution.
• 3200 A rated uninterrupted current for high-current industrial and infrastructure applications.
• Ekip Hi-Touch LSIG electronic trip unit with advanced protection, measurement and monitoring functionality.
• LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
• 66 kA rated ultimate short-circuit breaking capacity across key low-voltage operating levels up to 690 V AC.
• 66 kA rated short-time withstand current for 1 s supports demanding protection and selectivity requirements.
• 3-pole withdrawable moving-part design facilitates switchboard inspection, servicing and maintenance.

Key Features

• ABB SACE Emax 2 E4.2N frame.
• 3200 A rated uninterrupted current.
• 3-pole configuration.
• Ekip 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.
• 690 V AC rated operational voltage.
• 66 kA rated ultimate short-circuit breaking capacity.
• 66 kA rated short-time withstand current for 1 s.
• Withdrawable moving part (WMP) configuration.
• Fitted with 4 auxiliary contacts and circuit-breaker open/closed position indication.

Advanced LSIG Protection for High-Current Power Distribution

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

The Ekip Hi-Touch LSIG release combines long-time overload protection with short-time, instantaneous and ground-fault protection alongside advanced measurement and monitoring capabilities. Together with the E4.2N frame and withdrawable architecture, the 1SDA072499R1 provides a flexible solution for installations where comprehensive electronic protection, selective coordination and maintainability are important.

Typical Applications

• Main incoming protection in high-current low-voltage switchboards.
• Industrial power distribution systems.
• Transformer protection and secondary distribution.
• Generator protection and power distribution.
• High-current feeder protection.
• Commercial and infrastructure electrical distribution.
• Power distribution centres and critical electrical installations.