1SDA072502R1 ABB E4.2S 3200 Ekip Dip LSI 3P WMP Air Circuit Breaker

Why Choose the ABB 1SDA072502R1 E4.2S 3200 Ekip Dip LSI Air Circuit Breaker?

The ABB 1SDA072502R1 is a high-performance SACE Emax 2 E4.2S 3200 air circuit breaker moving part designed for protection and control of high-current low-voltage AC power distribution systems. Configured as an E4.2S 3200 Ekip Dip LSI 3p WMP, it combines a 3200 A rated current, three-pole construction and ABB's Ekip Dip solid-state electronic release with LSI protection.

As part of the advanced ABB SACE Emax 2 air circuit breaker series, the E4.2S platform is designed for industrial, commercial and infrastructure power-distribution systems requiring dependable switching, high short-circuit performance and selective protection. The S performance level provides a rated ultimate short-circuit breaking capacity of 85 kA at 400–440 V AC and 66 kA at 500–690 V AC.

The Ekip Dip LSI electronic release provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. Its three-pole withdrawable moving-part (WMP) configuration connects to a separate compatible Emax 2 fixed part, helping simplify isolation, inspection and maintenance in critical switchboard installations.

Key Advantages

• High-current ABB SACE Emax 2 E4.2S air circuit breaker moving part.
• 3200 A rated uninterrupted current for demanding low-voltage distribution systems.
• Ekip Dip LSI electronic release provides overload and two-stage short-circuit protection.
• 85 kA ultimate breaking capacity at 400–440 V AC.
• 66 kA ultimate breaking capacity at 500–690 V AC.
• Short-time protection supports selective coordination between upstream and downstream protective devices.
• Three-pole withdrawable construction supports efficient servicing and switchboard maintenance.
• Four auxiliary changeover contacts provide useful breaker-status signalling for control systems.

Key Features

• ABB SACE Emax 2 E4.2 frame.
• S short-circuit performance level.
• 3200 A rated current.
• Three-pole construction.
• Ekip Dip LSI solid-state electronic release.
• Long-time (L) overload protection.
• Short-time (S) delayed short-circuit protection.
• Instantaneous (I) short-circuit protection.
• 690 V AC rated operational voltage.
• 12 kV rated impulse withstand voltage.
• IP30 degree of protection.
• Withdrawable moving-part (WMP) execution.
• Four auxiliary changeover contacts and switched-off indication.
• Optional motor drive for electrically operated applications.

Reliable Selective Protection for High-Current Distribution

Air circuit breakers such as the ABB Emax 2 E4.2S protect high-current low-voltage networks by interrupting potentially damaging overload and short-circuit currents. With a 3200 A current rating and high short-circuit breaking capability, this E4.2S configuration is suited to main distribution positions and other critical points in industrial and commercial electrical networks.

The Ekip Dip LSI release adds short-time protection between the long-time overload and instantaneous short-circuit functions. This allows greater flexibility when coordinating multiple protective devices, helping downstream breakers clear localised faults before an upstream main breaker operates while still providing rapid protection against severe short circuits.

Typical Applications

• Main incoming protection in low-voltage switchboards.
• Industrial high-current power distribution systems.
• Large commercial building electrical distribution.
• Transformer secondary and feeder protection.
• Generator and standby-power distribution systems.
• Manufacturing and process-industry switchgear.
• Infrastructure and utility electrical installations.
• Withdrawable switchboards requiring high-current selective LSI protection.