1SDA072750R1 ABB E1.2N 800 Ekip G Hi-Touch LSIG 4P WMP Air Circuit Breaker

Why Choose the ABB E1.2N 800 Ekip G Hi-Touch LSIG 4p WMP Air Circuit Breaker?

The ABB 1SDA072750R1 is a high-performance SACE Emax 2 E1.2N air circuit breaker designed for advanced protection, switching and power management in low-voltage electrical distribution and generator applications. Rated at 800 A, this four-pole withdrawable breaker combines ABB's compact E1.2N frame with the sophisticated Ekip G Hi-Touch LSIG electronic trip unit, providing comprehensive protection against overload, short-circuit and earth-fault conditions.

The E1.2N performance level provides a rated ultimate short-circuit breaking capacity of 66 kA at 400–440 V AC and 50 kA at 500–690 V AC. Its rated operational voltage of 690 V AC, 1000 V AC insulation voltage and 12 kV impulse withstand voltage support use in demanding industrial, commercial, infrastructure and critical-power distribution systems.

This model is supplied as a four-pole withdrawable moving part (WMP) and is fitted with four auxiliary contacts plus circuit-breaker open/closed position indication. The Ekip G Hi-Touch LSIG release combines Long-time, Short-time, Instantaneous and Ground-fault protection with advanced generator-oriented protection, measurement and power-management capabilities, making the breaker particularly suitable for sophisticated generation and distribution installations.

Key Advantages

• High-performance 800 A air circuit breaker for demanding low-voltage power systems.
• Four-pole configuration supports switching and protection of four-conductor circuits.
• Ekip G Hi-Touch LSIG electronic trip unit combines advanced generator-oriented functionality with comprehensive circuit protection.
• 66 kA ultimate breaking capacity at 400–440 V AC for systems with substantial prospective fault currents.
• 50 kA ultimate breaking capacity at 500–690 V AC maintains strong protection at higher system voltages.
• Ics equal to 100% of Icu supports dependable service short-circuit performance.
• Long-time, Short-time, Instantaneous and Ground-fault protection cover key overcurrent and earth-fault conditions.
• Advanced measurement and power-management functionality supports sophisticated electrical-system supervision.
• Withdrawable construction supports efficient switchboard inspection, servicing and replacement.

Key Features

• ABB SACE Emax 2 E1.2N air circuit breaker.
• 800 A rated current.
• 4-pole configuration.
• Ekip G Hi-Touch LSIG solid-state electronic release.
• Long-time (L) overload protection.
• Short-time (S) selective short-circuit protection.
• Instantaneous (I) short-circuit protection.
• Ground-fault (G) protection.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 66 kA Icu at 400–440 V AC.
• 50 kA Icu at 500–690 V AC.
• 100% rated service short-circuit breaking capacity relative to Icu.
• 50 kA short-time withstand current for 1 s.
• 30 kA short-time withstand current for 3 s.
• Four auxiliary contacts and open/closed breaker position indication.
• Withdrawable moving-part configuration for switchboard applications.

Advanced Generator and Power-System Protection

The ABB SACE Emax 2 E1.2N provides a robust switching and protection point within low-voltage distribution and generation systems. Its Ekip G Hi-Touch LSIG release combines Long-time overload, Short-time selective, Instantaneous short-circuit and Ground-fault protection with advanced functionality intended for demanding generator and power-management applications.

With an 800 A current rating, up to 66 kA ultimate short-circuit breaking capacity and 50 kA short-time withstand capability for 1 s, the E1.2N offers strong fault-current performance in a compact Emax 2 frame. Its withdrawable construction enables the moving breaker portion to be removed from the corresponding fixed part, supporting maintenance and replacement where system availability and service continuity are important.

Typical Applications

• Generator protection and generator distribution systems.
• Main and distribution switchboards.
• Industrial low-voltage power distribution systems.
• Commercial and infrastructure electrical distribution.
• Manufacturing and process-control facilities.
• Data centres and critical-power installations.
• Emergency and standby generation systems.
• Power-management installations requiring advanced LSIG and generator-oriented protection.