1SDA072770R1 ABB E1.2B 1000 Ekip G Hi-Touch LSIG 4P WMP Air Circuit Breaker

Why Choose the ABB E1.2B 1000 Ekip G Hi-Touch LSIG 4p WMP Air Circuit Breaker?

The ABB 1SDA072770R1 is an advanced SACE Emax 2 E1.2B air circuit breaker designed for protection, switching and power management in low-voltage distribution and generator applications. Rated at 1000 A, this four-pole withdrawable breaker combines ABB's compact E1.2 frame with the sophisticated Ekip G Hi-Touch LSIG electronic trip unit, providing Long-time, Short-time, Instantaneous and Ground-fault protection.

The E1.2B performance level provides a rated ultimate short-circuit breaking capacity of 42 kA at 400–440 V AC, together with a rated short-time withstand current of 42 kA for 1 s. With operation in low-voltage systems up to 690 V AC, the breaker is suited to industrial, commercial, infrastructure and critical-power networks requiring dependable fault protection and selective coordination.

This model is supplied as a four-pole withdrawable moving part (WMP) for use with the appropriate Emax 2 fixed part. Its Ekip G Hi-Touch release adds advanced generator-oriented protection, measurement and monitoring capabilities to the LSIG overcurrent functions, making the breaker particularly suitable for generator protection, power plants, standby generation and sophisticated power-management systems.

Key Advantages

• High-performance 1000 A air circuit breaker for low-voltage distribution and generator applications.
• Four-pole configuration supports switching and protection of four-conductor systems.
• Ekip G Hi-Touch LSIG electronic trip unit combines comprehensive circuit protection with generator-oriented functionality.
• 42 kA ultimate short-circuit breaking capacity at 400–440 V AC.
• 42 kA short-time withstand current for 1 s supports selective protection schemes.
• Integrated Ground-fault (G) protection provides protection against earth-fault conditions.
• Advanced measurement, monitoring and generator protection functions support sophisticated power-management applications.
• Withdrawable construction supports efficient inspection, maintenance and breaker replacement.
• Part of ABB's modular SACE Emax 2 circuit-breaker and power-management platform.

Key Features

• ABB SACE Emax 2 E1.2B air circuit breaker.
• 1000 A rated uninterrupted current.
• 4-pole configuration.
• Ekip G Hi-Touch LSIG advanced electronic protection release.
• Long-time (L) overload protection.
• Short-time (S) selective short-circuit protection.
• Instantaneous (I) short-circuit protection.
• Ground-fault (G) protection.
• Advanced generator-oriented protection and monitoring functionality.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 42 kA Icu at 400–440 V AC.
• 42 kA Icw for 1 s.
• Advanced measurement and power-management capabilities.
• Withdrawable moving-part configuration for maintainable switchboard installations.

Advanced Generator and Power-System Protection

The ABB SACE Emax 2 E1.2B 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 functions intended for generator and power-management applications, supporting comprehensive supervision of critical electrical systems.

With a 1000 A current rating, 42 kA ultimate short-circuit breaking capacity and 42 kA short-time withstand capability for 1 s, the E1.2B supports reliable protection and selective coordination. Its withdrawable construction allows the moving breaker portion to be separated from the corresponding fixed part, simplifying inspection and maintenance 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.
• Emergency and standby generation systems.
• Manufacturing and process-control facilities.
• Data centres and critical-power installations.
• Infrastructure and utility power systems.
• Power-management installations requiring advanced LSIG and generator-oriented protection.