1SDA072788R1 ABB E1.2N 1000 Ekip Hi-Touch LSI 4P Air Circuit Breaker

Why Choose the ABB 1SDA072788R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072788R1 is a high-performance SACE Emax 2 E1.2N air circuit breaker designed for advanced protection, measurement and control of low-voltage electrical distribution systems. Configured as an E1.2N 1000 Ekip Hi-Touch LSI 4p WMP, this four-pole withdrawable moving part combines a 1000 A rated uninterrupted current with ABB's advanced Ekip Hi-Touch LSI solid-state electronic protection release.

As part of the ABB SACE Emax 2 air circuit breaker series, the E1.2N is engineered for demanding industrial, commercial and infrastructure power distribution applications. The Ekip Hi-Touch LSI trip unit provides adjustable long-time, short-time and instantaneous overcurrent protection, complemented by integrated Ekip Measuring Pro and Network Analyzer functionality for advanced electrical measurement and power-quality monitoring.

The E1.2N performance level provides a rated ultimate short-circuit breaking capacity of 66 kA at 380–440 V AC and 50 kA at 500–690 V AC. With a rated operational voltage of 690 V AC, rated insulation voltage of 1000 V AC and four-pole withdrawable construction, the breaker is well suited to critical switchboards requiring high fault interruption performance, sophisticated protection and convenient maintenance.

Key Advantages

• Advanced ABB SACE Emax 2 air circuit breaker for demanding low-voltage power distribution.
• 1000 A rated uninterrupted current for substantial industrial and commercial electrical loads.
• 66 kA ultimate short-circuit breaking capacity at 380–440 V AC.
• 50 kA ultimate short-circuit breaking capacity at 500–690 V AC.
• Advanced Ekip Hi-Touch LSI electronic protection release.
• Integrated long-time, short-time and instantaneous protection functions.
• Integrated Ekip Measuring Pro and Network Analyzer functionality.
• Four-pole withdrawable moving-part construction supports convenient isolation, inspection and maintenance.

Key Features

• ABB SACE Emax 2 E1.2N series.
• 1000 A rated uninterrupted current.
• 4-pole configuration.
• Ekip Hi-Touch LSI solid-state electronic trip unit.
• 66 kA Icu at 380–440 V AC.
• 50 kA Icu at 500–690 V AC.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 50 / 60 Hz operating frequency.
• Adjustable long-time overload protection.
• Adjustable short-time selective short-circuit protection.
• Adjustable instantaneous short-circuit protection.
• Integrated Ekip Measuring Pro measurement functionality.
• Integrated Network Analyzer for electrical network and power-quality monitoring.
• Touch-sensitive display for protection configuration and monitoring.
• Four change-over auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Optional motor operating mechanism.
• Withdrawable moving-part design for use with the corresponding Emax 2 fixed part.

Advanced Circuit Protection and Power Monitoring

Air circuit breakers such as the ABB SACE Emax 2 E1.2N protect low-voltage electrical distribution systems against overloads and short circuits while providing dependable switching and isolation. With a 66 kA breaking capacity at 380–440 V AC, this E1.2N configuration offers enhanced fault interruption performance for demanding switchboards, feeders and critical electrical distribution systems.

The Ekip Hi-Touch LSI electronic trip unit extends conventional overcurrent protection with advanced electrical measurement and analysis. Integrated Ekip Measuring Pro and Network Analyzer functionality supports detailed supervision of electrical parameters and power quality, while adjustable long-time, short-time and instantaneous protection enables effective coordination and selectivity within modern low-voltage distribution networks.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Manufacturing and process facilities.
• Data centres and critical infrastructure.
• Incoming and outgoing high-current switchboard feeders.
• Power monitoring and electrical network analysis systems.
• Distribution systems requiring selective LSI overcurrent protection.
• Switchboards requiring four-pole withdrawable circuit breaker assemblies.