1SDA072938R1 ABB E2.2N 1250 Ekip Hi-Touch LSI 4p WMP Air Circuit Breaker 1250 A

Why Choose the ABB E2.2N 1250 Ekip Hi-Touch LSI 4p WMP Air Circuit Breaker?

The ABB E2.2N 1250 Ekip Hi-Touch LSI 4p WMP, order code 1SDA072938R1, is a high-performance four-pole air circuit breaker (ACB) moving part designed for advanced protection, switching and isolation in low-voltage electrical distribution systems. As part of the ABB SACE Emax 2 series, it combines a 1250 A rated uninterrupted current with sophisticated electronic protection and measurement capabilities for demanding industrial, commercial and infrastructure power distribution applications.

This Emax 2 circuit breaker is equipped with the Ekip Hi-Touch LSI electronic trip unit, providing long-time, short-time and instantaneous overcurrent protection. The advanced Hi-Touch platform offers touchscreen-based configuration and enhanced protection, measurement and power-management capabilities, making it particularly suitable for electrical systems where accurate monitoring, selective coordination and flexible system integration are required.

The E2.2N 1250 provides a rated ultimate short-circuit breaking capacity of 66 kA at 400–690 V AC, with a rated short-time withstand current of 66 kA for 1 s. Its four-pole withdrawable moving-part (WMP) construction is designed for use with the corresponding Emax 2 fixed part, facilitating isolation, inspection, servicing and replacement in critical power distribution systems.

Key Advantages

• Advanced ABB SACE Emax 2 air circuit breaker for low-voltage power distribution.
• 1250 A rated uninterrupted current for high-current electrical installations.
• Four-pole configuration with 100% neutral-pole current capability.
• Ekip Hi-Touch LSI electronic trip unit provides advanced long-time, short-time and instantaneous protection.
• 66 kA ultimate short-circuit breaking capacity at 400–690 V AC.
• 66 kA short-time withstand current for 1 s and 50 kA for 3 s.
• Advanced measurement and monitoring capabilities support intelligent power management.
• Withdrawable construction supports efficient isolation, inspection and maintenance.

Key Features

• ABB SACE Emax 2 E2.2N series.
• 1250 A rated uninterrupted current.
• Four-pole air circuit breaker moving part.
• Ekip Hi-Touch LSI electronic protection trip unit.
• Long-time, short-time and instantaneous overcurrent protection functions.
• 66 kA Icu at 400–690 V AC.
• 100% Ics/Icu service short-circuit breaking performance.
• 66 kA Icw for 1 s and 50 kA Icw for 3 s.
• Rated operational voltage up to 690 V AC.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 100% neutral-pole current capability.
• Four auxiliary changeover contacts and switched-off indication.
• Withdrawable moving-part construction for maintainable power distribution assemblies.

Advanced Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB Emax 2 E2.2N provide switching, isolation and overcurrent protection for high-current low-voltage distribution circuits. The E2.2N performance level combines a 66 kA short-circuit breaking capacity with substantial short-time withstand capability, helping protect switchboards, conductors and downstream electrical equipment during overload and fault conditions.

The Ekip Hi-Touch LSI trip unit provides advanced long-time protection against sustained overloads, short-time protection for selective fault coordination and instantaneous protection against severe short circuits. Combined with the withdrawable Emax 2 architecture and advanced monitoring capabilities, these functions make the breaker particularly suitable for installations where protection selectivity, electrical performance, system availability and maintainability are important.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial electrical distribution systems.
• Commercial and infrastructure power distribution.
• Main incoming and high-current feeder protection.
• Motor control centres and industrial switchgear assemblies.
• Distribution systems requiring advanced protection and monitoring.
• Installations requiring selective short-circuit protection.
• Withdrawable switchgear systems requiring convenient maintenance and isolation.