Why Choose the ABB 1SDA128890R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA128890R1 is a high-performance air circuit breaker (ACB) designed for advanced protection, switching and intelligent power management in low-voltage electrical distribution systems. As part of the innovative ABB SACE Emax 3 series, it combines reliable circuit interruption with intelligent monitoring, enhanced diagnostics and scalable connectivity for modern industrial and infrastructure power networks.
The Emax 3 platform represents ABB’s next generation of open circuit breakers, providing advanced protection, power quality measurement, asset management features and secure communication capabilities to support future-ready electrical installations.
With an E2.3S frame size, 2500 A rated current, Ekip Aware LSIG electronic trip unit and four-pole fixed configuration with horizontal rear terminals, the ABB 1SDA128890R1 is designed for demanding low-voltage switchgear, main distribution boards and critical power applications.
Key Advantages
- Advanced ABB SACE Emax 3 air circuit breaker technology for modern electrical distribution systems.
- 2500 A rated current suitable for high-capacity industrial power installations.
- Ekip Aware LSIG protection for comprehensive overload, short-circuit and earth fault protection.
- Four-pole fixed design for applications requiring neutral conductor switching.
- Intelligent monitoring and communication functions for energy management systems.
- Reliable protection and switching performance for critical electrical infrastructure.
Key Features
- ABB SACE Emax 3 series air circuit breaker.
- E2.3S 2500 frame configuration.
- Ekip Aware LSIG electronic trip unit.
- 2500 A rated uninterrupted current.
- Four-pole fixed execution.
- Horizontal rear terminal connection.
- Long-time, short-time, instantaneous and ground fault protection functions.
- Supports advanced digital communication and power management solutions.
Reliable Protection for Industrial Power Distribution
Air circuit breakers protect essential electrical systems by monitoring operating conditions and safely disconnecting circuits during overloads or fault conditions. The ABB Emax 3 range combines advanced protection with intelligent measurement, diagnostics and communication capabilities to improve reliability and operational visibility.
Designed for industrial automation, energy management and smart distribution applications, Emax 3 circuit breakers provide adaptable solutions that support increased system efficiency, cybersecurity and long-term operational continuity.
Typical Applications
- Industrial power distribution systems.
- Main low-voltage switchboards.
- Manufacturing plants and processing facilities.
- Commercial and infrastructure power networks.
- Energy management and monitoring installations.
- Critical power and industrial automation systems.
