Why Choose the ABB 1SDA128843R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA128843R1 is a high-performance SACE Emax 3 air circuit breaker designed for reliable protection, control and monitoring of low-voltage electrical distribution systems. As part of the advanced ABB Emax 3 circuit breaker series, it provides intelligent protection technology for industrial plants, infrastructure projects and critical power installations.
This breaker incorporates an advanced Ekip Aware LSIG electronic trip unit, delivering comprehensive protection functions including long-time, short-time, instantaneous and earth fault protection. Its fixed three-pole design with rear horizontal connections provides a robust solution for high-capacity switchboards and demanding electrical distribution applications.
With a rated current of 4000 A, the ABB 1SDA128843R1 is engineered for large-scale electrical systems requiring dependable circuit interruption, advanced diagnostics and intelligent monitoring. The Emax 3 platform combines digital protection technology with flexible communication capabilities to support modern energy management requirements.
Key Advantages
- Advanced ABB SACE Emax 3 air circuit breaker for high-capacity power distribution.
- 4000 A rated current suitable for demanding electrical installations.
- Integrated Ekip Aware LSIG protection for complete circuit protection.
- Fixed three-pole construction for reliable switchboard installation.
- Intelligent monitoring and diagnostic capabilities.
- Designed for industrial, commercial and infrastructure power systems.
Key Features
- ABB SACE Emax 3 air circuit breaker series.
- E4.3N frame size configuration.
- 4000 A rated current.
- Ekip Aware LSIG electronic release.
- Three-pole fixed version.
- Rear horizontal connection configuration.
- Long-time, short-time, instantaneous and earth fault protection functions.
- Compatible with modern digital energy management systems.
Advanced Protection for Industrial Power Systems
Air circuit breakers such as the ABB Emax 3 range continuously monitor electrical conditions and interrupt fault currents when abnormal situations occur. This helps protect valuable equipment, improve system availability and support safe operation of electrical networks.
The Emax 3 series combines ABB’s established circuit breaker technology with intelligent Ekip Aware protection units, providing enhanced diagnostics, flexible configuration and seamless integration into modern industrial power systems.
Typical Applications
- Industrial power distribution systems.
- Large electrical switchboards and main distribution panels.
- Transformer and generator protection.
- Commercial infrastructure electrical systems.
- Energy management and monitoring installations.
- Critical power protection applications.
