Why Choose the ABB 1SDA128903R1 E6.3V 4000 Ekip Aware LSIG 4p F HR Air Circuit Breaker?
The ABB 1SDA128903R1 is a high-performance low voltage air circuit breaker (ACB) designed for reliable protection, switching and intelligent management of high-capacity electrical distribution systems. As part of the advanced ABB SACE Emax 3 E6.3 series, it provides enhanced protection technology, robust construction and advanced monitoring capabilities for demanding industrial and critical power applications.
This air circuit breaker is equipped with an Ekip Aware LSIG electronic trip unit, providing comprehensive protection functions including long-time, short-time, instantaneous and ground fault protection. The Emax 3 platform integrates intelligent power management, diagnostics and scalable communication features to support modern electrical infrastructure.
With a 4000 A rated current, 4-pole fixed configuration, E6.3V frame design and rear horizontal terminals, the ABB 1SDA128903R1 is suitable for high-capacity switchboards, industrial distribution systems and critical electrical installations requiring dependable circuit protection.
Key Advantages
- Advanced ABB SACE Emax 3 air circuit breaker technology for reliable low voltage protection.
- 4000 A rated current suitable for demanding power distribution applications.
- Four-pole fixed design for complete circuit switching and protection.
- Integrated Ekip Aware LSIG protection unit for comprehensive fault management.
- E6.3V high-performance frame designed for large-scale electrical systems.
- Rear horizontal terminals support flexible switchgear installation.
Key Features
- ABB SACE Emax 3 E6.3 series air circuit breaker.
- Ekip Aware LSIG electronic trip unit.
- 4000 A rated uninterrupted current.
- 4-pole configuration.
- Fixed installation version.
- Rear horizontal (HR) terminal connection.
- Long-time, short-time, instantaneous and ground fault protection functions.
- Advanced diagnostics and monitoring capability for intelligent power systems.
Reliable Power Protection for Industrial Distribution
Air circuit breakers such as the ABB Emax 3 series provide essential protection against electrical faults while enabling safe switching and efficient control of modern power distribution networks. Intelligent electronic trip units allow precise protection settings, system diagnostics and improved operational visibility.
The Emax 3 platform is engineered for future-ready electrical infrastructure, combining adaptive protection, advanced sensing, predictive maintenance capabilities and secure connectivity to support reliable operation in demanding environments.
Typical Applications
- Main low voltage distribution switchboards.
- Industrial power distribution systems.
- Large manufacturing facilities.
- Commercial building electrical infrastructure.
- Energy management and monitoring systems.
- Critical power protection installations.
