Why Choose the ABB SACE Emax 3 E4.3H 4000 Air Circuit Breaker?
The ABB 1SDA124927R1 is a high-performance SACE Emax 3 E4.3H 4000 air circuit breaker (ACB) designed for reliable protection, switching and control of high-capacity low-voltage electrical distribution systems. As part of the advanced ABB SACE Emax 3 circuit breaker series, it provides modern protection technology for industrial plants, infrastructure projects and critical power installations.
This circuit breaker combines high current handling capability with intelligent protection functionality through the integrated Ekip Aware LI trip unit. The fixed version with rear horizontal terminals provides a practical connection arrangement for switchboards while ensuring dependable operation in demanding electrical environments.
With a rated current of 4000 A and an ultimate short-circuit breaking capacity of 100 kA at 415 V AC, the ABB SACE Emax 3 E4.3H 4000 is designed for demanding power distribution applications requiring reliable fault interruption and robust electrical protection.
Key Advantages
- SACE Emax 3 air circuit breaker technology for advanced low-voltage power protection.
- 4000 A rated current for high-capacity electrical distribution applications.
- 100 kA Icu at 415 V AC for dependable short-circuit interruption performance.
- Integrated Ekip Aware LI trip unit providing long-time and instantaneous protection functions.
- Fixed version design for secure switchboard installation.
- Rear horizontal terminals provide a practical connection solution for large power assemblies.
Key Features
- ABB SACE Emax 3 series.
- E4.3H 4000 frame size.
- 3-pole air circuit breaker configuration.
- 4000 A rated current (In).
- 100 kA ultimate short-circuit breaking capacity (Icu) at 415 V AC.
- Ekip Aware LI trip unit.
- Fixed installation version.
- Rear horizontal terminal connection arrangement.
- Designed for large-scale industrial and infrastructure power distribution systems.
Reliable Power Protection for Industrial Systems
Air circuit breakers such as the ABB SACE Emax 3 E4.3H 4000 provide essential protection for electrical systems by detecting fault conditions and safely interrupting current flow. The integrated trip unit supports accurate protection coordination and improved reliability across demanding power networks.
The SACE Emax 3 platform is engineered for modern electrical distribution, combining high breaking performance, intelligent protection features and flexible installation configurations for large industrial applications.
Typical Applications
- Large industrial power distribution switchboards.
- Power generation and infrastructure installations.
- Main low-voltage distribution systems.
- Transformer and generator protection applications.
- Heavy industrial manufacturing facilities.
- Energy management and electrical automation systems.
