Why Choose the ABB 1SDA125764R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA125764R1 is an advanced Emax 3 E4.3S low-voltage air circuit breaker designed for reliable protection and control of high-current electrical distribution systems. This four-pole withdrawable circuit breaker is equipped with an Ekip Aware LSI electronic protection release and is rated for a nominal current of 3200 A.
As part of the ABB SACE Emax 3 series, the 1SDA125764R1 combines high-performance circuit interruption with configurable electronic protection. The Ekip Aware LSI release provides long-time, short-time and instantaneous protection functions for demanding industrial and commercial power distribution applications.
The E4.3S 3200 Ekip Aware LSI 4p WMP configuration provides four poles and a withdrawable moving-part arrangement, allowing the circuit breaker to be isolated and serviced efficiently within compatible switchgear. The E4.3S version provides a high short-circuit breaking capacity of 85 kA at 440 V AC, making it suitable for demanding low-voltage electrical installations.
Key Advantages
- High-performance ABB Emax 3 air circuit breaker for low-voltage power distribution.
- 3200 A rated current for high-current electrical systems.
- Four-pole configuration for comprehensive circuit protection and isolation.
- Advanced Ekip Aware LSI electronic protection release.
- 85 kA short-circuit breaking capacity at 440 V AC.
- Withdrawable moving-part construction supports convenient inspection and maintenance.
Key Features
- ABB Emax 3 E4.3S series.
- 3200 A rated current.
- Four-pole configuration.
- Ekip Aware LSI electronic protection release.
- 85 kA short-circuit breaking capacity at 440 V AC.
- 66 kA rated short-time withstand current for 1 s.
- Withdrawable WMP moving-part configuration.
- Long-time, short-time and instantaneous electronic protection functions.
Reliable Protection for High-Current Power Distribution
Air circuit breakers such as the ABB Emax 3 E4.3S protect electrical distribution systems by detecting abnormal current conditions and interrupting the circuit when protection thresholds are reached. Electronic protection releases provide configurable protection characteristics, helping the circuit breaker respond appropriately to overloads and short-circuit conditions.
The Emax 3 platform is designed for demanding low-voltage power distribution applications where high current ratings, advanced electronic protection and maintenance flexibility are required. The Ekip Aware LSI release combines electronic long-time, short-time and instantaneous protection with monitoring capabilities for modern electrical distribution systems.
Typical Applications
- Industrial low-voltage power distribution systems.
- Main switchboards and electrical distribution boards.
- Commercial building power distribution.
- Transformer and generator protection systems.
- High-current industrial electrical installations.
- Power management and electrical infrastructure applications.
