Why Choose the ABB 1SDA125739R1?
The ABB 1SDA125739R1 is an SACE Emax 3 E2.3S 2500 air circuit breaker moving part designed for high-capacity low-voltage power distribution and protection applications. It combines a 2500 A rated current with an Ekip Aware LSI electronic trip unit for dependable overload and short-circuit protection.
This 4-pole withdrawable moving part (WMP) is designed for use with compatible ABB SACE Emax 3 fixed parts, providing a practical solution for switchboards where draw-out operation, maintenance access and reliable circuit protection are required.
With its E2.3S high-performance platform, Ekip Aware LSI protection and 4-pole configuration, the 1SDA125739R1 is suited to demanding industrial, commercial and infrastructure power-distribution systems requiring high-current circuit protection.
Key Advantages
- High 2500 A current rating: Suitable for high-capacity low-voltage distribution systems.
- E2.3S high-performance frame: Designed for demanding power-distribution and circuit-protection applications.
- Ekip Aware LSI protection: Provides long-time, short-time and instantaneous overcurrent protection functions.
- 4-pole configuration: Supports three-phase systems where neutral switching and protection are required.
- Withdrawable moving part: Designed for compatible Emax 3 draw-out assemblies to support installation, inspection and maintenance.
- ABB SACE Emax 3 compatibility: Engineered as part of ABB's modular Emax 3 air circuit breaker platform.
Key Features
- Manufacturer: ABB
- Part number: 1SDA125739R1
- Product family: SACE Emax 3
- Breaker type: E2.3S
- Rated current: 2500 A
- Configuration: 4-pole
- Execution: Withdrawable moving part (WMP)
- Electronic trip unit: Ekip Aware
- Protection functions: LSI
- Long-time protection setting range: 1000–2500 A
- Instantaneous protection setting range: 3750–37500 A
- EAN: 8056221262910
Power Distribution & Protection
The ABB SACE Emax 3 E2.3S platform is designed for high-current low-voltage power distribution, combining advanced Ekip electronic protection with a robust air circuit breaker architecture. The Ekip Aware LSI trip unit provides long-time, short-time and instantaneous protection functions for applications requiring reliable circuit interruption and protection.
As a 4-pole withdrawable moving part, the ABB 1SDA125739R1 is intended for compatible Emax 3 switchboards and distribution assemblies where draw-out functionality can simplify inspection, servicing and replacement. Its 2500 A rating makes it suitable for high-demand electrical distribution systems in industrial, commercial and infrastructure installations.
Typical Applications
- Main and secondary low-voltage distribution boards
- Industrial electrical distribution systems
- Commercial building power distribution
- Infrastructure and utility switchboards
- High-current feeder protection
- Generator and transformer distribution sections
- Manufacturing and process-industry electrical systems
- Switchboards requiring withdrawable circuit breaker technology
