Why Choose the ABB 1SDA125411R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA125411R1 is an Emax 3 low-voltage air circuit breaker configured as an E2.3S 1250 with an Ekip Aware LI electronic release and three poles. Designed for demanding electrical distribution systems, it provides adjustable long-time and instantaneous protection for reliable management of low-voltage power networks.
As part of the ABB Emax 3 air circuit breaker series, the 1SDA125411R1 combines electronic protection with a robust circuit-breaker platform for industrial and commercial power distribution. The Ekip Aware LI release provides long-time and instantaneous protection functions, supporting coordinated protection strategies within modern switchgear installations.
With a 1250 A rated current, three-pole configuration and WMP arrangement, the E2.3S 1250 is suited to high-current low-voltage distribution applications. The Emax 3 platform is designed for integration into professional switchgear assemblies where dependable circuit protection and switching are required.
Key Advantages
- Advanced ABB Emax 3 air circuit breaker for low-voltage power distribution.
- 1250 A rated current for high-current electrical distribution applications.
- Three-pole configuration for three-phase low-voltage systems.
- Integrated Ekip Aware LI electronic release for configurable protection.
- Long-time and instantaneous protection functions support coordinated electrical protection schemes.
- Designed for reliable integration into ABB Emax 3 switchgear assemblies.
Key Features
- ABB Emax 3 air circuit breaker series.
- E2.3S 1250 breaker frame and current rating.
- 1250 A rated current.
- Ekip Aware LI electronic release.
- 3-pole fixed configuration.
- Long-time and instantaneous protection functions.
- Adjustable protection settings for application-specific coordination.
- WMP configuration for the corresponding Emax 3 switchgear arrangement.
Reliable Protection for High-Current Power Distribution
Air circuit breakers are used in low-voltage switchboards to control and protect high-current electrical circuits. The ABB Emax 3 platform combines electronic trip technology with a robust breaker architecture, helping electrical engineers implement dependable protection and selective coordination in power distribution systems.
The Ekip Aware LI release provides configurable long-time and instantaneous protection functions. This enables the breaker to be configured according to the requirements of the electrical installation while supporting coordinated protection between upstream and downstream devices. The E2.3S 1250 variant is specified with an ultimate short-circuit breaking capacity of 85 kA at 440 V and a 66 kA short-time withstand current for 1 s.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Commercial and infrastructure electrical installations.
- High-current feeder and incomer protection.
- Manufacturing plant electrical distribution.
- ABB Emax 3 switchgear assemblies and replacement applications.
