Why Choose the ABB 1SDA128944R1 SACE Emax 3 E2.3H 1250 Air Circuit Breaker?
The ABB 1SDA128944R1 is a high-performance SACE Emax 3 air circuit breaker designed for reliable protection and control of low-voltage electrical distribution systems. This E2.3H 1250 model features a 3-pole configuration, a rated current of 1250 A and an Ekip Aware LSIG trip unit for comprehensive electronic circuit protection.
As part of the advanced ABB SACE Emax 3 air circuit breaker series, the E2.3H 1250 is designed for demanding industrial, commercial and infrastructure power distribution applications. The Ekip Aware LSIG trip unit provides long-time, short-time, instantaneous and earth-fault protection functions to support dependable operation and effective circuit management.
With a rated current of 1250 A and an ultimate short-circuit breaking capacity of 100 kA at 415 V, the 1SDA128944R1 is suitable for high-current distribution applications requiring a robust protection solution. This is a withdrawable moving part only (WMP); the compatible fixed part is ordered separately for the installation.
Key Advantages
- High-capacity air circuit breaker designed for low-voltage power distribution.
- 1250 A rated current suitable for demanding electrical distribution systems.
- 100 kA Icu at 415 V for high short-circuit interruption capability.
- 3-pole configuration for three-phase distribution applications.
- Advanced Ekip Aware LSIG trip unit for comprehensive electronic protection.
- Withdrawable moving part only (WMP) configuration for compatible SACE Emax 3 installations.
Key Features
- ABB SACE Emax 3 E2.3H 1250 air circuit breaker.
- 1250 A rated current.
- 3-pole circuit breaker configuration.
- 100 kA Icu at 415 V.
- Ekip Aware LSIG trip unit.
- Integrated LSIG protection functions covering long-time, short-time, instantaneous and earth-fault protection.
- Withdrawable version for compatible switchgear applications.
- Moving part only (WMP); fixed part ordered separately.
Advanced Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB SACE Emax 3 provide controlled switching and protection for high-current low-voltage electrical distribution systems. The 1SDA128944R1 combines a 1250 A rated current with an 100 kA Icu at 415 V to support demanding feeder and distribution circuit applications.
The integrated Ekip Aware LSIG trip unit provides electronic protection across long-time, short-time, instantaneous and earth-fault conditions. Its withdrawable moving-part configuration also supports switchgear arrangements where the breaker can be withdrawn from its separately ordered fixed part for servicing and system management.
Typical Applications
- Low-voltage power distribution systems.
- Industrial electrical switchboards.
- Commercial and infrastructure power distribution.
- High-current feeder protection.
- Incoming circuit protection and switching.
- Industrial power management systems.
- Withdrawable low-voltage switchgear assemblies.
- Electrical installations requiring 1250 A circuit protection.
