Why Choose ABB 1SDA129019R1?
The ABB 1SDA129019R1 is a high-performance SACE Emax 3 E4.3H 4000 air circuit breaker moving part designed for reliable protection and control of low-voltage electrical distribution systems. As part of the advanced ABB SACE Emax 3 series, this withdrawable circuit breaker component provides dependable protection, monitoring and switching performance for demanding industrial and commercial power applications.
This model is supplied as the moving part only (WMP) of a withdrawable air circuit breaker, with the compatible fixed part ordered separately. The integrated Ekip Aware LSIG trip unit provides comprehensive long-time, short-time, instantaneous and ground-fault protection for electrical distribution installations.
With a 4000 A rated current, 4-pole configuration and 100 kA Icu at 415 V, the ABB SACE Emax 3 E4.3H 4000 is suited to high-capacity low-voltage power distribution applications requiring robust circuit protection and reliable operational performance.
Key Advantages
- High current capacity: Rated for continuous currents up to 4000 A.
- High breaking performance: Provides a 100 kA ultimate short-circuit breaking capacity at 415 V.
- Comprehensive protection: Ekip Aware LSIG trip unit supports long-time, short-time, instantaneous and ground-fault protection functions.
- Withdrawable architecture: Moving-part configuration supports practical installation, maintenance and replacement within a compatible withdrawable assembly.
- Four-pole protection: Provides switching and protection across all four poles for suitable low-voltage distribution systems.
- Industrial-grade design: Developed for demanding commercial and industrial electrical distribution applications.
Key Features
- Manufacturer: ABB
- Series: SACE Emax 3
- Model: E4.3H 4000
- Product type: Air circuit breaker moving part (WMP)
- Rated current: 4000 A
- Configuration: 4-pole
- Breaking capacity: 100 kA Icu at 415 V
- Trip unit: Ekip Aware LSIG
- Installation type: Withdrawable
- Supplied component: Moving part only; compatible fixed part ordered separately
Advanced Protection for Modern Power Distribution
The ABB SACE Emax 3 E4.3H 4000 combines high current-handling capability with an advanced Ekip Aware LSIG trip unit to support dependable protection of high-capacity low-voltage distribution systems. Its LSIG protection functions address long-time, short-time, instantaneous and ground-fault conditions, helping provide comprehensive circuit protection in demanding installations.
As a withdrawable moving part, the 1SDA129019R1 is intended for use with the appropriate SACE Emax 3 fixed part, which is ordered separately. This configuration supports practical maintenance and equipment management while providing the high breaking performance expected from the SACE Emax 3 platform.
Typical Applications
- Industrial low-voltage power distribution
- Commercial electrical distribution systems
- Main incoming and outgoing distribution protection
- High-capacity switchboards and electrical panels
- Industrial power infrastructure
- Electrical protection and switching systems requiring 4000 A capacity
