Why Choose the ABB 1SDA125788R1 Emax 3 E4.3H 4000 Ekip Aware LI 4p WMP?
The ABB 1SDA125788R1 is a high-performance low-voltage air circuit breaker (ACB) designed for reliable protection and switching in demanding electrical distribution systems. As part of the advanced ABB SACE Emax 3 E4.3H series, this four-pole withdrawable circuit breaker combines a 4000 A frame rating with an Ekip Aware LI electronic trip unit for intelligent overcurrent protection.
The Emax 3 platform provides advanced sensing, protection and connectivity capabilities for modern power distribution applications. The Ekip Aware release supports intelligent circuit protection while the withdrawable WMP configuration allows the breaker to be removed from its fixed part for maintenance and servicing.
With a rated current of 4000 A and a high short-circuit breaking capacity of 100 kA at 440 V AC, the ABB 1SDA125788R1 is suited to high-current main distribution systems, industrial switchboards and critical power infrastructure where dependable circuit protection is required.
Key Advantages
- High-capacity ABB SACE Emax 3 air circuit breaker for low-voltage power distribution.
- 4000 A rated current for high-current electrical installations.
- Four-pole configuration for comprehensive circuit switching and protection.
- Ekip Aware LI electronic protection for intelligent overcurrent protection.
- 100 kA short-circuit breaking capacity at 440 V AC.
- Withdrawable WMP configuration simplifies inspection, maintenance and replacement.
Key Features
- ABB SACE Emax 3 E4.3H series.
- 4000 A rated current.
- 4-pole circuit breaker.
- Ekip Aware LI electronic trip unit.
- 100 kA Icu at 440 V AC.
- 85 kA Icw for 1 s.
- Withdrawable WMP mobile portion configuration.
- Advanced sensing, diagnostics and connectivity capabilities through the Emax 3 platform.
Intelligent Protection for High-Current Power Distribution
The ABB Emax 3 platform is engineered for modern low-voltage power distribution, combining advanced protection, measurement and connectivity functions in a robust air circuit breaker architecture. Its Ekip Aware technology provides intelligent monitoring and protection capabilities for demanding electrical installations.
The E4.3H 4000 frame is designed for high-current applications where substantial interrupting performance is required. The withdrawable WMP arrangement also supports practical maintenance procedures by allowing the mobile circuit-breaker portion to be withdrawn from the associated fixed assembly.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power distribution systems.
- Commercial and infrastructure electrical installations.
- Large manufacturing and processing facilities.
- Critical power and high-availability electrical systems.
- Power distribution assemblies requiring withdrawable circuit breakers.
