Why Choose the ABB 1SDA128911R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA128911R1 is a high-capacity SACE Emax 3 low-voltage air circuit breaker designed for reliable protection, switching and monitoring in demanding electrical distribution and industrial power systems. It is an E6.3H/f 4000 Ekip Aware LSIG 4-pole fixed circuit breaker with horizontal rear terminals, providing advanced electronic protection for high-current installations.
As part of the advanced ABB Emax 3 air circuit breaker series, the 1SDA128911R1 combines high-current switching capability with Ekip electronic protection and Ekip Aware functionality. Its LSIG protection configuration provides long-time, short-time, instantaneous and earth-fault protection functions for comprehensive circuit protection.
With a rated continuous current of 4000 A, a four-pole configuration and a 690 V AC rated voltage, this fixed-version breaker is suitable for high-power distribution systems, industrial switchboards and electrical installations requiring dependable protection and monitoring. The horizontal rear connection arrangement supports integration into appropriately designed switchgear assemblies.
Key Advantages
- High-capacity ABB SACE Emax 3 air circuit breaker for low-voltage power distribution.
- 4000 A rated continuous current for high-power electrical installations.
- Four-pole fixed configuration with a full-size neutral pole arrangement.
- Ekip Aware LSIG electronic protection for comprehensive circuit protection and monitoring.
- Horizontal rear terminal arrangement for switchboard integration.
- High interrupting capability suitable for demanding industrial distribution systems.
Key Features
- ABB SACE Emax 3 E6.3H/f series.
- 4000 A rated continuous current.
- 690 V AC rated voltage.
- Four-pole configuration.
- Ekip Aware LSIG electronic release.
- Long-time, short-time, instantaneous and earth-fault protection functions.
- Fixed installation configuration.
- Horizontal rear terminals for the main circuit.
- Designed for high-current low-voltage power distribution.
Advanced Protection for High-Current Power Distribution
Air circuit breakers such as the ABB Emax 3 protect electrical distribution systems by detecting abnormal current conditions and interrupting the circuit when protection thresholds are reached. The Ekip Aware LSIG electronic release provides configurable protection functions covering overload, short-circuit and earth-fault conditions.
The Emax 3 platform is designed for modern low-voltage switchgear and high-power electrical distribution applications. Its electronic protection architecture and Ekip Aware functionality support detailed system monitoring while the fixed four-pole construction provides a robust solution for installations where the neutral conductor requires switching and protection arrangements.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial electrical distribution systems.
- High-capacity commercial power installations.
- Transformer and generator protection systems.
- Power distribution centres and electrical substations.
- Industrial switchgear and high-current feeder applications.
- Large-scale infrastructure and building electrical systems.
