Why Choose the ABB 1SDA124943R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA124943R1 is a high-performance low-voltage air circuit breaker (ACB) from the ABB SACE Emax 3 range, designed for reliable protection and switching of high-current electrical distribution systems. This model is an E6.3V 4000 Ekip Aware LSI three-pole fixed air circuit breaker with a 4000 A rated current and electronic LSI protection.
The Emax 3 E6.3 platform combines robust switching capability with the advanced Ekip Aware electronic release, providing configurable protection functions, monitoring and communication capabilities for modern low-voltage electrical distribution systems. The LSI configuration provides long-time, short-time and instantaneous overcurrent protection.
With a 4000 A rated current, three-pole configuration and fixed mounting arrangement with rear horizontally oriented terminals, the ABB 1SDA124943R1 is suitable for high-capacity switchboards, industrial power distribution and critical electrical infrastructure. The E6.3V 4000 version has a 150 kA rated ultimate short-circuit breaking capacity at 440 V and a 100 kA short-time withstand current for 1 s.
Key Advantages
- High-capacity ABB SACE Emax 3 E6.3 air circuit breaker for low-voltage power distribution.
- 4000 A rated current for high-current electrical installations.
- Three-pole configuration for three-phase power distribution systems.
- Integrated Ekip Aware LSI electronic protection release.
- 150 kA Icu at 440 V for demanding short-circuit protection requirements.
- 100 kA short-time withstand current for 1 s.
- Fixed installation with rear horizontally oriented terminals.
Key Features
- ABB SACE Emax 3 E6.3V series.
- 4000 A rated current.
- Ekip Aware LSI electronic release.
- Three-pole configuration.
- Fixed circuit breaker version.
- Long-time, short-time and instantaneous LSI protection functions.
- 150 kA rated ultimate short-circuit breaking capacity at 440 V.
- 100 kA rated short-time withstand current for 1 s.
- Rear horizontally oriented terminals (FHR).
- Supplied with four auxiliary contacts and breaker open/closed position indication.
Advanced Protection for High-Current Power Distribution
Air circuit breakers such as the ABB Emax 3 E6.3 provide switching and protection for high-current low-voltage electrical distribution systems. They are designed to interrupt fault currents and protect conductors, switchboards and connected equipment against damaging overcurrent conditions.
The integrated Ekip Aware LSI release provides electronic long-time, short-time and instantaneous protection functions. The Ekip Aware platform also supports advanced monitoring and communication capabilities, helping integrate protection equipment into modern electrical distribution and energy-management systems.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Large commercial electrical installations.
- Data centre and critical power infrastructure.
- Industrial plants and manufacturing facilities.
- High-capacity electrical distribution and protection systems.
