Why Choose the ABB 1SDA124907R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA124907R1 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 E4.3H 3200 Ekip Aware LI three-pole fixed air circuit breaker with a 3200 A rated current and electronic LI protection.
The Emax 3 platform combines advanced electronic protection with robust switching performance for demanding low-voltage power distribution applications. The integrated Ekip Aware LI release provides long-time and instantaneous overcurrent protection, supporting accurate protection settings for industrial, commercial and infrastructure installations.
With a 3200 A rated current, three-pole configuration and fixed mounting arrangement with horizontally oriented rear terminals, the ABB 1SDA124907R1 is suitable for high-capacity switchboards, industrial power distribution and critical electrical infrastructure. The E4.3H 3200 version provides a 100 kA rated ultimate short-circuit breaking capacity at 440 V and an 85 kA short-time withstand current for 1 s.
Key Advantages
- High-capacity ABB SACE Emax 3 air circuit breaker for low-voltage power distribution.
- 3200 A rated current for high-current electrical installations.
- Three-pole configuration for three-phase power distribution systems.
- Integrated Ekip Aware LI electronic protection release.
- 100 kA Icu at 440 V for demanding short-circuit protection requirements.
- 85 kA short-time withstand current for 1 s.
- Fixed installation with horizontally oriented rear terminals.
Key Features
- ABB SACE Emax 3 E4.3H series.
- 3200 A rated current.
- Ekip Aware LI electronic release.
- Three-pole configuration.
- Fixed circuit breaker version.
- Long-time and instantaneous LI protection functions.
- 100 kA rated ultimate short-circuit breaking capacity at 440 V.
- 85 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 E4.3H 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 LI release provides electronic protection against long-duration overloads and instantaneous short-circuit conditions. This enables the breaker to be configured for the protection requirements of large electrical distribution systems while supporting selective coordination with other protective devices.
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.
- Transformer, generator and installation protection systems.
