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ABB SACE Emax 3 E4.3N 4000 ACB 3 Pole 4000A 66kA Ekip Aware LSI Fixed Rear Terminals
ABB 1SDA124918R1 is an E4.3N 4000 A three-pole fixed SACE Emax 3 air circuit breaker with Ekip Aware LSI electronic protection for high-current low-voltage power distribution.
£13,923.92
Why Choose the ABB 1SDA124918R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA124918R1 is a high-performance low-voltage air circuit breaker (ACB) from the ABB SACE Emax 3 range, designed for reliable protection and control of high-current electrical distribution systems. This model is an E4.3N 4000 Ekip Aware LSI three-pole fixed air circuit breaker with a 4000 A rated current and electronic LSI protection.
The Emax 3 platform combines advanced electronic protection with robust switching performance for demanding low-voltage power distribution applications. The integrated Ekip Aware LSI release provides long-time, short-time and instantaneous protection functions, supporting accurate protection settings for large electrical installations.
With a 4000 A rated current, three-pole configuration and fixed mounting arrangement with horizontally oriented rear terminals, the ABB 1SDA124918R1 is suitable for high-capacity switchboards, industrial power distribution and critical electrical infrastructure. ABB documentation identifies the E4.3N 4000 version with an Icu of 66 kA at 440 V and an Icw of 66 kA for 1 s.
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.
- Three-pole configuration for three-phase power distribution systems.
- Integrated Ekip Aware LSI electronic protection release.
- 66 kA Icu at 440 V for demanding short-circuit protection requirements.
- 66 kA short-time withstand current for 1 s.
- Fixed installation with horizontally oriented rear terminals.
Key Features
- ABB SACE Emax 3 E4.3N series.
- 4000 A rated current.
- Ekip Aware LSI electronic trip unit.
- Three-pole configuration.
- Fixed circuit breaker version.
- Long-time, short-time and instantaneous LSI protection functions.
- 66 kA rated ultimate short-circuit breaking capacity at 440 V.
- 66 kA rated short-time withstand current for 1 s.
- Rear horizontally oriented terminals (FHR).
Advanced Protection for High-Current Power Distribution
Air circuit breakers such as the ABB Emax 3 E4.3N 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 protection against long-duration overloads, short-time overcurrents 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.
- High-capacity electrical distribution and protection systems.
Technical Specifications
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| Device Type | ACB | |
|---|---|---|
| Current | 4000 A | |
| Poles | 3-pole | |
| Phase | Three Phase | |
| Breaking Capacity | 66 kA | |
| Trip Unit | LSI | |
| Application | Power distribution | |
| Mounting Type | Fixed | |
| Manufacturer | ABB | |
| Series | SACE Emax 3 | |
| Model | E4.3N 4000 Ekip Aware LSI 3p FHR | |
| Order code | 1SDA124918R1 | |
| Product type | Low-voltage air circuit breaker | |
| Rated current | 4000 A | |
| Number of poles | 3-pole | |
| Release unit | Ekip Aware LSI electronic release | |
| Protection functions | LSI | |
| Installation | Fixed version | |
| Terminal configuration | Rear horizontally oriented terminals (FHR) | |
| Rated ultimate short-circuit breaking capacity Icu at 440 V | 66 kA | |
| Rated short-time withstand current Icw for 1 s | 66 kA | |
| EAN | 8056221254700 | |
| HS Code | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA124918R1 used for?
The ABB 1SDA124918R1 is a three-pole Emax 3 air circuit breaker designed for protection and switching in high-current low-voltage electrical distribution systems.
What is the rated current of the ABB 1SDA124918R1?
The E4.3N circuit breaker has a rated current of 4000 A.
What type of protection release does this circuit breaker have?
The 1SDA124918R1 is equipped with an Ekip Aware LSI electronic release providing long-time, short-time and instantaneous protection functions.
What is the short-circuit breaking capacity?
The E4.3N 4000 version has a rated ultimate short-circuit breaking capacity of 66 kA at 440 V.
Is the ABB 1SDA124918R1 fixed or withdrawable?
The 1SDA124918R1 is a fixed three-pole version with rear horizontally oriented terminals.
Trusted by Power Distribution Professionals Worldwide
ABB SACE Emax 3 air circuit breakers are designed for dependable switching, protection and control in demanding low-voltage power distribution systems, supporting high-capacity electrical infrastructure across industrial and commercial applications.
