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ABB SACE Emax 3 E4.3N 4000 ACB 3 Pole 4000A 66kA Ekip Aware LSIG Fixed Rear Terminals
ABB 1SDA128843R1 Emax 3 air circuit breaker with Ekip Aware LSIG protection and 4000 A rated current for industrial low-voltage power distribution systems.
£14,448.73
Why Choose the ABB 1SDA128843R1 Emax 3 Air Circuit Breaker?
The ABB 1SDA128843R1 is a high-performance SACE Emax 3 air circuit breaker designed for reliable protection, control and monitoring of low-voltage electrical distribution systems. As part of the advanced ABB Emax 3 circuit breaker series, it provides intelligent protection technology for industrial plants, infrastructure projects and critical power installations.
This breaker incorporates an advanced Ekip Aware LSIG electronic trip unit, delivering comprehensive protection functions including long-time, short-time, instantaneous and earth fault protection. Its fixed three-pole design with rear horizontal connections provides a robust solution for high-capacity switchboards and demanding electrical distribution applications.
With a rated current of 4000 A, the ABB 1SDA128843R1 is engineered for large-scale electrical systems requiring dependable circuit interruption, advanced diagnostics and intelligent monitoring. The Emax 3 platform combines digital protection technology with flexible communication capabilities to support modern energy management requirements.
Key Advantages
- Advanced ABB SACE Emax 3 air circuit breaker for high-capacity power distribution.
- 4000 A rated current suitable for demanding electrical installations.
- Integrated Ekip Aware LSIG protection for complete circuit protection.
- Fixed three-pole construction for reliable switchboard installation.
- Intelligent monitoring and diagnostic capabilities.
- Designed for industrial, commercial and infrastructure power systems.
Key Features
- ABB SACE Emax 3 air circuit breaker series.
- E4.3N frame size configuration.
- 4000 A rated current.
- Ekip Aware LSIG electronic release.
- Three-pole fixed version.
- Rear horizontal connection configuration.
- Long-time, short-time, instantaneous and earth fault protection functions.
- Compatible with modern digital energy management systems.
Advanced Protection for Industrial Power Systems
Air circuit breakers such as the ABB Emax 3 range continuously monitor electrical conditions and interrupt fault currents when abnormal situations occur. This helps protect valuable equipment, improve system availability and support safe operation of electrical networks.
The Emax 3 series combines ABB’s established circuit breaker technology with intelligent Ekip Aware protection units, providing enhanced diagnostics, flexible configuration and seamless integration into modern industrial power systems.
Typical Applications
- Industrial power distribution systems.
- Large electrical switchboards and main distribution panels.
- Transformer and generator protection.
- Commercial infrastructure electrical systems.
- Energy management and monitoring installations.
- Critical power protection applications.
Technical Specifications
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| Device Type | ACB | |
|---|---|---|
| Current | 4000 A | |
| Poles | 3-pole | |
| Phase | Three Phase | |
| Breaking Capacity | 66 kA | |
| Trip Unit | LSIG | |
| Application | Power distribution | |
| Mounting Type | Fixed | |
| Manufacturer | ABB | |
| Series | SACE Emax 3 | |
| Model | 1SDA128843R1 | |
| Product type | Air circuit breaker | |
| Breaker type | E4.3N 4000 Ekip Aware LSIG 3p F HR | |
| Rated current | 4000 A | |
| Number of poles | 3 | |
| Protection unit | Ekip Aware LSIG | |
| Installation type | Fixed mounting | |
| Connection type | Horizontal rear terminals | |
| HS Code | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA128843R1 used for?
The ABB 1SDA128843R1 is an Emax 3 air circuit breaker designed for protecting and controlling high-capacity low-voltage electrical distribution systems.
What rated current does this circuit breaker support?
The ABB 1SDA128843R1 supports a rated current of 4000 A.
What protection unit is included?
This circuit breaker includes an Ekip Aware LSIG electronic protection unit with advanced overload, short-circuit and earth fault protection functions.
How many poles does this ABB breaker have?
The ABB 1SDA128843R1 is configured as a three-pole fixed air circuit breaker.
Where is this circuit breaker typically installed?
The breaker is typically installed in industrial switchboards, main distribution panels and critical electrical infrastructure systems.
Trusted by Electrical Engineers Worldwide
ABB Emax 3 air circuit breakers are trusted by electrical engineers and system designers for reliable protection, intelligent monitoring and efficient operation across modern power distribution networks.
