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1SDA128893R1 ABB E4.3V 2500 Ekip Aware LSIG 4-Pole Air Circuit Breaker
ABB 1SDA128893R1 is a SACE Emax 3 E4.3V 2500 A four-pole fixed air circuit breaker with horizontal rear terminals and an Ekip Aware LSIG electronic trip unit for advanced low-voltage power distribution protection.
£14,787.03
Why Choose the ABB 1SDA128893R1 E4.3V 2500 Ekip Aware LSIG Air Circuit Breaker?
The ABB 1SDA128893R1 is a high-performance SACE Emax 3 E4.3V air circuit breaker designed for protection and control of demanding low-voltage power distribution systems. Rated at 2500 A, this four-pole breaker combines the E4.3V platform with an advanced Ekip Aware LSIG electronic trip unit for comprehensive electrical protection.
The Ekip Aware LSIG release provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. This combination supports selective and dependable protection in industrial, commercial and infrastructure power systems where continuity of service and effective fault management are important.
This configuration is a four-pole fixed (F) breaker with horizontal rear (HR) terminals. The E4.3V performance class provides a short-circuit breaking capacity of up to 150 kA and a short-time withstand current of 100 kA for 1 second, making the breaker suitable for high-fault-level low-voltage installations.
Key Advantages
- High-performance ABB SACE Emax 3 E4.3V air circuit breaker.
- 2500 A rated current for high-power distribution applications.
- Four-pole configuration for comprehensive circuit switching and protection.
- Advanced Ekip Aware LSIG electronic protection.
- Short-circuit breaking capacity of up to 150 kA.
- 100 kA short-time withstand current for 1 second.
- Fixed construction with horizontal rear terminals for switchboard integration.
Key Features
- ABB SACE Emax 3 E4.3V frame and performance class.
- 2500 A rated current.
- 4-pole configuration.
- Fixed (F) execution.
- Horizontal rear (HR) terminals.
- Ekip Aware LSIG electronic trip unit.
- Long-time overload protection (L).
- Short-time short-circuit protection (S).
- Instantaneous short-circuit protection (I).
- Earth-fault protection (G).
- Designed for high-performance low-voltage power distribution and switchgear.
Advanced Protection for High-Power Distribution Systems
Air circuit breakers such as the ABB SACE Emax 3 are used as primary switching and protection devices in low-voltage distribution systems where high continuous currents and substantial prospective fault currents must be controlled safely. The E4.3V platform combines high interruption performance with advanced electronic protection for demanding switchboard applications.
The Ekip Aware LSIG trip unit provides coordinated protection against overloads, short circuits and earth faults. Together with the 2500 A current rating and high short-circuit performance of the E4.3V frame, this makes the 1SDA128893R1 suitable for critical industrial and infrastructure power-distribution installations.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power distribution systems.
- Transformer secondary protection.
- Commercial and infrastructure electrical systems.
- High-fault-level switchgear installations.
- Critical power and process-industry distribution systems.
Technical Specifications
| Series | SACE Emax 3 |
|---|---|
| Product group | Emax 3 |
| ABB order code | 1SDA128893R1 |
| Product type | Air circuit breaker |
| Frame size | E4.3 |
| Performance class | V |
| Rated current | 2500 A |
| Number of poles | 4 |
| Trip unit | Ekip Aware LSIG |
| Protection functions | L, S, I, G |
| Execution | Fixed |
| Terminal configuration | Horizontal rear (HR) |
| Short-circuit breaking capacity | 150 kA |
| Short-time withstand current (Icw, 1 s) | 100 kA |
| EAN | 8056221305228 |
Frequently Asked Questions
What is the rated current of the ABB 1SDA128893R1?
The ABB 1SDA128893R1 Emax 3 E4.3V air circuit breaker has a rated current of 2500 A.
What protection functions does the Ekip Aware LSIG trip unit provide?
The Ekip Aware LSIG trip unit provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection.
What is the short-circuit performance of the E4.3V 2500 breaker?
The E4.3V 2500 configuration provides a short-circuit breaking capacity of up to 150 kA and a short-time withstand current of 100 kA for 1 second.
Is the ABB 1SDA128893R1 fixed or withdrawable?
This configuration is a fixed (F) four-pole air circuit breaker with horizontal rear terminals.
What does HR mean in the E4.3V 2500 Ekip Aware LSIG 4p F HR designation?
HR identifies the horizontal rear terminal configuration used for connecting the circuit breaker within compatible low-voltage switchgear.
Trusted ABB Power Distribution Technology
ABB SACE Emax 3 air circuit breakers combine high-performance fault interruption, advanced electronic protection and flexible switchgear integration for reliable low-voltage power distribution in industrial, commercial and infrastructure applications.
