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1SDA072556R1 ABB E4.2S 4000 Ekip Touch LSIG 3-Pole Air Circuit Breaker
ABB 1SDA072556R1 is a SACE Emax 2 E4.2S 4000 A three-pole withdrawable air circuit breaker moving part with an Ekip Touch LSIG electronic trip unit for comprehensive high-current low-voltage power distribution protection.
£19,470.17
Why Choose the ABB 1SDA072556R1 E4.2S 4000 Ekip Touch LSIG Air Circuit Breaker?
The ABB 1SDA072556R1 is a high-performance SACE Emax 2 E4.2S 4000 air circuit breaker moving part designed for protection and switching in demanding low-voltage electrical distribution systems. This three-pole configuration combines a 4000 A rated uninterrupted current with an advanced Ekip Touch LSIG electronic trip unit, providing comprehensive overload, short-circuit and ground-fault protection.
As part of the ABB SACE Emax 2 range, the E4.2S combines high-current switching capability with electronic protection and an intuitive touchscreen-based interface. The Ekip Touch LSIG release provides long-time, short-time, instantaneous and ground-fault protection functions, making this breaker well suited to installations requiring comprehensive protection and effective coordination.
This model is a 3-pole withdrawable moving part (WMP) rated at 4000 A and 690 V AC. The E4.2S performance level provides a rated ultimate short-circuit breaking capacity of 85 kA at 400–440 V AC and 66 kA at 500–690 V AC, supporting reliable protection in high-current switchboards and critical distribution systems.
Key Advantages
- High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage power distribution.
- 4000 A rated uninterrupted current for high-current industrial and infrastructure applications.
- Ekip Touch LSIG electronic trip unit with touchscreen-based configuration and monitoring.
- LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
- 85 kA Icu at 400–440 V AC for high-fault-level distribution systems.
- 66 kA Icu at 500–690 V AC for higher-voltage low-voltage networks.
- Withdrawable moving-part design supports efficient switchboard servicing and maintenance.
Key Features
- ABB SACE Emax 2 E4.2S frame.
- 4000 A rated uninterrupted current.
- 3-pole configuration.
- Ekip Touch LSIG solid-state electronic release.
- Long-time L overload protection.
- Short-time S delayed short-circuit protection.
- Instantaneous I short-circuit protection.
- Integrated ground-fault G protection.
- 690 V AC rated operational voltage.
- 85 kA Icu at 400–440 V AC.
- 66 kA Icu at 500–690 V AC.
- 4 auxiliary change-over contacts.
- Circuit-breaker open/closed position indication.
- Withdrawable moving part (WMP) configuration.
Comprehensive LSIG Protection for High-Current Power Distribution
Air circuit breakers such as the ABB SACE Emax 2 E4.2S provide switching and protection for high-current low-voltage distribution circuits. The Ekip Touch electronic trip unit monitors circuit conditions and initiates interruption when configured protection thresholds are exceeded, helping protect switchgear, conductors and connected equipment against overload, short-circuit and ground-fault currents.
The Ekip Touch LSIG release combines long-time overload protection with short-time delayed, instantaneous and ground-fault protection. Together with the E4.2S frame and withdrawable architecture, the 1SDA072556R1 provides a capable solution for installations where comprehensive electronic protection, high-current performance, selective coordination and maintainability are important.
Typical Applications
- Main incoming protection in high-current low-voltage switchboards.
- Industrial power distribution systems.
- Transformer protection and secondary distribution.
- High-current feeder protection.
- Commercial and infrastructure electrical distribution.
- Power generation and utility distribution systems.
- Power distribution centres and critical electrical installations.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| ABB order code | 1SDA072556R1 |
| EAN | 8015644764067 |
| Product type | Air circuit breaker moving part |
| Frame | E4.2S |
| Short-circuit performance level | S |
| Rated current (In) | 4000 A |
| Rated uninterrupted current (Iu) | 4000 A |
| Number of poles | 3 |
| Trip unit | Ekip Touch LSIG |
| Release type | Solid-state electronic |
| Protection functions | L, S, I and G |
| Overload release current setting | From 1600 A |
| Short-time delayed short-circuit setting | From 2400 A |
| Instantaneous short-circuit setting | From 6000 A |
| Integrated earth-fault protection | Yes |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V AC |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) at 400–440 V AC | 85 kA |
| Rated ultimate short-circuit breaking capacity (Icu) at 500–690 V AC | 66 kA |
| Rated service short-circuit breaking capacity (Ics) | 100% of Icu |
| Electrical durability at ≤440 V | 5000 cycles |
| Electrical durability at 500–690 V | 4000 cycles |
| Mechanical durability | 15,000 cycles |
| Power loss | 900 W |
| Auxiliary contacts | 4 change-over contacts |
| Open/closed indication | Yes |
| Motor drive | Optional |
| Degree of protection | IP30 |
| Main-circuit connection | Connection at separate chassis part |
| Configuration | Withdrawable moving part (WMP) |
| Product net dimensions (W × H × D) | 425 × 425 × 383 mm |
| Product net weight | 60 kg |
| Product group | Emax2 Air Circuit Breaker |
Frequently Asked Questions
What is the ABB 1SDA072556R1?
The ABB 1SDA072556R1 is a SACE Emax 2 E4.2S 4000 A three-pole withdrawable air circuit breaker moving part equipped with an Ekip Touch LSIG electronic trip unit.
What is the rated current of the ABB E4.2S 1SDA072556R1?
The ABB 1SDA072556R1 has a rated uninterrupted current of 4000 A, making it suitable for demanding high-current low-voltage distribution systems.
What protection functions does the Ekip Touch LSIG trip unit provide?
The Ekip Touch LSIG provides L long-time overload, S short-time delayed short-circuit, I instantaneous short-circuit and G ground-fault protection.
Does the ABB 1SDA072556R1 provide ground-fault protection?
Yes. This model uses an Ekip Touch LSIG release with integrated ground-fault protection in addition to long-time, short-time and instantaneous protection.
What is the breaking capacity of the ABB 1SDA072556R1?
The E4.2S has a rated ultimate short-circuit breaking capacity of 85 kA at 400–440 V AC and 66 kA at 500–690 V AC.
What auxiliary contacts are fitted to the ABB 1SDA072556R1?
The breaker moving part is fitted with 4 auxiliary change-over contacts together with circuit-breaker open/closed position indication.
Is the ABB 1SDA072556R1 fixed or withdrawable?
This model is supplied as a withdrawable moving part (WMP) with its main-circuit connection made through the appropriate separate SACE Emax 2 chassis part.
Where is the ABB E4.2S 4000 Ekip Touch LSIG typically used?
It is suitable for demanding low-voltage distribution applications including main switchboards, industrial power systems, transformer protection, high-current feeders, infrastructure systems and critical electrical installations.
Trusted by Electrical Professionals Worldwide
ABB SACE Emax 2 air circuit breakers are designed for demanding low-voltage power distribution systems where dependable electronic protection, high short-circuit performance and maintainable switchgear architecture are required.
