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1SDA055844R1 ABB E2B 2000 PR122/P-LSI 2000A 3-Pole Withdrawable Air Circuit Breaker Moving Part
ABB 1SDA055844R1 is a SACE Emax E2B 2000 A three-pole withdrawable air circuit breaker moving part with a PR122/P-LSI electronic overcurrent release for high-current low-voltage power distribution protection.
£11,694.77
Why Choose the ABB 1SDA055844R1 E2B 2000 Air Circuit Breaker?
The ABB 1SDA055844R1 is a high-performance SACE Emax E2B 2000 withdrawable air circuit breaker moving part designed for protection and switching in high-current low-voltage power distribution systems. This three-pole unit combines a 2000 A rated current with ABB's advanced PR122/P-LSI electronic overcurrent release, providing dependable protection for demanding industrial and commercial electrical installations.
As part of the ABB SACE Emax circuit breaker range, the E2B 2000 is engineered for protection of distribution networks, switchboards, transformers and high-current feeders. The PR122/P-LSI release provides long-time, short-time and instantaneous protection functions, enabling the breaker to respond effectively to overload and short-circuit conditions while supporting coordinated protection within low-voltage distribution systems.
This model is supplied as the moving part of a three-pole withdrawable circuit breaker with a rated current of 2000 A. It has a rated operational voltage of 690 V AC, a rated insulation voltage of 1000 V and an ultimate short-circuit breaking capacity of 42 kA across its specified AC operating-voltage range, making it suitable for robust high-current switchgear installations.
Key Advantages
- High-capacity 2000 A air circuit breaker moving part for low-voltage power distribution.
- Three-pole configuration designed for three-phase electrical systems.
- Withdrawable (W) construction supports maintainable switchboard installations.
- Advanced PR122/P-LSI electronic overcurrent release.
- LSI functionality provides long-time, short-time and instantaneous protection.
- 42 kA ultimate short-circuit breaking capacity for demanding distribution applications.
Key Features
- ABB SACE Emax E2B 2000 circuit breaker moving part.
- 2000 A rated current.
- Three-pole configuration.
- Withdrawable (W) version.
- PR122/P-LSI electronic trip unit.
- Long-time overload protection.
- Short-time and instantaneous short-circuit protection.
- 690 V AC rated operational voltage.
- 42 kA rated ultimate and service short-circuit breaking capacity.
- Supplied with four auxiliary contacts for circuit breaker open/closed position indication.
Reliable Protection for High-Current Power Distribution
Air circuit breakers such as the ABB SACE Emax E2B provide switching, isolation and automatic overcurrent protection for high-current low-voltage distribution circuits. The electronic trip unit monitors circuit current and initiates breaker operation when configured protection thresholds are exceeded, helping protect switchgear, conductors and connected electrical equipment against damaging overload and short-circuit conditions.
The PR122/P-LSI release gives this E2B 2000 long-time, short-time and instantaneous protection capabilities for effective coordination within electrical distribution systems. Its 2000 A rating, three-pole arrangement and withdrawable construction make it particularly suitable for switchboards where high-current protection, serviceability and operational flexibility are important.
Typical Applications
- Industrial low-voltage switchboards and distribution panels.
- Main incoming circuit protection.
- High-current three-phase distribution feeders.
- Transformer secondary circuit protection.
- Manufacturing plants and process facilities.
- Commercial and infrastructure power distribution systems.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code / MPN | 1SDA055844R1 |
| ABB product group | 310513-New Emax |
| Product type | Air circuit breaker moving part |
| Frame | E2B 2000 |
| Rated current (In) | 2000 A |
| Rated uninterrupted current (Iu) | 2000 A |
| Rated operational current (Ie) | 2000 A |
| Number of poles | 3 |
| Version | Withdrawable (W) |
| Trip unit | PR122/P-LSI |
| Release type | Electronic |
| Protection functions | Long-time, short-time and instantaneous (LSI) |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Ultimate short-circuit breaking capacity (Icu) | 42 kA |
| Service short-circuit breaking capacity (Ics) | 42 kA |
| Short-time withstand current (Icw), 1 s | 42 kA |
| Short-time withstand current (Icw), 3 s | 42 kA |
| Short-circuit performance level | B |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA055844R1?
The ABB 1SDA055844R1 is the moving part of a SACE Emax E2B 2000 three-pole withdrawable air circuit breaker, rated at 2000 A and fitted with a PR122/P-LSI electronic overcurrent release.
What protection functions does the PR122/P-LSI release provide?
The PR122/P-LSI provides long-time, short-time and instantaneous protection, collectively identified as LSI protection.
What is the rated current of the ABB 1SDA055844R1?
The circuit breaker moving part has a rated current of 2000 A, making it suitable for high-current low-voltage distribution applications.
Is the ABB 1SDA055844R1 fixed or withdrawable?
The 1SDA055844R1 is a withdrawable (W) version and is supplied as the moving part of the E2B 2000 circuit breaker system.
What is the short-circuit breaking capacity of the ABB E2B 2000 1SDA055844R1?
The breaker has a rated ultimate short-circuit breaking capacity of 42 kA and a rated service short-circuit breaking capacity of 42 kA across its specified AC operating-voltage range.
What voltage is the ABB 1SDA055844R1 rated for?
The E2B 2000 has a rated operational voltage of 690 V AC, with a rated insulation voltage of 1000 V and rated impulse withstand voltage of 12 kV.
Trusted by Electrical Professionals Worldwide
ABB SACE Emax air circuit breakers are engineered for dependable switching and protection in demanding low-voltage power distribution systems, supporting industrial, commercial and infrastructure installations where reliable high-current circuit protection is essential.
