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1SDA055943R1 ABB E2N 2000 PR123/P-LSIG 2000 A 3-Pole Withdrawable Air Circuit Breaker
ABB 1SDA055943R1 is a SACE Emax E2N 2000 A three-pole withdrawable air circuit breaker moving part with a PR123/P-LSIG electronic overcurrent release for comprehensive low-voltage power distribution protection.
£18,622.70
Why Choose the ABB E2N 2000 PR123/P-LSIG 1SDA055943R1 Air Circuit Breaker?
The ABB 1SDA055943R1 is a high-performance SACE Emax E2N 2000 air circuit breaker (ACB) moving part designed for dependable switching and comprehensive protection in demanding low-voltage electrical distribution systems. As part of the ABB SACE Emax E2 series, this three-pole withdrawable circuit breaker is equipped with the advanced PR123/P-LSIG electronic overcurrent release.
With a rated current of 2000 A, the E2N 2000 is engineered for high-current industrial and commercial power distribution applications. The PR123/P-LSIG trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection, delivering comprehensive LSIG protection for critical electrical installations.
The E2N performance level provides a rated ultimate short-circuit breaking capacity of 65 kA at 400–415 V AC. This version is supplied as a three-pole withdrawable moving part (W MP) and incorporates four auxiliary contacts together with open/closed circuit-breaker position indication, making it particularly suitable for maintainable switchgear and main distribution applications.
Key Advantages
- Heavy-duty 2000 A air circuit breaker moving part for high-current power distribution.
- 65 kA ultimate short-circuit breaking capacity at 400–415 V AC.
- Advanced PR123/P-LSIG electronic overcurrent release.
- Comprehensive LSIG protection against overload, short-time, instantaneous and earth-fault conditions.
- Three-pole withdrawable design supports convenient inspection, servicing and replacement.
- Four auxiliary contacts support status signalling and integration with control systems.
- Part of the proven ABB SACE Emax E2N air circuit breaker platform.
Key Features
- ABB SACE Emax E2N 2000 series.
- 2000 A rated current.
- Three-pole configuration.
- Withdrawable moving-part execution.
- PR123/P-LSIG R2000 electronic trip unit.
- Long-time overload protection.
- Short-time delayed short-circuit protection.
- Instantaneous short-circuit protection.
- Integrated earth-fault protection.
- 65 kA Icu at 400–415 V AC.
- Four auxiliary contacts fitted.
- Open/closed circuit-breaker position indication.
Advanced Protection for High-Current Power Distribution
Air circuit breakers such as the ABB SACE Emax E2N provide switching, isolation and protection for high-current low-voltage distribution circuits. The E2N 2000 combines substantial continuous-current capability with high short-circuit breaking performance, making it well suited to main switchboards, industrial distribution systems and other installations where reliable interruption of significant fault currents is essential.
The PR123/P-LSIG electronic trip unit provides comprehensive protection by monitoring the electrical circuit for long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault conditions. Combined with the withdrawable SACE Emax construction, the 1SDA055943R1 delivers advanced protection while allowing the moving portion to be removed from compatible switchgear for inspection and maintenance.
Typical Applications
- Main low-voltage electrical distribution switchboards.
- Industrial power distribution systems.
- Transformer protection and distribution.
- Generator and utility distribution systems.
- Manufacturing and process plant switchgear.
- Commercial and infrastructure power distribution.
- Critical electrical installations requiring withdrawable circuit breakers.
Technical Specifications
| Product family | SACE Emax |
|---|---|
| Series | E2N |
| ABB order code | 1SDA055943R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker moving part |
| Rated current | 2000 A |
| Number of poles | 3 |
| Execution | Withdrawable moving part (W MP) |
| Trip unit | PR123/P-LSIG R2000 |
| Protection functions | LSIG – long-time, short-time, instantaneous and earth-fault protection |
| Rated ultimate short-circuit breaking capacity (Icu) at 400–415 V AC | 65 kA |
| Earth-fault protection | Integrated |
| Auxiliary contacts | 4 |
| Position indication | Open / closed |
| EAN / GTIN | 8015644572839 |
| Weight | approx. 59 kg |
Frequently Asked Questions
What is the ABB 1SDA055943R1 used for?
The ABB 1SDA055943R1 is a 2000 A three-pole air circuit breaker moving part designed for switching and comprehensive protection in high-current low-voltage electrical distribution systems.
What is the current rating of the ABB E2N 2000 1SDA055943R1?
The circuit breaker has a rated current of 2000 A, making it suitable for demanding industrial, commercial and infrastructure power distribution applications.
What protection does the PR123/P-LSIG trip unit provide?
The PR123/P-LSIG electronic trip unit provides LSIG protection functions covering long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault conditions.
What is the short-circuit breaking capacity of the E2N 2000?
The E2N 2000 N-performance circuit breaker provides a rated ultimate short-circuit breaking capacity of 65 kA at 400–415 V AC.
Is the ABB 1SDA055943R1 fixed or withdrawable?
The ABB 1SDA055943R1 is the three-pole withdrawable moving part (W MP) of the SACE Emax E2N circuit breaker system and is intended for use with a compatible withdrawable fixed part.
Trusted for Industrial Power Distribution
ABB SACE Emax air circuit breakers are engineered to provide dependable switching, isolation and advanced electrical protection in demanding low-voltage power distribution systems, making the E2N 2000 a robust solution for industrial, commercial and infrastructure installations.
