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1SDA055839R1 ABB E2B2000 PR123/P-LSIG 2000 A 4-Pole Fixed Air Circuit Breaker
ABB 1SDA055839R1 is a SACE New Emax E2B2000 four-pole 2000 A fixed air circuit breaker with rear horizontal terminals and a PR123/P-LSIG R2000 electronic release providing long-time, short-time, instantaneous and earth-fault protection.
£19,727.83
Why Choose the ABB E2B2000 1SDA055839R1 Air Circuit Breaker?
The ABB E2B2000 1SDA055839R1 is a high-performance SACE Emax air circuit breaker (ACB) designed for protection and switching in low-voltage electrical distribution systems. Part of the established ABB New Emax series, this E2B 2000 configuration features a four-pole fixed design, a rated current of 2000 A and an advanced PR123/P-LSIG electronic overcurrent release.
Designed for demanding industrial, commercial and infrastructure power distribution applications, the E2B2000 combines dependable circuit protection with advanced electronic trip functionality. The PR123/P-LSIG release provides long-time, short-time, instantaneous and earth-fault protection, helping protect electrical installations against overload, short-circuit and earth-fault conditions.
This version is a fixed four-pole circuit breaker with rear horizontal terminals and combines a 2000 A rated current with a rated operational voltage of up to 690 V AC. Its E2B performance level provides a rated ultimate short-circuit breaking capacity of 42 kA, while four auxiliary change-over contacts and open/closed position indication support integration into switchgear control and signalling systems.
Key Advantages
- Robust ABB SACE Emax air circuit breaker for demanding low-voltage power distribution.
- 2000 A rated current for high-current electrical installations.
- Four-pole fixed configuration suitable for four-conductor distribution systems.
- Advanced PR123/P-LSIG electronic trip unit providing comprehensive circuit protection.
- Integrated long-time, short-time, instantaneous and earth-fault protection functions.
- 42 kA ultimate and service short-circuit breaking capacity throughout its rated AC operational voltage range.
Key Features
- ABB SACE New Emax E2B 2000 circuit breaker platform.
- 2000 A rated current.
- Four-pole construction.
- Fixed circuit breaker configuration.
- Rear horizontal terminals.
- PR123/P-LSIG electronic overcurrent release.
- R2000 release rating.
- 690 V AC rated operational voltage.
- 42 kA rated ultimate short-circuit breaking capacity.
- Four auxiliary change-over contacts and circuit breaker open/closed position indication.
Advanced Protection for High-Current Power Distribution
Air circuit breakers such as the ABB SACE Emax E2B2000 provide switching and protection for high-current low-voltage distribution circuits. Electronic trip technology enables accurate detection of abnormal current conditions, allowing the breaker to disconnect the protected circuit when configured protection thresholds are exceeded.
The PR123/P-LSIG release provides L, S, I and G protection functions, covering long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. Combined with the fixed Emax architecture and rear horizontal terminals, this configuration is well suited to switchboards requiring comprehensive protection, high breaking performance and dependable operation.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Commercial and infrastructure electrical distribution.
- Manufacturing and process plant switchgear.
- Incoming and outgoing high-current feeder protection.
- Four-pole distribution systems requiring integrated earth-fault protection.
Technical Specifications
| Series | SACE New Emax |
|---|---|
| ABB order code | 1SDA055839R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame | E2B 2000 |
| Rated current | 2000 A |
| Rated uninterrupted current | 2000 A |
| Rated operational current | 2000 A |
| Rated operational voltage | up to 690 V AC |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 12 kV |
| Number of poles | 4 |
| Execution | Fixed |
| Terminal connection | Rear horizontal |
| Trip unit | PR123/P-LSIG |
| Release type | Electronic |
| Release rating | R2000 / 2000 A |
| Protection functions | L (long-time), S (short-time), I (instantaneous) and G (earth fault) |
| Overload release setting range | 800–2000 A |
| Instantaneous short-circuit release setting range | 3000–30000 A |
| Rated ultimate short-circuit breaking capacity | 42 kA |
| Rated service short-circuit breaking capacity | 42 kA |
| Rated short-time withstand current | 42 kA for 1 s / 3 s |
| Integrated earth-fault protection | Yes |
| Short-circuit performance level | B |
| Power loss | 180 W |
| Auxiliary contacts | 4 change-over contacts |
| Position indication | Open / closed |
| Motor drive | Optional |
| Standard | IEC |
| EAN | 8015644571795 |
| Weight | approx. 68 kg |
Frequently Asked Questions
What is the ABB E2B2000 1SDA055839R1 used for?
The ABB 1SDA055839R1 is a SACE Emax E2B 2000 air circuit breaker designed for switching and comprehensive overcurrent protection in high-current low-voltage electrical distribution systems.
What is the rated current of the ABB E2B2000 1SDA055839R1?
This circuit breaker has a rated current of 2000 A, with an overload release setting range of 800–2000 A.
Which trip unit is fitted to the ABB 1SDA055839R1?
The breaker is fitted with an ABB PR123/P-LSIG R2000 electronic overcurrent release, providing long-time, short-time, instantaneous and earth-fault protection.
What does LSIG protection mean on the PR123/P trip unit?
LSIG denotes long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection, providing comprehensive protection for the connected low-voltage distribution system.
Is the ABB 1SDA055839R1 fixed or withdrawable?
The 1SDA055839R1 is a fixed four-pole E2B 2000 circuit breaker equipped with rear horizontal terminals for integration into compatible low-voltage switchgear.
Trusted Protection from ABB
ABB SACE Emax air circuit breakers are engineered for dependable protection and switching in demanding low-voltage power distribution installations, combining advanced electronic protection technology with robust switchgear integration.
