Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA055842R1 ABB E2B 2000 PR121/P-LSIG 2000 A 3-Pole Withdrawable Air Circuit Breaker
ABB 1SDA055842R1 E2B 2000 PR121/P-LSIG is a 2000 A three-pole withdrawable SACE Emax air circuit breaker with a PR121/P-LSIG electronic trip unit providing long-time, short-time, instantaneous and earth-fault protection.
£12,483.47
Why Choose the ABB E2B 2000 PR121/P-LSIG Air Circuit Breaker?
The ABB E2B 2000 PR121/P-LSIG, order code 1SDA055842R1, is a robust 2000 A three-pole withdrawable air circuit breaker designed for switching and comprehensive protection in low-voltage power distribution systems. As part of the ABB SACE Emax series, it combines high-current switching capability with electronic protection for demanding industrial, commercial and infrastructure installations.
The PR121/P-LSIG electronic overcurrent release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. This LSIG configuration helps protect cables, busbars and connected equipment while supporting selective and coordinated protection across low-voltage distribution networks.
With a rated current of 2000 A, a three-pole configuration and withdrawable execution, the E2B 2000 is particularly suited to switchboards where maintainability and operational flexibility are important. The withdrawable design allows the breaker moving part to be isolated from its compatible fixed part, simplifying inspection, maintenance and replacement procedures.
Key Advantages
- Heavy-duty 2000 A air circuit breaker for low-voltage power distribution.
- PR121/P-LSIG electronic trip unit provides comprehensive LSIG protection.
- Includes long-time, short-time, instantaneous and earth-fault protection.
- Three-pole withdrawable construction supports convenient maintenance and servicing.
- Electronic protection supports selective coordination within distribution networks.
- ABB SACE Emax construction provides dependable switching for demanding high-current applications.
Key Features
- ABB SACE Emax E2B series.
- 2000 A rated current.
- Three-pole configuration.
- Withdrawable execution.
- PR121/P-LSIG R2000 electronic overcurrent release.
- Long-time overload protection.
- Short-time short-circuit protection.
- Instantaneous short-circuit protection.
- Earth-fault protection.
- Designed for high-current low-voltage switchboards.
- Suitable for coordinated industrial power distribution protection.
Comprehensive Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB SACE Emax E2B provide high-current switching and protection for low-voltage distribution networks. The electronic trip release monitors current conditions and initiates breaker operation when configured protection thresholds are exceeded, helping reduce the risk of damage caused by overloads, short circuits and earth faults.
The PR121/P-LSIG release combines four principal protection functions in one electronic unit. Together with the E2B 2000's withdrawable construction, this makes the 1SDA055842R1 suitable for critical distribution applications requiring comprehensive circuit protection, selective coordination and convenient access for servicing.
Typical Applications
- Industrial low-voltage switchboards.
- Main power distribution panels.
- Manufacturing and process plants.
- Commercial and infrastructure electrical distribution.
- Transformer secondary distribution systems.
- High-current feeders requiring earth-fault protection.
Technical Specifications
| Series | SACE Emax E2B |
|---|---|
| ABB order code | 1SDA055842R1 |
| ABB product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Rated current | 2000 A |
| Number of poles | 3 |
| Execution | Withdrawable |
| Trip unit | PR121/P-LSIG R2000 |
| Protection functions | LSIG – long-time, short-time, instantaneous and earth-fault protection |
| Series performance class | E2B |
| Application | Low-voltage power distribution |
Frequently Asked Questions
What is the ABB 1SDA055842R1 used for?
It is a 2000 A three-pole air circuit breaker designed for switching and comprehensive overcurrent and earth-fault protection in low-voltage power distribution systems.
What is the rated current of the ABB E2B 2000 PR121/P-LSIG?
The circuit breaker has a rated current of 2000 A.
What protection functions does the PR121/P-LSIG provide?
The PR121/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.
How many poles does the ABB 1SDA055842R1 have?
The 1SDA055842R1 is a three-pole E2B 2000 air circuit breaker.
Is the ABB 1SDA055842R1 fixed or withdrawable?
This model has a withdrawable execution and is designed for use with the appropriate ABB SACE Emax fixed part.
Trusted ABB Power Distribution Technology
ABB SACE Emax air circuit breakers are engineered for dependable high-current switching and comprehensive protection in demanding low-voltage power distribution systems, combining electronic protection with robust and serviceable breaker construction.
