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1SDA055920R1 ABB E2N 2000 PR121/P-LI 2000 A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA055920R1 E2N 2000 PR121/P-LI is a 2000 A three-pole fixed SACE Emax air circuit breaker with horizontal rear terminals and a PR121/P-LI R2000 electronic trip unit providing long-time overload and instantaneous short-circuit protection.
£10,761.41
Why Choose the ABB E2N 2000 PR121/P-LI Air Circuit Breaker?
The ABB E2N 2000 PR121/P-LI, order code 1SDA055920R1, is a high-current 2000 A three-pole fixed air circuit breaker from the ABB SACE Emax family. Designed for low-voltage power distribution, it provides dependable switching and electronic overcurrent protection for demanding industrial, commercial and infrastructure installations.
Its PR121/P-LI R2000 electronic overcurrent release provides long-time overload and instantaneous short-circuit protection. This LI configuration helps protect cables, busbars and connected equipment against sustained overload conditions and severe short-circuit currents.
The breaker combines a 2000 A rated current, three-pole fixed construction and horizontal rear terminals for permanent integration into compatible low-voltage switchboards. The E2N performance class is designed for applications requiring robust short-circuit performance and reliable high-current circuit protection.
Key Advantages
- High-current 2000 A air circuit breaker for demanding power distribution.
- PR121/P-LI electronic trip unit provides dependable electronic overcurrent protection.
- Combines long-time overload and instantaneous short-circuit protection.
- Three-pole fixed construction for permanent switchboard installation.
- Horizontal rear terminals support connection to compatible switchboard busbar systems.
- Part of the established ABB SACE Emax E2N air circuit breaker platform.
Key Features
- ABB SACE Emax E2N series.
- 2000 A rated current.
- Three-pole configuration.
- Fixed execution.
- Horizontal rear terminal arrangement.
- PR121/P-LI R2000 electronic overcurrent release.
- Long-time overload protection.
- Instantaneous short-circuit protection.
- Designed for high-current low-voltage power distribution.
Electronic LI Protection for High-Current Distribution
The ABB SACE Emax E2N platform is designed for switching and protecting high-current low-voltage distribution circuits. Electronic trip technology monitors current conditions and initiates breaker operation when configured protection thresholds are exceeded, helping safeguard conductors, busbars and connected electrical equipment against damaging overcurrents.
The PR121/P-LI release combines long-time overload protection with instantaneous short-circuit protection. This protection profile makes the 1SDA055920R1 a practical choice where straightforward electronic overcurrent protection is required without the short-time or earth-fault functions provided by LSI and LSIG configurations.
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 feeder and distribution circuit protection.
Technical Specifications
| Series | SACE Emax E2N |
|---|---|
| ABB order code | 1SDA055920R1 |
| ABB product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame / designation | E2N 2000 |
| Rated current | 2000 A |
| Number of poles | 3 |
| Execution | Fixed |
| Terminal arrangement | Horizontal rear terminals (HR) |
| Trip unit | PR121/P-LI R2000 |
| Trip unit type | Electronic |
| Protection functions | LI – long-time overload and instantaneous short-circuit protection |
| Application | Low-voltage power distribution |
Frequently Asked Questions
What is the ABB 1SDA055920R1 used for?
It is a 2000 A three-pole fixed air circuit breaker designed for switching and overcurrent protection in low-voltage power distribution systems.
What is the rated current of the ABB E2N 2000 PR121/P-LI?
The circuit breaker has a rated current of 2000 A.
What protection functions does the PR121/P-LI provide?
The PR121/P-LI R2000 electronic release provides long-time overload and instantaneous short-circuit protection.
Is the ABB 1SDA055920R1 fixed or withdrawable?
This model is a three-pole fixed air circuit breaker with horizontal rear terminals for permanent installation in a compatible low-voltage switchboard.
Does the PR121/P-LI include short-time or earth-fault protection?
No. The LI configuration provides long-time and instantaneous protection. ABB LSI configurations add short-time protection, while LSIG configurations additionally provide earth-fault protection.
Trusted ABB Power Distribution Technology
ABB SACE Emax air circuit breakers combine robust high-current switching with electronic protection technology for dependable operation in demanding industrial, commercial and infrastructure low-voltage distribution systems.
