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1SDA056721R1 ABB E3L 2000 PR121/P-LSI 2000A 3P Fixed Air Circuit Breaker
ABB 1SDA056721R1 E3L 2000 PR121/P-LSI is a 2000 A three-pole fixed SACE Emax air circuit breaker with rear horizontal terminals and a PR121/P-LSI R2000 electronic overcurrent release for demanding low-voltage power distribution systems.
£13,832.76
Why Choose the ABB E3L 2000 PR121/P-LSI Air Circuit Breaker?
The ABB E3L 2000 PR121/P-LSI, order code 1SDA056721R1, is a high-performance fixed air circuit breaker (ACB) designed for demanding low-voltage power distribution systems. Part of the ABB SACE Emax E3L series, this three-pole breaker combines a 2000 A rated current with the PR121/P-LSI R2000 electronic overcurrent release.
The PR121/P-LSI release provides long-time, short-time and instantaneous protection functions, helping protect electrical installations against sustained overloads and short-circuit faults. The E3L performance class is intended for applications requiring particularly high short-circuit interruption capability and dependable selective protection.
This model is supplied in a 3-pole fixed configuration with rear horizontal terminals, making it suitable for permanent installation within compatible low-voltage switchboards. Four auxiliary contacts and open/closed position indication support integration with signalling, monitoring and control systems.
Key Advantages
- High-performance ABB SACE Emax E3L air circuit breaker for demanding power distribution.
- 2000 A rated current for high-current industrial and infrastructure applications.
- PR121/P-LSI R2000 electronic release with long-time, short-time and instantaneous protection.
- 3-pole fixed construction for permanent switchboard installations.
- Rear horizontal terminals facilitate integration with suitable switchboard busbar arrangements.
- Four auxiliary contacts and open/closed position indication support remote status monitoring.
Key Features
- ABB SACE Emax E3L air circuit breaker.
- 2000 A rated current.
- 3-pole configuration.
- PR121/P-LSI R2000 electronic overcurrent release.
- LSI protection: long-time, short-time and instantaneous.
- Fixed (F) breaker construction.
- Rear horizontal (HR) terminals.
- High short-circuit performance for demanding low-voltage installations.
- Four auxiliary contacts for signalling and control.
- Open/closed position indication for breaker status monitoring.
Reliable LSI Protection for Demanding Power Distribution
The ABB E3L 2000 combines a substantial 2000 A current rating with PR121/P electronic protection. Long-time protection helps safeguard circuits against sustained overload conditions, short-time protection supports selective response to short-circuit faults, and instantaneous protection provides rapid interruption of severe fault currents.
Its fixed SACE Emax construction is designed for permanent installation within compatible low-voltage switchboards. Rear horizontal terminals provide a practical connection arrangement for busbar systems, while the E3L performance class makes the breaker particularly suitable for installations where high fault levels and dependable circuit protection are key design requirements.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial three-phase power distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Transformer and generator distribution systems.
- Power control centres and fixed switchgear assemblies.
Technical Specifications
| Series | SACE Emax E3L |
|---|---|
| Order code | 1SDA056721R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Rated current (In) | 2000 A |
| Number of poles | 3P |
| Release | PR121/P-LSI R2000 |
| Release type | Electronic overcurrent release |
| Protection functions | LSI – long-time, short-time and instantaneous |
| Integrated earth-fault protection | No |
| Version | Fixed |
| Terminal arrangement | Rear horizontal (HR) |
| Auxiliary contacts | 4 |
| Position indication | Open / closed |
| EAN | 8015644580612 |
| Net weight | 72 kg |
Frequently Asked Questions
What is the ABB 1SDA056721R1 used for?
It is a 2000 A three-pole fixed air circuit breaker designed for switching and protecting demanding low-voltage electrical distribution systems against overload and short-circuit conditions.
What protection release does the ABB 1SDA056721R1 use?
The breaker uses an ABB PR121/P-LSI R2000 electronic overcurrent release, providing long-time, short-time and instantaneous protection functions.
Is the ABB 1SDA056721R1 fixed or withdrawable?
The 1SDA056721R1 is a fixed-version ABB SACE Emax E3L air circuit breaker with rear horizontal terminals.
What terminal arrangement does the ABB 1SDA056721R1 use?
The breaker is equipped with rear horizontal (HR) terminals, providing a suitable connection arrangement for compatible switchboard busbar systems.
Does the ABB 1SDA056721R1 include auxiliary contacts?
Yes. The breaker is fitted with four auxiliary contacts and provides open/closed circuit-breaker position indication for signalling and monitoring.
Trusted ABB Power Distribution Protection
ABB SACE Emax air circuit breakers provide robust switching and electronic protection for demanding low-voltage distribution systems, combining high-current capability, advanced overcurrent protection and practical switchboard integration.
