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1SDA056761R1 ABB E3L2500 PR121/P-LSI 2500A 4-Pole Fixed Air Circuit Breaker
ABB 1SDA056761R1 E3L2500 PR121/P-LSI is a 2500 A four-pole fixed SACE Emax air circuit breaker with LSI electronic overcurrent protection and rear horizontal terminals for high-current low-voltage power distribution.
£21,873.11
Why Choose the ABB E3L2500 PR121/P-LSI 2500A Air Circuit Breaker?
The ABB E3L2500 PR121/P-LSI, order code 1SDA056761R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and protection in high-current low-voltage electrical distribution systems. Part of the proven ABB SACE Emax E3L series, this four-pole fixed circuit breaker combines a 2500 A rated current with the PR121/P-LSI electronic overcurrent release.
The PR121/P-LSI electronic trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. These LSI protection functions help safeguard switchboards, busbars, cables and connected equipment while supporting selective and coordinated protection in demanding industrial power distribution networks.
The E3L2500 PR121/P-LSI is supplied in a four-pole fixed configuration with rear horizontal main terminals. Its four-pole arrangement enables switching and protection of three phase conductors together with the neutral conductor, making it suitable for high-capacity four-wire distribution systems and major low-voltage switchboards.
Key Advantages
- High-performance ABB SACE Emax air circuit breaker for industrial power distribution.
- 2500 A rated current for high-current electrical systems.
- Four-pole construction for three-phase and neutral distribution circuits.
- PR121/P-LSI electronic overcurrent release for dependable circuit protection.
- LSI functions provide long-time, short-time and instantaneous overcurrent protection.
- Fixed construction for permanent switchboard installation.
- Rear horizontal terminals simplify integration with switchboard busbar systems.
Key Features
- ABB SACE Emax E3L series.
- 2500 A rated uninterrupted current.
- Four-pole fixed construction.
- PR121/P-LSI R2500 electronic trip unit.
- Long-time (L) overload protection.
- Short-time (S) short-circuit protection.
- Instantaneous (I) short-circuit protection.
- Rear horizontal main terminals.
- Designed for demanding low-voltage power distribution systems.
- Compatible with ABB SACE Emax switchboard accessories and control solutions.
Reliable Protection for High-Power Distribution Systems
Air circuit breakers such as the ABB SACE Emax E3L provide switching, isolation and overcurrent protection for high-current low-voltage distribution circuits. Their robust construction makes them suitable for main distribution duties where reliable interruption of electrical faults and protection of valuable downstream equipment are essential.
The PR121/P-LSI electronic release combines overload protection with short-time and instantaneous short-circuit functions. Together with the E3L2500 platform's high current rating and four-pole configuration, this provides a versatile protection solution for industrial plants, infrastructure facilities and large commercial electrical distribution systems.
Typical Applications
- Main incoming protection in low-voltage switchboards.
- Industrial power distribution systems.
- Transformer secondary protection.
- High-current feeder protection.
- Manufacturing and process plants.
- Large commercial and infrastructure electrical installations.
- Four-wire distribution systems requiring neutral switching.
Technical Specifications
| Series | SACE Emax E3L |
|---|---|
| ABB order code | 1SDA056761R1 |
| Product type | Air circuit breaker |
| Rated uninterrupted current | 2500 A |
| Number of poles | 4 |
| Execution | Fixed |
| Main terminals | Rear horizontal |
| Protection release | PR121/P-LSI R2500 |
| Protection functions | Long-time, short-time and instantaneous (LSI) |
| Current type | AC |
| Mechanical durability | 15,000 cycles |
Frequently Asked Questions
What is the ABB 1SDA056761R1 used for?
The ABB 1SDA056761R1 is a 2500 A four-pole fixed SACE Emax air circuit breaker designed for switching and protecting high-current low-voltage electrical distribution systems.
What protection functions does the PR121/P-LSI provide?
The PR121/P-LSI electronic release provides long-time overload, short-time short-circuit and instantaneous short-circuit protection, represented by the LSI designation.
What is the rated current of the ABB E3L2500 1SDA056761R1?
The circuit breaker has a rated uninterrupted current of 2500 A.
How many poles does the ABB 1SDA056761R1 have?
This E3L2500 circuit breaker has four poles, allowing switching and protection of three phase conductors together with the neutral conductor in suitable distribution systems.
Is the ABB 1SDA056761R1 fixed or withdrawable?
The 1SDA056761R1 is a fixed circuit breaker with rear horizontal main terminals for permanent installation in low-voltage switchboards.
Trusted Protection for Industrial Power Distribution
ABB SACE Emax air circuit breakers are engineered for dependable high-current switching and electronic overcurrent protection, supporting safe and reliable operation in demanding industrial, commercial and infrastructure power distribution systems.
