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1SDA056052R1 ABB E2L1250 PR122/P-LSI 1250 A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA056052R1 is a SACE Emax E2L1250 three-pole fixed air circuit breaker rated at 1250 A with a PR122/P-LSI electronic release providing long-time, short-time and instantaneous protection for low-voltage power distribution systems.
£8,713.49
Why Choose the ABB E2L1250 PR122/P-LSI 1SDA056052R1 Air Circuit Breaker?
The ABB 1SDA056052R1 is a high-performance SACE Emax E2L1250 air circuit breaker designed for reliable switching and protection in demanding low-voltage electrical distribution systems. As part of the ABB New Emax product range, this three-pole fixed circuit breaker has a rated current of 1250 A and incorporates the PR122/P-LSI electronic overcurrent release.
The PR122/P-LSI trip unit provides long-time, short-time and instantaneous overcurrent protection. This combination protects against sustained overloads and short-circuit faults while allowing short-time protection to support selective coordination between protective devices in appropriately engineered electrical distribution systems.
With its 1250 A rating, three-pole configuration and fixed construction, the E2L1250 is suited to high-current switchboards, incoming supplies and distribution feeders. The E2L performance class is designed for installations requiring high fault-interruption performance, while the PR122/P platform provides advanced electronic protection suitable for demanding industrial, commercial and infrastructure applications.
Key Advantages
- Heavy-duty ABB SACE Emax air circuit breaker for low-voltage power distribution.
- 1250 A rated current for high-current electrical systems.
- PR122/P-LSI electronic release provides comprehensive three-stage overcurrent protection.
- LSI functionality provides long-time, short-time and instantaneous protection.
- Three-pole configuration suitable for three-phase distribution circuits.
- E2L performance class designed for high short-circuit interruption capability.
- Fixed construction for permanent integration into compatible switchboard assemblies.
Key Features
- ABB SACE Emax E2L1250 air circuit breaker.
- 1250 A rated current.
- Three-pole configuration.
- PR122/P-LSI electronic overcurrent release.
- L protection: long-time overload protection.
- S protection: short-time short-circuit protection.
- I protection: instantaneous short-circuit protection.
- Fixed F version for switchboard installation.
- E2 frame with L performance level.
- Part of the ABB New Emax / SACE Emax low-voltage air circuit breaker range.
Advanced Protection for Low-Voltage Distribution Systems
Air circuit breakers such as the ABB SACE Emax E2L1250 provide switching and protection for high-current low-voltage distribution circuits. The E2L performance class is intended for installations with demanding prospective fault levels, helping protect switchboards, conductors, transformers and connected electrical equipment against potentially damaging overcurrent conditions.
The PR122/P-LSI electronic release combines long-time overload protection with short-time and instantaneous short-circuit protection. The short-time protection function can support selective coordination with downstream protective devices, while instantaneous protection provides rapid operation during severe faults. Together with the fixed three-pole E2L1250 platform, these functions make the 1SDA056052R1 suitable for demanding main and feeder protection applications.
Typical Applications
- Industrial low-voltage switchboards.
- Main electrical distribution panels.
- Incoming mains protection.
- High-current feeder protection.
- Manufacturing and process industry electrical systems.
- Commercial and infrastructure power distribution.
- Transformer secondary-side protection.
- High-current three-phase distribution circuits.
Technical Specifications
| Product group | 310513-New Emax |
|---|---|
| Series | SACE Emax |
| Order code / MPN | 1SDA056052R1 |
| Product type | Air circuit breaker |
| Frame / sub-type | E2 |
| Performance level | L |
| Rated current (In) | 1250 A |
| Number of poles | 3 |
| Release | PR122/P-LSI |
| Release type | Electronic |
| Protection functions | LSI |
| Long-time protection (L) | Overload protection |
| Short-time protection (S) | Short-circuit protection with time-delay functionality |
| Instantaneous protection (I) | Instantaneous short-circuit protection |
| Version | Fixed |
| Mounting configuration | Fixed circuit breaker |
| Application | Low-voltage power distribution |
| Product family | New Emax |
Frequently Asked Questions
What is the ABB 1SDA056052R1 used for?
The ABB 1SDA056052R1 is an E2L1250 SACE Emax air circuit breaker designed for switching and protecting high-current low-voltage electrical distribution circuits.
What is the current rating of the ABB E2L1250 1SDA056052R1?
The circuit breaker has a rated current of 1250 A.
What protection does the PR122/P-LSI release provide?
The PR122/P-LSI electronic release provides long-time overload protection, short-time short-circuit protection and instantaneous short-circuit protection.
What does LSI mean on the ABB PR122/P trip unit?
LSI denotes long-time (L), short-time (S) and instantaneous (I) protection functions, providing multiple stages of overcurrent and short-circuit protection.
Is the ABB 1SDA056052R1 fixed or withdrawable?
The 1SDA056052R1 is a three-pole fixed air circuit breaker intended for permanent installation in a compatible low-voltage switchboard assembly.
Trusted ABB Power Distribution Technology
ABB SACE Emax air circuit breakers are engineered for dependable switching and protection in demanding low-voltage power distribution systems, combining electronic protection, high fault-interruption performance and robust construction for industrial electrical installations.
