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1SDA057537R1 ABB E3S-A 2500 PR121/P-LSIG 2500A 3P Air Circuit Breaker
ABB 1SDA057537R1 E3S-A 2500 PR121/P-LSIG is a 2500 A three-pole SACE Emax air circuit breaker with long-time, short-time, instantaneous and earth-fault electronic protection for demanding low-voltage power distribution systems.
£14,960.06
Why Choose the ABB E3S-A 2500 PR121/P-LSIG 2500A 3P Air Circuit Breaker?
The ABB E3S-A 2500 PR121/P-LSIG, order code 1SDA057537R1, is a high-current SACE Emax air circuit breaker designed for dependable switching and protection in demanding low-voltage power distribution systems. This E3S-A model has a rated current of 2500 A, three-pole construction and ABB's PR121/P-LSIG electronic overcurrent release.
The PR121/P-LSIG trip unit provides long-time, short-time, instantaneous and earth-fault protection. These LSIG functions help protect cables, busbars, switchgear and connected equipment against overloads, short circuits and earth faults while supporting coordinated protection throughout the electrical distribution system.
As part of the ABB SACE Emax family, the E3S-A combines robust air circuit breaker construction with electronic protection for high-current applications. Its 2500 A current rating and three-pole configuration make it suitable for substantial three-phase distribution circuits such as main incomers, high-current feeders and bus-coupler positions.
Key Advantages
- High-current 2500 A SACE Emax air circuit breaker for demanding low-voltage distribution.
- Three-pole configuration suitable for three-phase electrical systems.
- PR121/P-LSIG electronic trip unit provides comprehensive overcurrent and earth-fault protection.
- LSIG functions cover long-time, short-time, instantaneous and earth-fault protection requirements.
- E3S-A performance level suited to demanding power distribution duties.
- Suitable for protection of main incomers, high-current feeders and bus-coupler circuits.
Key Features
- ABB SACE Emax E3S-A series.
- 2500 A rated current.
- Three-pole construction.
- PR121/P-LSIG electronic overcurrent release.
- Long-time overload protection.
- Short-time short-circuit protection.
- Instantaneous short-circuit protection.
- Earth-fault protection.
- Electronic protection suitable for coordinated distribution systems.
- Designed for high-current low-voltage AC power distribution.
Advanced Protection for High-Current Power Distribution
Air circuit breakers such as the ABB SACE Emax E3S-A provide controlled switching and protection for high-current low-voltage distribution circuits. The electronic trip unit monitors circuit conditions and initiates tripping when configured protection thresholds are exceeded, helping limit damage caused by overloads, short circuits and earth faults.
The PR121/P-LSIG release combines four key protection functions in one electronic trip unit. Together with the robust E3S-A platform, this makes 1SDA057537R1 suitable for important distribution points where dependable fault interruption, protection coordination and continuity of electrical service are required.
Typical Applications
- Low-voltage power distribution switchboards.
- Industrial electrical distribution systems.
- Main incoming circuit protection.
- High-current feeder protection.
- Bus-coupler and distribution circuit protection.
- Commercial and infrastructure power systems.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA057537R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame | E3 |
| Performance level | S-A |
| Rated current (In) | 2500 A |
| Number of poles | 3 |
| Current type | AC |
| Trip unit | PR121/P-LSIG |
| Release type | Electronic |
| Protection functions | Long-time, short-time, instantaneous and earth-fault (LSIG) |
| Application | Low-voltage power distribution |
Frequently Asked Questions
What is the ABB 1SDA057537R1 used for?
It is a 2500 A three-pole SACE Emax air circuit breaker designed for switching and protecting high-current low-voltage electrical distribution systems.
What trip unit is fitted to the ABB E3S-A 2500?
This model is fitted with the ABB PR121/P-LSIG electronic overcurrent release, providing comprehensive LSIG circuit protection.
What is the rated current of ABB 1SDA057537R1?
The ABB E3S-A circuit breaker has a rated current of 2500 A.
How many poles does the ABB E3S-A 2500 have?
The 1SDA057537R1 has a three-pole configuration suitable for three-phase low-voltage electrical distribution systems.
What protection functions does the PR121/P-LSIG provide?
The PR121/P-LSIG provides long-time, short-time, instantaneous and earth-fault protection, collectively identified as LSIG protection.
Trusted by Power Distribution Professionals Worldwide
ABB SACE Emax air circuit breakers are engineered for dependable switching and protection in demanding low-voltage power distribution systems, combining robust construction with electronic trip technology for accurate and coordinated circuit protection.
