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1SDA057421R1 ABB E3N-A 2500 PR122/P-LSIG 2500A 3P Air Circuit Breaker
ABB 1SDA057421R1 E3N-A 2500 PR122/P-LSIG is a 2500 A three-pole SACE Emax air circuit breaker with long-time, short-time, instantaneous and ground-fault electronic protection for high-current low-voltage distribution systems.
£14,703.30
Why Choose the ABB E3N-A 2500 PR122/P-LSIG 2500A 3P Air Circuit Breaker?
The ABB E3N-A 2500 PR122/P-LSIG, order code 1SDA057421R1, is a high-current SACE Emax air circuit breaker (ACB) designed for protection, switching and isolation in demanding low-voltage power distribution systems. Built on the ABB E3N-A platform, this three-pole breaker has a rated current of 2500 A and is suited to major industrial, commercial and infrastructure distribution circuits.
The breaker is equipped with an ABB PR122/P-LSIG electronic overcurrent release. Its LSIG protection functions provide long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection, helping safeguard cables, busbars, switchgear and connected equipment against a broad range of electrical fault conditions.
With its three-pole configuration, 2500 A rated current and N performance level, the E3N-A 2500 PR122/P-LSIG provides comprehensive electronic protection for high-capacity distribution networks. It is particularly suited to main incomers, major feeders and power distribution circuits where coordinated overcurrent and ground-fault protection are required.
Key Advantages
- High-capacity 2500 A SACE Emax air circuit breaker for major distribution circuits.
- Three-pole configuration for three-phase low-voltage systems.
- Advanced PR122/P-LSIG electronic overcurrent release.
- LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
- Short-time protection supports coordination with downstream protective devices.
- Ground-fault protection extends protection beyond conventional overload and short-circuit functions.
- N performance level for demanding power distribution applications.
- Suitable for main incomers, high-current feeders and critical distribution circuits.
Key Features
- ABB SACE Emax E3N-A air circuit breaker.
- 2500 A rated current.
- Three-pole (3P) configuration.
- PR122/P-LSIG electronic protection release.
- Long-time (L) overload protection.
- Short-time (S) short-circuit protection.
- Instantaneous (I) short-circuit protection.
- Ground-fault (G) protection.
- N performance level.
- Electronic overcurrent protection for high-current distribution circuits.
- Supports coordinated protection strategies in complex electrical networks.
- Designed for demanding industrial and commercial low-voltage distribution systems.
Advanced LSIG Protection for 2500A Power Distribution
The ABB SACE Emax E3N-A provides switching, isolation and electronic overcurrent protection for major low-voltage distribution circuits. The PR122/P-LSIG release monitors circuit conditions and provides dedicated responses to sustained overloads, short-time and instantaneous short circuits, and ground faults, helping protect critical electrical infrastructure and connected equipment.
The combination of 2500 A current capacity and LSIG electronic protection makes the 1SDA057421R1 well suited to high-capacity distribution systems where protection coordination is important. Short-time protection can support selective operation between upstream and downstream devices, while ground-fault protection provides additional safeguarding against earth-fault conditions.
Typical Applications
- Industrial low-voltage switchboards.
- Main incomer circuit protection.
- High-current distribution feeders.
- Manufacturing and process plants.
- Commercial building power distribution.
- Infrastructure electrical systems.
- Transformer secondary distribution.
- Power distribution centres and major switchgear assemblies.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA057421R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker (ACB) |
| Frame / size | E3 |
| Performance level | N |
| Rated current (In) | 2500 A |
| Number of poles | 3P |
| Trip unit | PR122/P-LSIG electronic release |
| Protection functions | Long-time (L), short-time (S), instantaneous (I), ground fault (G) |
| Current type | AC |
Frequently Asked Questions
What is the ABB 1SDA057421R1 used for?
The ABB 1SDA057421R1 is a 2500 A three-pole SACE Emax air circuit breaker designed for protection, switching and isolation of high-current low-voltage power distribution circuits.
What trip unit is fitted to the ABB E3N-A 2500?
This circuit breaker is equipped with an ABB PR122/P-LSIG electronic release providing comprehensive electronic overcurrent and ground-fault protection.
What protection functions does PR122/P-LSIG provide?
The PR122/P-LSIG provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection.
What is the rated current of the ABB 1SDA057421R1?
The ABB E3N-A circuit breaker has a rated current of 2500 A and a three-pole configuration.
Where is the ABB E3N-A 2500 PR122/P-LSIG typically used?
The breaker is suited to main incomers, high-current feeders, industrial switchboards, transformer secondary distribution and power distribution centres requiring comprehensive LSIG electronic protection.
Trusted High-Current Protection from ABB
ABB SACE Emax air circuit breakers combine robust power switching with comprehensive electronic overcurrent and ground-fault protection for critical low-voltage distribution systems.
