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1SDA056781R1 ABB E3L2500 PR122/P-LSIG 2500 A 4-Pole Withdrawable Air Circuit Breaker
ABB 1SDA056781R1 E3L2500 is a 2500 A four-pole withdrawable SACE Emax air circuit breaker moving part with a PR122/P-LSIG R2500 electronic release providing long-time, short-time, instantaneous and earth-fault protection.
£24,464.72
Why Choose the ABB E3L2500 PR122/P-LSIG Air Circuit Breaker?
The ABB E3L2500 PR122/P-LSIG, order code 1SDA056781R1, is a high-performance SACE Emax air circuit breaker moving part designed for switching and comprehensive protection in demanding low-voltage power-distribution systems. Part of the ABB SACE Emax E3 series, this four-pole withdrawable configuration combines a 2500 A rated current with the advanced PR122/P-LSIG R2500 electronic overcurrent release.
The PR122/P-LSIG release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. These LSIG functions provide comprehensive protection against sustained overloads, short circuits and earth faults while supporting selective coordination across complex industrial and infrastructure power-distribution networks.
This model is the four-pole withdrawable moving part of the E3L2500 circuit breaker and is designed for use with the corresponding ABB SACE Emax fixed part. It incorporates four auxiliary contacts with open/closed circuit-breaker position indication and combines high fault-interruption capability with service-friendly withdrawable construction.
Key Advantages
- High-current 2500 A SACE Emax air circuit breaker moving part.
- PR122/P-LSIG R2500 electronic release provides comprehensive LSIG protection.
- Long-time, short-time, instantaneous and earth-fault protection covers a broad range of electrical fault conditions.
- Four-pole configuration supports three-phase distribution systems requiring neutral switching.
- Withdrawable construction facilitates inspection, maintenance and servicing within compatible switchgear.
- 130 kA ultimate short-circuit breaking capacity at 400 V AC supports high-fault-level installations.
- Four auxiliary contacts and open/closed indication support switchboard monitoring and control.
Key Features
- ABB SACE Emax E3L2500 air circuit breaker moving part.
- 2500 A rated uninterrupted current.
- Four-pole withdrawable version.
- PR122/P-LSIG R2500 electronic overcurrent release.
- L protection: long-time overload protection.
- S protection: short-time short-circuit protection.
- I protection: instantaneous short-circuit protection.
- G protection: integrated earth-fault protection.
- IP20 protection rating.
- Four auxiliary contacts: 2 NO + 2 NC.
- Integrated circuit-breaker open/closed position indication.
- Pushbutton operating element.
- Optional motor operator for powered operation.
Reliable LSIG Protection for High-Current Power Distribution
The ABB SACE Emax E3L2500 is designed for switching and protection at main incomer and feeder levels within substantial low-voltage distribution systems. Its PR122/P-LSIG electronic release provides long-time protection against sustained overloads, short-time protection for coordinated fault clearing, instantaneous intervention against severe short circuits and integrated earth-fault protection.
The combination of a 2500 A current rating, four-pole construction and comprehensive LSIG protection makes the 1SDA056781R1 particularly suitable for high-capacity switchboards where electrical performance and serviceability are both important. When installed with the corresponding fixed part, the moving circuit breaker can be withdrawn for inspection and maintenance, helping simplify servicing within critical power-distribution assemblies.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power-distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Transformer secondary and main incomer protection.
- High-current feeder and earth-fault protection.
- Withdrawable switchgear and power-distribution assemblies.
Technical Specifications
| Product group | New Emax |
|---|---|
| Series | SACE Emax E3 |
| ABB order code | 1SDA056781R1 |
| Extended product type | E3L2500PR122/P-LSIGIn=2500A4pWMP |
| Product type | Air circuit breaker moving part |
| Frame | E3 |
| Performance level | L |
| Rated current (In) | 2500 A |
| Rated uninterrupted current (Iu) | 2500 A |
| Number of poles | 4P |
| Release | PR122/P-LSIG R2500 |
| Release type | Electronic overcurrent release |
| Protection functions | LSIG — long-time, short-time, instantaneous and earth-fault |
| Overload release adjustment range | 400–2500 A |
| Short-time short-circuit release adjustment range | 1500–25,000 A |
| Instantaneous short-circuit release adjustment range | 3750–37,500 A |
| Integrated earth-fault protection | Yes |
| Version | Withdrawable moving part |
| Main circuit connection | Busbar connection |
| Protection rating | IP20 |
| Rated ultimate short-circuit breaking capacity at 400 V, 50 Hz | 130 kA |
| Auxiliary contacts | 4 |
| Normally open auxiliary contacts | 2 |
| Normally closed auxiliary contacts | 2 |
| Position indication | Open / closed |
| Operating element | Pushbutton |
| Motor operator | Optional |
| Product net weight | 96 kg |
| EAN | 8015644581213 |
| HS code | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA056781R1 used for?
The ABB 1SDA056781R1 is a 2500 A four-pole SACE Emax air circuit breaker moving part designed for switching and comprehensive overcurrent and earth-fault protection in high-current low-voltage power-distribution systems.
What protection release is fitted to the ABB E3L2500?
This circuit breaker is fitted with the ABB PR122/P-LSIG R2500 electronic overcurrent release, providing long-time, short-time, instantaneous and earth-fault protection.
What is the rated current of the ABB E3L2500 PR122/P-LSIG?
The circuit breaker has a rated uninterrupted current of 2500 A.
Is the ABB 1SDA056781R1 fixed or withdrawable?
The 1SDA056781R1 is a four-pole withdrawable moving part designed for use with the corresponding ABB SACE Emax fixed part.
What does LSIG mean on the PR122/P release?
LSIG denotes long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection, providing comprehensive electronic protection against a range of electrical fault conditions.
Trusted Protection for Industrial Power Systems
ABB SACE Emax air circuit breakers provide dependable switching and electronic protection for demanding low-voltage distribution systems, combining high current capability, comprehensive LSIG protection and service-friendly withdrawable construction.
