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1SDA056287R1 ABB E3S 2500 PR123/P-LSIG 2500A 4P Fixed Air Circuit Breaker
ABB 1SDA056287R1 E3S 2500 four-pole fixed air circuit breaker rated at 2500 A with rear horizontal terminals and a PR123/P-LSIG electronic trip unit providing LSIG protection for high-current low-voltage distribution systems.
£24,369.23
Why Choose the ABB E3S 2500 PR123/P-LSIG 2500A 4P Fixed Air Circuit Breaker?
The ABB 1SDA056287R1 is a high-performance SACE Emax E3S air circuit breaker designed for switching and protection in demanding low-voltage power distribution systems. Rated at 2500 A, this four-pole fixed circuit breaker incorporates ABB's advanced PR123/P-LSIG electronic overcurrent release, providing comprehensive protection for industrial, commercial and infrastructure electrical networks.
Part of the proven ABB SACE Emax E3 series, the E3S 2500 combines high current capacity with strong short-circuit performance. The S performance level provides a rated ultimate and service short-circuit breaking capacity of 75 kA across specified AC voltages up to 690 V AC, making the breaker suitable for demanding main distribution and high-fault-level applications.
The PR123/P-LSIG electronic release provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. This version features a four-pole fixed configuration with horizontal rear terminals, providing a robust permanent installation arrangement for compatible low-voltage switchboards.
Key Advantages
- High-current 2500 A SACE Emax air circuit breaker for demanding power distribution.
- Four-pole configuration for comprehensive switching and protection.
- Advanced PR123/P-LSIG electronic trip unit with overload, short-circuit and earth-fault protection.
- 75 kA ultimate and service short-circuit breaking capacity at 400 V AC.
- Suitable for low-voltage AC systems operating up to 690 V AC.
- Fixed construction with horizontal rear terminals for switchboard integration.
- High electrical and mechanical durability for demanding industrial service.
Key Features
- ABB SACE Emax E3S 2500 air circuit breaker.
- 2500 A rated current.
- Four-pole configuration.
- PR123/P-LSIG electronic overcurrent release.
- LSIG protection: long-time, short-time, instantaneous and earth-fault functions.
- 690 V AC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 75 kA rated ultimate short-circuit breaking capacity across specified AC voltages up to 690 V.
- 75 kA rated service short-circuit breaking capacity across specified AC voltages up to 690 V.
- 75 kA short-time withstand current for 1 s.
- Fixed installation with horizontal rear flat terminals.
Advanced LSIG Protection for High-Current Distribution
Air circuit breakers such as the ABB E3S 2500 provide switching, isolation and automatic protection for high-current low-voltage distribution circuits. The electronic release monitors circuit conditions and commands the breaker to open when configured overload, short-circuit or earth-fault thresholds are reached, helping protect conductors, switchgear and connected equipment.
The PR123/P-LSIG release provides a comprehensive LSIG protection package suitable for sophisticated power distribution networks. Combined with the E3S breaker's high short-circuit capability and fixed horizontal rear-terminal configuration, the 1SDA056287R1 is well suited to installations requiring dependable protection, selective coordination and robust switchboard integration.
Typical Applications
- Main incoming protection in low-voltage switchboards.
- Industrial power distribution systems.
- High-current feeder and distribution circuits.
- Manufacturing and process plant electrical systems.
- Commercial and infrastructure power distribution.
- Transformer and generator distribution switchboards.
- Critical installations requiring advanced LSIG electronic protection.
Technical Specifications
| Series | SACE Emax E3 |
|---|---|
| ABB order code | 1SDA056287R1 |
| Product type | Air circuit breaker |
| Frame | E3 |
| Short-circuit performance level | S |
| Rated current (In) | 2500 A |
| Rated uninterrupted current (Iu) | 2500 A |
| Rated operational current (Ie) | 2500 A |
| Number of poles | 4 |
| Current type | AC |
| Trip unit | PR123/P-LSIG |
| Release type | Electronic |
| Protection functions | LSIG – long-time, short-time, instantaneous and earth-fault |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) at 400 V AC | 75 kA |
| Rated service short-circuit breaking capacity (Ics) at 400 V AC | 75 kA |
| Rated short-time withstand current (Icw), 1 s | 75 kA |
| Rated short-time withstand current (Icw), 3 s | 65 kA |
| Power loss | 205 W |
| Installation | Fixed |
| Terminal connection | Rear flat horizontal |
| Electrical durability at ≤440 V | 8000 cycles |
| Electrical durability at 500–690 V | 7000 cycles |
| Mechanical durability | 20,000 cycles |
| Dimensions (W × H × D) | 530 × 418 × 302 mm |
| Net weight | 76 kg |
| Standard | IEC |
| EAN | 8015644576271 |
| Product group | 310513-New Emax |
Frequently Asked Questions
What is the ABB 1SDA056287R1?
The ABB 1SDA056287R1 is a SACE Emax E3S 2500 four-pole fixed air circuit breaker rated at 2500 A and equipped with a PR123/P-LSIG electronic overcurrent release.
What protection functions does the PR123/P-LSIG provide?
The PR123/P-LSIG provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection functions.
What is the current rating of the ABB E3S 2500 1SDA056287R1?
The circuit breaker has a rated current of 2500 A.
What is the breaking capacity of the ABB E3S 2500?
The E3S 2500 has a rated ultimate and service short-circuit breaking capacity of 75 kA at 400 V AC.
What installation and terminal arrangement does the ABB 1SDA056287R1 use?
The 1SDA056287R1 is a fixed four-pole circuit breaker with rear flat horizontal terminals, designed for permanent installation in compatible low-voltage switchboards.
Trusted ABB Protection for Critical Power Systems
ABB SACE Emax air circuit breakers provide dependable high-current switching and protection for demanding low-voltage power distribution systems, combining advanced electronic protection, robust short-circuit performance and durable switchboard construction.
