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1SDA056276R1 ABB E3S2500 PR122/P-LSI 2500A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA056276R1 is a SACE Emax E3S2500 three-pole fixed air circuit breaker rated at 2500 A with rear horizontal terminals and a PR122/P-LSI electronic overcurrent release for high-current low-voltage circuit protection.
£13,634.90
Why Choose the ABB E3S2500 PR122/P-LSI 2500A 3-Pole Air Circuit Breaker?
The ABB E3S2500 PR122/P-LSI, order code 1SDA056276R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and protection in high-current low-voltage electrical distribution systems. As part of the ABB SACE Emax E3 series, this three-pole fixed circuit breaker combines a 2500 A rated uninterrupted current with the PR122/P-LSI electronic overcurrent release.
The PR122/P-LSI trip unit provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. This LSI configuration provides coordinated protection against sustained overloads and short-circuit faults, making the breaker suitable for demanding industrial, commercial and infrastructure power distribution applications where ground-fault protection is not required from the trip unit.
With a 2500 A rated current, three-pole configuration and fixed construction with rear horizontal terminals, the E3S2500 is suitable for main switchboards and high-current distribution systems. The E3S performance level provides rated ultimate and service short-circuit breaking capacities of 75 kA at 415 V AC, together with short-time withstand ratings of 75 kA for 1 s and 65 kA for 3 s.
Key Advantages
- High-performance ABB SACE Emax air circuit breaker for low-voltage power distribution.
- 2500 A rated uninterrupted current for demanding high-current installations.
- Three-pole configuration for three-phase electrical distribution systems.
- Advanced PR122/P-LSI electronic overcurrent release.
- Long-time, short-time and instantaneous overcurrent protection.
- 75 kA ultimate and service short-circuit breaking capacity at 415 V AC.
- High short-time withstand capability supports selective protection and system coordination.
- Fixed construction with rear horizontal terminals for switchboard integration.
Key Features
- ABB SACE Emax E3S2500 air circuit breaker.
- 2500 A rated uninterrupted current.
- Three-pole (3P) configuration.
- PR122/P-LSI electronic overcurrent release.
- Long-time overload protection (L).
- Short-time short-circuit protection (S).
- Instantaneous short-circuit protection (I).
- Fixed (F) installation.
- Rear horizontal (HR) terminals.
- 690 V AC rated operational voltage.
- 75 kA rated ultimate short-circuit breaking capacity at 415 V AC.
- 75 kA rated service short-circuit breaking capacity at 415 V AC.
- 75 kA rated short-time withstand current for 1 s.
- 65 kA rated short-time withstand current for 3 s.
- 20,000-cycle mechanical durability for dependable operation.
Reliable Circuit Protection for High-Current Power Distribution
Air circuit breakers such as the ABB SACE Emax E3S2500 provide switching, isolation and overcurrent protection for high-current low-voltage distribution circuits. The electronic trip unit monitors electrical current and initiates circuit-breaker operation when configured protection thresholds are exceeded, helping protect cables, switchgear and connected equipment from damaging electrical faults.
The PR122/P-LSI release provides three levels of overcurrent protection for effective coordination within electrical distribution systems. Long-time protection responds to sustained overloads, short-time protection allows controlled response and selectivity during short-circuit conditions, and instantaneous protection provides rapid interruption of severe short-circuit currents.
Typical Applications
- Main low-voltage electrical distribution switchboards.
- Industrial power distribution systems.
- Commercial and infrastructure electrical installations.
- Manufacturing and process facilities.
- High-current incomer and feeder protection.
- Transformer and generator distribution systems.
Technical Specifications
| Series | SACE Emax E3 |
|---|---|
| ABB order code | 1SDA056276R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame / performance level | E3S |
| Rated current | 2500 A |
| Rated uninterrupted current | 2500 A |
| Rated operational current | 2500 A |
| Number of poles | 3 |
| Version | Fixed |
| Terminal arrangement | Rear horizontal |
| Trip unit | PR122/P-LSI |
| Release type | Electronic |
| Protection functions | LSI |
| Long-time protection | L |
| Short-time protection | S |
| Instantaneous protection | I |
| Current type | AC |
| Rated operational voltage | 690 V AC |
| Rated voltage | 690 V |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 12 kV |
| Rated ultimate short-circuit breaking capacity at 220–230 V AC | 75 kA |
| Rated ultimate short-circuit breaking capacity at 380–440 V AC | 75 kA |
| Rated ultimate short-circuit breaking capacity at 500 V AC | 75 kA |
| Rated ultimate short-circuit breaking capacity at 660–690 V AC | 75 kA |
| Rated service short-circuit breaking capacity at 220–230 V AC | 75 kA |
| Rated service short-circuit breaking capacity at 380–440 V AC | 75 kA |
| Rated service short-circuit breaking capacity at 500 V AC | 75 kA |
| Rated service short-circuit breaking capacity at 660–690 V AC | 75 kA |
| Rated short-time withstand current (1 s) | 75 kA |
| Rated short-time withstand current (3 s) | 65 kA |
| Power loss | 205 W |
| Electrical durability at ≤440 V | 8000 cycles |
| Electrical durability at 500–690 V | 7000 cycles |
| Electrical operating frequency | 20 cycles per hour |
| Mechanical durability | 20,000 cycles |
| Mechanical operating frequency | 60 cycles per hour |
| Dimensions (W × H × D) | 404 × 418 × 302 mm |
| Net weight | 60 kg |
| EAN | 8015644576165 |
| Customs tariff number | 85362090 |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA056276R1 used for?
The ABB 1SDA056276R1 is a SACE Emax E3S2500 air circuit breaker designed for switching and protecting high-current low-voltage electrical distribution circuits.
What is the rated current of the ABB E3S2500 PR122/P-LSI?
The E3S2500 has a rated uninterrupted current of 2500 A.
What protection functions does the PR122/P-LSI trip unit provide?
The PR122/P-LSI electronic overcurrent release provides long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection.
What is the breaking capacity of the ABB E3S2500?
The E3S2500 has rated ultimate and service short-circuit breaking capacities of 75 kA at 415 V AC, with short-time withstand ratings of 75 kA for 1 s and 65 kA for 3 s.
Is the ABB 1SDA056276R1 fixed or withdrawable?
The 1SDA056276R1 is a fixed three-pole air circuit breaker with rear horizontal terminals for permanent integration into low-voltage switchboards and power distribution equipment.
Trusted for Critical Power Distribution
ABB SACE Emax air circuit breakers are designed for dependable protection and control of low-voltage electrical distribution systems, combining high-current switching capability with electronic overcurrent protection for demanding industrial, commercial and infrastructure applications.
