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1SDA056298R1 ABB E3S2500PR121/P-LSIG 2500A 4-Pole Air Circuit Breaker Moving Part
ABB E3S2500PR121/P-LSIG is a 2500 A four-pole withdrawable SACE Emax air circuit breaker moving part with a PR121/P-LSIG R2500 electronic trip unit providing long-time, short-time, instantaneous and earth-fault protection.
£21,101.09
Why Choose the ABB E3S2500PR121/P-LSIG 2500A Air Circuit Breaker?
The ABB E3S2500PR121/P-LSIG is a high-performance 2500 A four-pole air circuit breaker moving part designed for reliable switching and comprehensive overcurrent protection in demanding low-voltage power distribution systems. Part of the established ABB SACE Emax New Emax series, this E3S configuration combines high short-circuit performance with the PR121/P-LSIG electronic overcurrent release.
The PR121/P-LSIG trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. These LSIG functions help protect cables, busbars, switchboards and connected electrical equipment against sustained overloads, severe short-circuit currents and earth faults, providing comprehensive protection for critical industrial and commercial distribution networks.
With a rated uninterrupted current of 2500 A, a four-pole withdrawable moving-part configuration and a PR121/P-LSIG R2500 release, ABB order code 1SDA056298R1 is designed for compatible SACE Emax withdrawable switchgear. The moving part is equipped with four auxiliary contacts and circuit-breaker open/closed position indication for effective monitoring and control integration.
Key Advantages
- High-capacity 2500 A air circuit breaker moving part for demanding low-voltage distribution.
- Four-pole withdrawable configuration suitable for three-phase four-wire power systems.
- Advanced PR121/P-LSIG R2500 electronic overcurrent release.
- LSIG functions provide long-time, short-time, instantaneous and earth-fault protection.
- 75 kA ultimate and service short-circuit breaking capacity throughout the specified operating-voltage range up to 690 V AC.
- Withdrawable construction supports efficient inspection, servicing and breaker replacement.
- Four auxiliary contacts and open/closed position indication support switchboard monitoring and control.
Key Features
- ABB SACE Emax E3S series.
- 2500 A rated uninterrupted current.
- Four-pole circuit-breaker configuration.
- Withdrawable moving part (WMP).
- PR121/P-LSIG electronic trip unit.
- R2500 overcurrent release.
- Long-time overload protection (L).
- Short-time short-circuit protection (S).
- Instantaneous short-circuit protection (I).
- Integrated earth-fault protection (G).
- 690 V AC rated operational voltage.
Comprehensive Protection for High-Current Power Distribution
Air circuit breakers such as the ABB E3S2500 provide switching and overcurrent protection for high-current low-voltage distribution circuits. The electronic trip release monitors circuit conditions and initiates breaker operation when configured protection thresholds are exceeded, helping protect cables, busbars, switchboards and connected electrical equipment against damaging overload, short-circuit and earth-fault currents.
The PR121/P-LSIG release combines four essential protection functions within a single electronic trip system. Together with the E3S frame's 75 kA short-circuit breaking capacity, 2500 A current rating, four-pole arrangement and service-friendly withdrawable construction, this moving part is well suited to critical main distribution and high-current feeder applications requiring integrated earth-fault protection.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Three-phase four-wire distribution networks.
- Manufacturing and process facilities.
- Commercial and infrastructure electrical installations.
- Incoming mains and high-current feeder protection.
- Transformer secondary distribution systems.
- Circuits requiring integrated earth-fault protection.
- Withdrawable ABB SACE Emax switchgear assemblies.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| ABB order code | 1SDA056298R1 |
| Extended product type | E3S2500PR121/P-LSIGIn=2500A4pWMP |
| Product type | Air circuit breaker moving part |
| Frame | E3S |
| Short-circuit performance level | S |
| Rated current | 2500 A |
| Rated operational current | 2500 A |
| Rated uninterrupted current | 2500 A |
| Number of poles | 4 |
| 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 | 75 kA at 220–690 V AC |
| Rated service short-circuit breaking capacity | 75 kA at 220–690 V AC |
| Rated short-time withstand current | 75 kA for 1 s; 65 kA for 3 s |
| Execution | Withdrawable moving part (WMP) |
| Trip unit | PR121/P-LSIG |
| Release type | Electronic |
| Overcurrent release rating | R2500 |
| Protection functions | L, S, I and G |
| Overload release setting range | 400–2500 A |
| Short-time short-circuit setting range | 2500–25,000 A |
| Instantaneous short-circuit setting range | 3750–37,500 A |
| Integrated earth-fault protection | Yes |
| Auxiliary contacts | 4 |
| Auxiliary contact arrangement | 2 NO + 2 NC |
| Position indication | Circuit breaker open / closed |
| Motor operator | Optional |
| Protection rating | IP20 |
| Power loss | 350 W |
| Electrical durability | 8000 cycles at Ue ≤ 440 V; 7000 cycles at Ue 500–690 V |
| Maximum electrical operating frequency | 20 cycles per hour |
| Mechanical durability | 20,000 cycles |
| Maximum mechanical operating frequency | 60 cycles per hour |
| Dimensions (W × H × D) | 558 × 461 × 396.5 mm |
| Net weight | 81 kg |
| EAN | 8015644576387 |
| Customs tariff number | 85362090 |
| Standard | IEC |
Frequently Asked Questions
What is the ABB E3S2500PR121/P-LSIG used for?
It is a 2500 A four-pole air circuit breaker moving part designed for switching and protecting high-current low-voltage AC power distribution circuits in compatible ABB SACE Emax withdrawable switchgear.
What protection does the PR121/P-LSIG trip unit provide?
The PR121/P-LSIG electronic trip unit provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection.
What is the breaking capacity of ABB 1SDA056298R1?
The E3S2500 has a rated ultimate and service short-circuit breaking capacity of 75 kA throughout its specified operating-voltage range up to 690 V AC, with a rated short-time withstand current of 75 kA for 1 s.
Is ABB 1SDA056298R1 a fixed or withdrawable breaker?
ABB order code 1SDA056298R1 is a four-pole withdrawable moving part for a compatible SACE Emax E3S circuit-breaker installation.
Does the E3S2500PR121/P-LSIG provide earth-fault protection?
Yes. The G function of the PR121/P-LSIG electronic release provides integrated earth-fault protection in addition to long-time, short-time and instantaneous overcurrent protection.
Trusted by Electrical Professionals Worldwide
ABB SACE Emax air circuit breakers are widely used in industrial and commercial low-voltage distribution systems, combining robust high-current switching technology with configurable electronic protection and service-friendly withdrawable construction for demanding electrical installations.
