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1SDA056471R1 ABB E3H2500 PR123/P-LSIG 2500A 3P Fixed Air Circuit Breaker
ABB 1SDA056471R1 is a SACE Emax E3H 2500 A three-pole fixed air circuit breaker with rear horizontal terminals and a PR123/P-LSIG electronic release providing comprehensive LSIG protection for high-current low-voltage power distribution.
£23,566.72
Why Choose the ABB E3H2500 PR123/P-LSIG 2500A 3P Fixed Air Circuit Breaker?
The ABB E3H2500 PR123/P-LSIG, order code 1SDA056471R1, is a high-performance SACE Emax air circuit breaker designed for protection and switching in demanding low-voltage power distribution systems. Part of the ABB SACE Emax E3H series, this three-pole fixed circuit breaker has a rated current of 2500 A and incorporates the advanced PR123/P-LSIG electronic overcurrent release.
The PR123/P-LSIG release provides long-time, short-time, instantaneous and earth-fault protection functions, delivering comprehensive protection against overloads, short circuits and earth faults. This advanced electronic protection makes the breaker particularly suitable for critical industrial switchboards, transformer protection, main incomers and high-current distribution feeders where dependable protection and selectivity are important.
This version is a fixed three-pole circuit breaker with rear horizontal terminals. It is fitted with four auxiliary contacts and circuit-breaker open/closed position indication. With a rated operational voltage of 690 V AC, an E3H high short-circuit performance level and an ultimate breaking capacity of up to 100 kA, the 1SDA056471R1 is engineered for demanding electrical distribution installations.
Key Advantages
- High-performance ABB SACE Emax E3H air circuit breaker for demanding low-voltage distribution.
- 2500 A rated current for high-current industrial and commercial systems.
- Three-pole fixed configuration for three-phase electrical distribution.
- Advanced PR123/P-LSIG electronic trip unit.
- Comprehensive long-time, short-time, instantaneous and earth-fault protection.
- 100 kA ultimate short-circuit breaking capacity at 220–500 V AC.
- 85 kA service short-circuit breaking capacity across the rated voltage range.
- Rear horizontal terminals for fixed switchboard installations.
Key Features
- ABB SACE Emax E3H series.
- 2500 A rated uninterrupted current.
- 3-pole fixed circuit-breaker construction.
- PR123/P-LSIG electronic release.
- Long-time (L), short-time (S), instantaneous (I) and earth-fault (G) protection.
- 690 V AC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 75 kA short-time withstand current for 1 s.
- Rear flat horizontal terminal connections.
- Four auxiliary contacts for signalling and control.
- Circuit-breaker open/closed position indication.
Advanced LSIG Protection for High-Current Distribution
Air circuit breakers such as the ABB SACE Emax E3H provide switching, isolation and overcurrent protection for high-current low-voltage distribution systems. The E3H performance level combines substantial short-circuit interruption capability with robust construction, making it suitable for main switchboards and other critical distribution points where electrical faults must be cleared reliably.
The PR123/P-LSIG electronic release provides long-time overload protection, short-time protection for selective coordination, instantaneous protection against severe short circuits and integrated earth-fault protection. Combined with the 2500 A E3H breaker frame, these functions enable the 1SDA056471R1 to provide comprehensive protection for major industrial and infrastructure power distribution systems.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Transformer secondary protection.
- Main incoming circuit-breaker applications.
- High-current outgoing feeder protection.
- Power distribution centres and electrical substations.
Technical Specifications
| Series | SACE Emax E3H |
|---|---|
| ABB order code | 1SDA056471R1 |
| EAN | 8015644578114 |
| Product type | Air circuit breaker |
| Frame / performance level | E3H |
| Rated current (In) | 2500 A |
| Rated operational current (Ie) | 2500 A |
| Rated uninterrupted current (Iu) | 2500 A |
| Number of poles | 3 |
| Current type | AC |
| Version | Fixed |
| Terminal connection | Rear flat horizontal |
| Trip unit | PR123/P-LSIG |
| Release type | Electronic |
| Protection functions | Long-time (L), short-time (S), instantaneous (I), earth fault (G) |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Ultimate short-circuit breaking capacity (Icu) | 100 kA at 220–500 V AC; 85 kA at 660–690 V AC |
| Service short-circuit breaking capacity (Ics) | 85 kA at 220–690 V AC |
| Short-time withstand current (Icw) | 75 kA for 1 s; 65 kA for 3 s |
| Overload release setting range | 1000–2500 A |
| Short-time short-circuit release setting range | 1500–25000 A |
| Instantaneous short-circuit release setting range | 3750–37500 A |
| Earth-fault protection | Integrated |
| Auxiliary contacts | 4 (2 NO + 2 NC) |
| Power loss | 205 W |
| Electrical durability | 8,000 cycles at ≤440 V; 7,000 cycles at 500–690 V |
| Mechanical durability | 20,000 cycles |
| Dimensions (W × H × D) | 404 × 418 × 302 mm |
| Net weight | 60 kg |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA056471R1?
The ABB 1SDA056471R1 is a SACE Emax E3H 2500 A three-pole fixed air circuit breaker with rear horizontal terminals and a PR123/P-LSIG electronic overcurrent release.
What protection functions does the PR123/P-LSIG provide?
The PR123/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.
What is the rated current of this Emax circuit breaker?
The E3H2500 has a rated uninterrupted current of 2500 A, making it suitable for high-current low-voltage power distribution systems.
Is the ABB 1SDA056471R1 fixed or withdrawable?
This model is a fixed three-pole circuit breaker fitted with rear flat horizontal power terminals.
What is the breaking capacity of the ABB E3H2500?
The breaker has an ultimate short-circuit breaking capacity of 100 kA at 220–500 V AC and 85 kA at 660–690 V AC, with an 85 kA service breaking capacity throughout the 220–690 V AC range.
Trusted Protection for Critical Power Systems
ABB SACE Emax air circuit breakers combine high short-circuit performance, advanced electronic protection and robust construction to provide dependable protection for demanding industrial, commercial and infrastructure power distribution systems.
