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1SDA056114R1 ABB E3N 2500 PR121/P-LSIG 2500 A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA056114R1 E3N 2500 is a 2500 A three-pole fixed SACE Emax air circuit breaker with a PR121/P-LSIG electronic overcurrent release and rear horizontal terminals for comprehensive low-voltage power distribution protection.
£14,045.46
Why Choose the ABB E3N 2500 PR121/P-LSIG Air Circuit Breaker?
The ABB E3N 2500 PR121/P-LSIG, order code 1SDA056114R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for protection and switching of high-current low-voltage power distribution systems. Part of the proven ABB SACE Emax E3 series, this three-pole fixed circuit breaker combines a 2500 A current rating with the PR121/P-LSIG electronic overcurrent release for comprehensive protection in demanding industrial and commercial installations.
The PR121/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and earth-fault protection functions. This comprehensive LSIG protection helps safeguard electrical networks against overloads, short circuits and earth faults while supporting effective protection coordination throughout the distribution system.
With a rated uninterrupted current of 2500 A and a rated operational voltage of 690 V AC, the E3N 2500 is suitable for main switchboards and high-power distribution applications. This version features a three-pole fixed configuration with rear horizontal terminals, four auxiliary contacts and circuit-breaker open/closed position indication.
Key Advantages
- Heavy-duty 2500 A air circuit breaker for high-current power distribution.
- PR121/P-LSIG electronic overcurrent release provides comprehensive circuit protection.
- LSIG functions provide long-time, short-time, instantaneous and earth-fault protection.
- Three-pole fixed configuration for permanent switchboard installation.
- Rear horizontal terminals facilitate integration with switchboard busbar systems.
- 65 kA short-circuit breaking capacity supports demanding industrial distribution applications.
Key Features
- ABB SACE Emax E3N series.
- 2500 A rated uninterrupted current.
- 690 V AC rated operational voltage.
- PR121/P-LSIG electronic trip unit.
- Integrated earth-fault protection through the LSIG release.
- Three-pole fixed construction.
- Rear horizontal terminal arrangement.
- 65 kA rated ultimate short-circuit breaking capacity at 400 V AC.
- 65 kA rated short-time withstand current for 1 s.
- Four auxiliary contacts with circuit-breaker open/closed position indication.
Comprehensive Protection for Power Distribution Systems
Air circuit breakers such as the ABB E3N protect high-current low-voltage distribution circuits by interrupting fault currents when configured protection thresholds are exceeded. Their high breaking capacity makes them particularly suitable for main incoming feeders, distribution switchboards and other critical sections of industrial electrical networks.
The PR121/P-LSIG release adds earth-fault protection to the standard overload and short-circuit protection functions, providing a comprehensive protection package for demanding installations. Combined with the E3N frame's robust fixed construction and high current capability, it provides dependable protection for modern power distribution systems.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Transformer-fed low-voltage distribution circuits.
- High-current switchgear and control assemblies.
Technical Specifications
| Series | SACE Emax E3 |
|---|---|
| Order code | 1SDA056114R1 |
| Product type | Air circuit breaker |
| Rated uninterrupted current (Iu) | 2500 A |
| Rated operational voltage | 690 V AC |
| Number of poles | 3 |
| Installation | Fixed |
| Trip unit | PR121/P-LSIG electronic overcurrent release |
| Protection functions | Long-time, short-time, instantaneous and earth fault |
| Short-circuit performance level | N |
| Rated ultimate short-circuit breaking capacity (Icu) at 400 V AC | 65 kA |
| Rated service short-circuit breaking capacity (Ics) at 400 V AC | 65 kA |
| Rated short-time withstand current (Icw), 1 s | 65 kA |
| Terminal connection | Rear horizontal |
| Current type | AC |
| Mechanical durability | 20,000 cycles |
| Dimensions (W × H × D) | 404 × 418 × 302 mm |
| Weight | 60 kg |
| EAN | 8015644574543 |
Frequently Asked Questions
What is the ABB 1SDA056114R1 used for?
It is a 2500 A air circuit breaker designed for switching and comprehensive overcurrent protection in high-current low-voltage power distribution systems.
What protection unit is fitted to this circuit breaker?
The breaker is fitted with an ABB PR121/P-LSIG electronic overcurrent release, providing long-time, short-time, instantaneous and earth-fault protection.
What is the current rating of the ABB E3N 2500?
This version has a rated uninterrupted current of 2500 A.
Is the ABB 1SDA056114R1 fixed or withdrawable?
The 1SDA056114R1 is a three-pole fixed circuit breaker with rear horizontal terminals.
What is the short-circuit breaking capacity?
The E3N 2500 N-performance version has a rated ultimate short-circuit breaking capacity of 65 kA at 400 V AC.
Trusted Low-Voltage Protection from ABB
ABB SACE Emax air circuit breakers are engineered for dependable switching and protection in demanding low-voltage power distribution systems, combining high current capability, electronic LSIG protection and practical switchboard integration.
