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1SDA057409R1 ABB E3N-A 2500 PR121/P-LSIG 2500 A 3-Pole Withdrawable Air Circuit Breaker
ABB 1SDA057409R1 SACE Emax E3N-A 2500 A three-pole withdrawable air circuit breaker moving part with PR121/P-LSIG R2500 electronic overcurrent release for comprehensive low-voltage AC power distribution protection.
£14,562.61
Why Choose the ABB E3N-A 2500 PR121/P-LSIG 1SDA057409R1 Air Circuit Breaker?
The ABB 1SDA057409R1 is a high-performance SACE Emax E3N-A air circuit breaker moving part designed for reliable switching and comprehensive protection in high-current low-voltage electrical distribution systems. As part of the ABB SACE Emax series, this three-pole UL version combines a 2500 A rated current with the PR121/P-LSIG electronic overcurrent release for demanding industrial, commercial and infrastructure power distribution applications.
The breaker is equipped with an ABB PR121/P-LSIG R2500 electronic trip unit, providing long-time, short-time, instantaneous and ground-fault protection. These LSIG protection functions enable the circuit breaker to respond to overloads, short circuits and earth faults, helping protect cables, busbars, switchgear and connected electrical equipment.
With a rated current of 2500 A and a three-pole withdrawable configuration, the E3N-A 1SDA057409R1 is designed for high-capacity three-phase AC distribution systems. Supplied as the moving part for a withdrawable installation, it is fitted with four auxiliary contacts and circuit-breaker open/closed position indication for integration into compatible SACE Emax switchgear assemblies.
Key Advantages
- Heavy-duty ABB SACE Emax air circuit breaker moving part for low-voltage power distribution.
- 2500 A rated current for demanding high-current electrical installations.
- PR121/P-LSIG R2500 electronic overcurrent release for comprehensive circuit protection.
- LSIG functions provide long-time, short-time, instantaneous and ground-fault protection.
- Three-pole withdrawable configuration for three-phase AC distribution systems.
- Moving-part construction supports convenient removal and servicing within compatible switchgear.
- Four auxiliary contacts and open/closed position indication support signalling and control.
Key Features
- ABB SACE Emax E3N-A series.
- 2500 A rated current.
- Three-pole air circuit breaker moving part.
- PR121/P-LSIG R2500 electronic trip unit.
- 37500 A instantaneous current setting.
- Long-time overload protection.
- Short-time selective short-circuit protection.
- Instantaneous short-circuit protection.
- Ground-fault protection.
- Withdrawable moving-part configuration.
- Four auxiliary contacts.
- Open/closed circuit-breaker position indication.
- UL version for compatible SACE Emax installations.
Comprehensive Protection for High-Current Power Distribution
Air circuit breakers such as the ABB SACE Emax E3N-A are designed to switch and protect high-current low-voltage distribution circuits. The PR121/P-LSIG electronic trip unit monitors circuit conditions and provides multiple protection functions, enabling the breaker to respond to overloads, short circuits and ground faults while supporting effective protection coordination throughout the electrical distribution system.
The LSIG configuration provides ground-fault protection in addition to long-time, short-time and instantaneous overcurrent protection. Combined with its withdrawable moving-part construction, the 1SDA057409R1 provides a practical solution for installations where comprehensive protection, maintainability and operational flexibility are important.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Commercial and infrastructure electrical distribution.
- Manufacturing and process plant switchgear.
- Generator and transformer distribution circuits.
- High-current three-phase AC installations.
- Distribution systems requiring ground-fault protection.
Technical Specifications
| Series | SACE Emax E3N-A |
|---|---|
| Product group | 310513-New Emax |
| Order code / MPN | 1SDA057409R1 |
| Product type | Air circuit breaker moving part |
| Rated current | 2500 A |
| Current type | AC |
| Number of poles | 3 |
| Trip unit | PR121/P-LSIG R2500 |
| Protection functions | Long-time, short-time, instantaneous and ground fault (LSIG) |
| Instantaneous current setting | 37500 A |
| Installation | Withdrawable moving part |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Electrical durability | 8000 cycles |
| Mechanical durability | 15000 cycles |
| Operating frequency | 30 cycles per hour |
| Power loss | 350 W per pole at rated operating conditions |
| Dimensions (H × W × D) | 461 × 432 × 396.5 mm |
| Weight | 64 kg |
| EAN | 8015644596729 |
| Customs tariff number | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA057409R1 used for?
The ABB 1SDA057409R1 is a SACE Emax E3N-A air circuit breaker moving part designed for switching and protecting high-current low-voltage electrical distribution circuits in industrial, commercial and infrastructure applications.
What is the rated current of the ABB E3N-A 1SDA057409R1?
The circuit breaker has a rated current of 2500 A and a three-pole configuration for three-phase electrical distribution systems.
Which trip unit is fitted to the ABB 1SDA057409R1?
The breaker is fitted with an ABB PR121/P-LSIG R2500 electronic overcurrent release, providing long-time, short-time, instantaneous and ground-fault protection.
What does LSIG protection mean?
LSIG refers to long-time overload protection, short-time short-circuit protection, instantaneous short-circuit protection and ground-fault protection, providing comprehensive protection for electrical distribution circuits.
Is the ABB 1SDA057409R1 fixed or withdrawable?
The 1SDA057409R1 is a withdrawable circuit breaker moving part designed for use with a compatible SACE Emax fixed part, allowing the breaker to be removed from the switchgear for servicing and maintenance.
Trusted by Electrical Professionals Worldwide
ABB SACE Emax air circuit breakers are widely used in demanding low-voltage power distribution systems where dependable switching, comprehensive circuit protection and maintainable switchgear solutions are required.
