Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA057557R1 ABB E3S-A 2500 PR123/P-LSIG 2500 A 3-Pole Air Circuit Breaker
ABB 1SDA057557R1 is a SACE Emax E3S-A 2500 A three-pole air circuit breaker with a PR123/P-LSIG electronic trip unit providing long-time, short-time, instantaneous and ground-fault protection.
£19,615.62
Why Choose the ABB E3S-A 2500 PR123/P-LSIG Air Circuit Breaker?
The ABB E3S-A 2500 PR123/P-LSIG, order code 1SDA057557R1, is a high-performance SACE Emax air circuit breaker designed for protection and switching in high-current low-voltage electrical distribution systems. As part of ABB's New Emax range, this three-pole breaker combines the robust E3S-A platform with an advanced PR123/P-LSIG electronic protection release.
With a rated current of 2500 A, the breaker is engineered for demanding industrial, commercial and infrastructure power distribution applications. Its LSIG protection functionality provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection, helping safeguard conductors, switchgear and connected electrical equipment.
The PR123/P electronic trip unit provides sophisticated electronic protection suitable for installations requiring accurate fault detection and coordinated protection. Combined with the proven SACE Emax breaker platform, the E3S-A 2500 provides dependable switching and circuit protection for critical low-voltage distribution networks.
Key Advantages
- High-current 2500 A air circuit breaker for demanding power distribution applications.
- PR123/P-LSIG electronic trip unit for comprehensive circuit protection.
- LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
- Three-pole configuration for three-phase low-voltage distribution systems.
- Advanced electronic protection supports selective and coordinated electrical system design.
- Part of the proven ABB SACE Emax circuit breaker family.
Key Features
- ABB SACE Emax E3S-A breaker platform.
- 2500 A rated current.
- Three-pole construction.
- PR123/P-LSIG electronic overcurrent release.
- Long-time overload protection.
- Short-time short-circuit protection.
- Instantaneous short-circuit protection.
- Ground-fault protection.
- Designed for high-current low-voltage switchgear and distribution systems.
Advanced Protection for Low-Voltage Distribution
Air circuit breakers such as the ABB SACE Emax E3S-A are used to protect high-current electrical distribution circuits against overloads and short circuits while also providing dependable switching and isolation. Electronic trip technology allows protection characteristics to be configured for the requirements of the electrical installation.
The PR123/P-LSIG release provides four principal protection functions: long-time protection against sustained overloads, short-time protection for selective short-circuit coordination, instantaneous protection against severe faults and ground-fault protection. This comprehensive functionality makes the breaker well suited to sophisticated industrial and commercial distribution systems.
Typical Applications
- Industrial low-voltage switchboards.
- Main incoming electrical distribution circuits.
- High-current distribution feeders.
- Manufacturing and process plants.
- Commercial and infrastructure power systems.
- Transformer and generator distribution systems.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| ABB order code | 1SDA057557R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame | E3S-A |
| Rated current | 2500 A |
| Number of poles | 3 |
| Trip unit | PR123/P-LSIG |
| Protection functions | Long-time, short-time, instantaneous and ground fault (LSIG) |
| Application | Low-voltage power distribution |
Frequently Asked Questions
What is the ABB 1SDA057557R1?
The ABB 1SDA057557R1 is an E3S-A SACE Emax three-pole air circuit breaker rated at 2500 A and equipped with a PR123/P-LSIG electronic protection release.
What is the rated current of the E3S-A 2500?
This circuit breaker has a rated current of 2500 A, making it suitable for high-current low-voltage power distribution applications.
What protection does the PR123/P-LSIG release provide?
The PR123/P-LSIG provides long-time, short-time, instantaneous and ground-fault protection, collectively identified as LSIG protection.
How many poles does the ABB 1SDA057557R1 have?
This E3S-A configuration is a three-pole circuit breaker intended for three-phase electrical distribution systems.
Where is the ABB E3S-A 2500 typically used?
It is typically used in high-current low-voltage switchboards, main distribution systems, industrial plants and infrastructure installations requiring advanced electronic circuit protection.
Trusted Protection from ABB
ABB SACE Emax air circuit breakers provide dependable switching and advanced electronic protection for demanding low-voltage electrical distribution systems in industrial, commercial and infrastructure applications.
