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1SDA057659R1 ABB E3H-A 2500 PR121/P-LSI 2500 A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA057659R1 E3H-A 2500 PR121/P-LSI is a 2500 A three-pole fixed SACE Emax air circuit breaker with rear horizontal terminals and a PR121/P-LSI R2500 electronic overcurrent release providing LSI protection.
£15,595.04
Why Choose the ABB E3H-A 2500 PR121/P-LSI Air Circuit Breaker?
The ABB E3H-A 2500 PR121/P-LSI, order code 1SDA057659R1, is a high-performance SACE Emax fixed air circuit breaker designed for switching and protection in high-current low-voltage AC power distribution systems. This UL configuration has a rated current of 2500 A, a three-pole arrangement and a PR121/P-LSI R2500 electronic overcurrent release.
As part of the ABB SACE Emax E3H-A series, the 1SDA057659R1 combines robust switching performance with electronic protection against overload and short-circuit conditions. Its PR121/P-LSI release provides long-time, short-time and instantaneous protection functions, delivering LSI protection for demanding industrial, commercial and infrastructure electrical distribution applications.
This specific configuration is a three-pole fixed circuit breaker with rear horizontal terminals and an instantaneous release reference of 37,500 A. It is fitted with four auxiliary contacts and circuit-breaker open/closed position indication, supporting practical integration and status monitoring within compatible ABB SACE Emax switchgear.
Key Advantages
- High-performance 2500 A ABB SACE Emax air circuit breaker for demanding low-voltage distribution systems.
- PR121/P-LSI R2500 electronic overcurrent release provides coordinated LSI protection.
- Three-pole fixed configuration for three-phase AC power distribution.
- Rear horizontal terminals support practical switchboard integration.
- 37,500 A instantaneous release reference for high-level short-circuit protection.
- Four auxiliary contacts and open/closed indication support circuit-breaker status monitoring.
Key Features
- ABB SACE Emax E3H-A air circuit breaker.
- 2500 A rated current.
- Three-pole construction.
- PR121/P-LSI R2500 electronic overcurrent release.
- Long-time (L) overload protection.
- Short-time (S) short-circuit protection.
- Instantaneous (I) short-circuit protection.
- Fixed version with rear horizontal terminals.
- Fitted with four auxiliary contacts.
- Integrated circuit-breaker open/closed position indication.
Reliable Circuit Protection for Power Distribution
Air circuit breakers such as the ABB SACE Emax E3H-A provide switching, isolation and overcurrent protection for high-current low-voltage electrical distribution systems. The electronic trip release monitors circuit current and initiates breaker operation when configured protection thresholds are exceeded, helping protect cables, busbars, feeders and connected equipment against damaging overload and short-circuit conditions.
The PR121/P-LSI release provides long-time protection against sustained overloads, short-time protection for coordinated short-circuit response and instantaneous protection against severe fault currents. Combined with its fixed construction, rear horizontal terminals and 2500 A rating, the 1SDA057659R1 provides dependable high-current protection for substantial industrial and commercial power distribution systems.
Typical Applications
- Industrial low-voltage power distribution systems.
- Main switchboards and distribution boards.
- Manufacturing plant electrical distribution.
- Commercial and infrastructure power systems.
- Protection of high-current feeders and busbar systems.
- Three-phase distribution installations requiring electronic LSI protection.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA057659R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame | E3H-A |
| Rated current | 2500 A |
| Number of poles | 3 |
| Trip unit | PR121/P-LSI R2500 |
| Release type | Electronic |
| Protection functions | Long-time, short-time and instantaneous (LSI) |
| Instantaneous release reference | 37,500 A |
| Mounting configuration | Fixed |
| Terminal arrangement | Rear horizontal |
| Auxiliary contacts | 4 |
| Position indication | Open / closed |
| Application configuration | UL |
| Product width | 404 mm |
| Product height | 418 mm |
| Product depth | 302 mm |
| Product net weight | 60 kg |
| Mechanical durability | 15,000 cycles |
| Electrical durability | 8,000 cycles |
| Power loss | 205 W per pole at rated operating conditions |
| EAN | 8015644599225 |
Frequently Asked Questions
What is the ABB 1SDA057659R1?
The ABB 1SDA057659R1 is an E3H-A SACE Emax three-pole fixed air circuit breaker rated at 2500 A and equipped with a PR121/P-LSI R2500 electronic overcurrent release.
What protection functions does the PR121/P-LSI release provide?
The PR121/P-LSI electronic release provides long-time, short-time and instantaneous overcurrent protection functions, collectively identified as LSI protection.
Is ABB 1SDA057659R1 fixed or withdrawable?
The 1SDA057659R1 is a fixed three-pole air circuit breaker with rear horizontal terminals for permanent installation within compatible low-voltage switchgear.
What is the instantaneous release reference of the ABB 1SDA057659R1?
The E3H-A 2500 PR121/P-LSI configuration has an instantaneous release reference of 37,500 A.
Does the ABB 1SDA057659R1 include auxiliary contacts?
Yes. The 1SDA057659R1 is fitted with four auxiliary contacts together with circuit-breaker open/closed position indication.
What are the dimensions and weight of the ABB 1SDA057659R1?
The circuit breaker measures approximately 404 mm wide, 418 mm high and 302 mm deep, with a net weight of 60 kg.
Trusted by Power Distribution Professionals Worldwide
ABB SACE Emax air circuit breakers are engineered for demanding low-voltage power distribution applications, combining robust switching performance, electronic circuit protection and practical integration into industrial and commercial switchboards.
