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1SDA055952R1 ABB E2S1250 PR121/P-LI 1250A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA055952R1 E2S1250 is a 1250 A three-pole fixed SACE Emax air circuit breaker with a PR121/P-LI R1250 electronic overcurrent release, rear horizontal terminals, four auxiliary contacts and open/closed position indication.
£7,823.87
Why Choose the ABB E2S1250 PR121/P-LI 1250A 3-Pole Fixed Air Circuit Breaker?
The ABB 1SDA055952R1 is a SACE Emax E2S air circuit breaker (ACB) designed for switching and protection in demanding low-voltage electrical distribution systems. Rated at 1250 A, this three-pole fixed circuit breaker is equipped with the PR121/P-LI R1250 electronic overcurrent release for dependable overload and instantaneous short-circuit protection.
As part of the ABB SACE Emax / New Emax range, the E2S1250 combines high-current switching capability with electronic circuit protection for industrial, commercial and infrastructure power distribution. The PR121/P-LI release provides long-time and instantaneous protection functions, helping protect cables, busbars, transformers and connected electrical equipment against sustained overloads and severe short-circuit currents.
The E2S1250 PR121/P-LI is a three-pole fixed circuit breaker with rear horizontal terminals and a rated current of 1250 A. Its fixed construction provides robust integration into compatible low-voltage switchboards, while four auxiliary contacts and open/closed position indication support circuit-breaker status monitoring.
Key Advantages
- High-capacity 1250 A SACE Emax air circuit breaker.
- Three-pole configuration for three-phase electrical distribution systems.
- Electronic PR121/P-LI R1250 overcurrent release.
- LI protection provides long-time overload and instantaneous short-circuit protection.
- Fixed construction for permanent integration into low-voltage switchboards.
- Rear horizontal terminals provide a practical switchboard connection arrangement.
- Supplied with four auxiliary contacts.
- Open/closed position indication supports operational monitoring.
Key Features
- ABB SACE Emax E2S1250 air circuit breaker.
- 1250 A rated current.
- Three-pole configuration.
- Fixed circuit-breaker construction.
- Rear horizontal (HR) terminals.
- PR121/P-LI R1250 electronic overcurrent release.
- Long-time and instantaneous LI protection functions.
- Four auxiliary contacts fitted.
- Circuit-breaker open/closed position indication.
- Designed for high-current low-voltage power distribution applications.
Reliable Electronic Circuit Protection for High-Current Distribution
Air circuit breakers such as the ABB E2S1250 provide switching, isolation and protection for high-current low-voltage distribution circuits. The three-pole arrangement is designed for three-phase applications, while the fixed construction and rear horizontal terminals provide a robust installation format for permanent integration into compatible switchboard assemblies.
The PR121/P-LI electronic release provides long-time protection against sustained overload conditions and instantaneous protection against severe short-circuit currents. This combination makes the 1SDA055952R1 suitable for applications requiring straightforward electronic overcurrent protection without the additional short-time or ground-fault functions associated with LSI and LSIG trip-unit configurations.
Typical Applications
- Industrial low-voltage switchboards and distribution panels.
- Three-phase electrical distribution systems.
- Main incoming circuit protection.
- High-current feeder protection.
- Busbar and distribution-board applications.
- Transformer secondary distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure power distribution installations.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| ABB order code | 1SDA055952R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker (ACB) |
| Frame | E2S |
| Rated current (In) | 1250 A |
| Number of poles | 3 |
| Current type | AC |
| Installation | Fixed |
| Main terminals | Rear horizontal (HR) |
| Trip unit | PR121/P-LI R1250 |
| Release type | Electronic overcurrent release |
| Protection functions | Long-time and instantaneous (LI) |
| Ground-fault protection | Not included in LI configuration |
| Auxiliary contacts | 4 |
| Position indication | Open / closed |
| Weight | 55 kg |
| EAN | 8015644572921 |
Frequently Asked Questions
What is the ABB 1SDA055952R1 used for?
The ABB 1SDA055952R1 is a 1250 A three-pole fixed SACE Emax air circuit breaker used for switching and protecting high-current low-voltage three-phase electrical distribution circuits.
What current rating does the ABB E2S1250 1SDA055952R1 have?
The circuit breaker has a rated current of 1250 A.
What protection unit is fitted to the ABB 1SDA055952R1?
The breaker is fitted with an ABB PR121/P-LI R1250 electronic overcurrent release, providing long-time overload and instantaneous short-circuit protection.
What terminal arrangement does the ABB 1SDA055952R1 use?
The 1SDA055952R1 is supplied with rear horizontal terminals, identified by the HR designation in the ABB product configuration.
Is the ABB 1SDA055952R1 fixed or withdrawable?
The 1SDA055952R1 is a three-pole fixed air circuit breaker designed for permanent installation in a compatible low-voltage switchboard.
Trusted ABB Power Distribution Technology
ABB SACE Emax air circuit breakers are designed for dependable switching and protection in demanding low-voltage power distribution systems, combining high-current capability, electronic overcurrent protection and robust switchboard integration.
