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1SDA057255R1 ABB E1B-A 1200 PR122/P-LSI 1200A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA057255R1 E1B-A 1200 PR122/P-LSI is a 1200 A three-pole fixed SACE Emax air circuit breaker with rear horizontal terminals and an R1200 PR122/P electronic release providing LSI overcurrent protection.
£7,240.56
Why Choose the ABB E1B-A 1200 PR122/P-LSI 1200A 3-Pole Fixed Air Circuit Breaker?
The ABB E1B-A 1200 PR122/P-LSI, order code 1SDA057255R1, is a SACE Emax air circuit breaker designed for dependable switching and protection in low-voltage power distribution systems. This E1B-A configuration combines a 1200 A rated current, three-pole construction and fixed execution with ABB's PR122/P electronic overcurrent protection technology.
The breaker is equipped with a PR122/P-LSI R1200 electronic overcurrent release, providing long-time, short-time and instantaneous protection functions. This LSI arrangement helps protect distribution circuits against sustained overloads and short-circuit faults while providing the short-time protection functionality required for coordination and selectivity in more complex distribution networks.
This configuration features fixed execution with rear horizontal terminals and is identified for UL applications. The R1200 release is matched to the 1200 A breaker rating, with an 18000 A instantaneous setting, while four auxiliary contacts and open/closed position indication support integration with switchgear monitoring and control systems.
Key Advantages
- 1200 A SACE Emax air circuit breaker for substantial low-voltage distribution duties.
- Three-pole construction suited to three-phase electrical distribution systems.
- PR122/P-LSI electronic release provides long-time, short-time and instantaneous overcurrent protection.
- Fixed execution with rear horizontal terminals for permanent switchboard installation.
- R1200 release with 18000 A instantaneous setting for this specific configuration.
- Fitted with four auxiliary contacts and circuit-breaker open/closed position indication.
Key Features
- ABB SACE Emax E1B-A series.
- 1200 A rated current.
- Three-pole configuration.
- Fixed circuit-breaker execution.
- Rear horizontal terminals.
- PR122/P electronic overcurrent release.
- LSI protection functions: long-time, short-time and instantaneous.
- R1200 release rating.
- 18000 A instantaneous setting.
- Four auxiliary contacts with open/closed circuit-breaker position indication.
Reliable LSI Protection for High-Current Power Distribution
The ABB SACE Emax E1B-A provides switching, isolation and electronic overcurrent protection for low-voltage distribution circuits. Its fixed three-pole construction with rear horizontal terminals is designed for permanent integration into compatible switchboards, providing a robust solution for substantial three-phase incomer and feeder duties.
The PR122/P-LSI electronic release provides long-time protection against sustained overload conditions, short-time protection for short-circuit faults and instantaneous protection against severe fault currents. The addition of short-time protection compared with an LI release supports greater flexibility when coordinating upstream and downstream protective devices in selective power distribution systems.
Typical Applications
- Main low-voltage electrical distribution switchboards.
- Industrial manufacturing and process plants.
- High-current incomer and feeder circuit protection.
- Transformer-fed low-voltage distribution systems.
- Commercial and infrastructure power distribution.
- Fixed three-phase switchgear requiring electronic LSI overcurrent protection.
Technical Specifications
| Series | SACE Emax E1B-A |
|---|---|
| ABB order code | 1SDA057255R1 |
| Product type | Air circuit breaker |
| Frame | E1 |
| Performance class | B-A |
| Rated current | 1200 A |
| Number of poles | 3 |
| Execution | Fixed |
| Terminal arrangement | Rear horizontal |
| Trip unit | PR122/P-LSI |
| Release type | Electronic overcurrent release |
| Protection functions | LSI – long-time, short-time and instantaneous |
| Release rating | R1200 |
| Instantaneous setting | 18000 A |
| Auxiliary contacts | 4 |
| Circuit-breaker position indication | Open / closed |
| Configuration | UL |
| Net weight | 40 kg |
| EAN | 8015644595180 |
| ABB product group | 310513-New Emax |
Frequently Asked Questions
What is the ABB 1SDA057255R1?
The ABB 1SDA057255R1 is an E1B-A 1200 SACE Emax three-pole fixed air circuit breaker rated at 1200 A, equipped with rear horizontal terminals and a PR122/P-LSI R1200 electronic overcurrent release.
What is the rated current of the E1B-A 1200 PR122/P-LSI?
The ABB E1B-A 1200 PR122/P-LSI has a rated current of 1200 A and uses an R1200-rated PR122/P electronic overcurrent release.
What protection functions does the PR122/P-LSI provide?
The PR122/P-LSI provides long-time overload protection, short-time short-circuit protection and instantaneous short-circuit protection.
How many poles does ABB 1SDA057255R1 have?
The ABB 1SDA057255R1 has a three-pole configuration suitable for three-phase low-voltage power distribution systems.
Is ABB 1SDA057255R1 fixed or withdrawable?
The ABB 1SDA057255R1 is a fixed air circuit breaker with rear horizontal terminals for permanent installation within compatible low-voltage switchgear.
What instantaneous setting is specified for ABB 1SDA057255R1?
This E1B-A 1200 PR122/P-LSI configuration is specified with an instantaneous setting of 18000 A and an R1200 electronic overcurrent release.
Trusted by Electrical Engineers Worldwide
ABB SACE Emax air circuit breakers are engineered for demanding low-voltage power distribution applications, combining dependable switching, advanced electronic protection and flexible switchgear configurations for industrial, commercial and infrastructure installations.
