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1SDA055652R1 ABB E1B 1250 PR122/P-LSI 1250A 3-Pole Withdrawable Air Circuit Breaker
ABB 1SDA055652R1 SACE Emax E1B 1250 is a 1250 A three-pole withdrawable air circuit breaker moving part with a PR122/P-LSI R1250 electronic overcurrent release, four auxiliary contacts and open/closed position indication for low-voltage power distribution.
£8,433.98
Why Choose the ABB E1B 1250 PR122/P-LSI 1250A Air Circuit Breaker?
The ABB E1B 1250 PR122/P-LSI, order code 1SDA055652R1, is a high-performance 1250 A three-pole withdrawable air circuit breaker moving part designed for protection and switching in low-voltage electrical distribution systems. As part of the established ABB SACE Emax series, it combines robust circuit-breaking performance with the advanced PR122/P-LSI electronic overcurrent release for dependable protection of industrial power networks.
This E1B circuit breaker is supplied as the withdrawable moving part for use with a compatible SACE Emax fixed part or cradle, supporting convenient isolation, inspection and maintenance. The PR122/P-LSI R1250 electronic trip unit provides long-time, short-time and instantaneous protection functions, helping protect electrical installations against sustained overloads and short-circuit faults.
With a rated current of 1250 A and a three-pole configuration, the E1B 1250 is engineered for demanding three-phase industrial distribution applications. The moving part is also fitted with four auxiliary contacts and open/closed position indication, supporting integration with switchboard control, signalling and monitoring systems.
Key Advantages
- High-current 1250 A air circuit breaker moving part for low-voltage power distribution.
- PR122/P-LSI electronic trip unit provides advanced electronic overcurrent protection.
- LSI protection functions cover long-time overload, short-time and instantaneous short-circuit conditions.
- Three-pole configuration designed for three-phase electrical distribution systems.
- Withdrawable construction supports efficient isolation, inspection and maintenance.
- Moving-part format enables use with the appropriate SACE Emax fixed part or cradle.
- Four auxiliary contacts support circuit-breaker status signalling.
- Open/closed position indication supports switchboard monitoring and control.
Key Features
- ABB SACE Emax E1B series.
- 1250 A rated current.
- Three-pole configuration.
- PR122/P-LSI R1250 electronic overcurrent release.
- Long-time (L) overload protection.
- Short-time (S) short-circuit protection.
- Instantaneous (I) short-circuit protection.
- Advanced electronic protection and monitoring capabilities.
- Withdrawable moving-part construction.
- Four auxiliary contacts.
- Circuit-breaker open/closed position indication.
- Designed for demanding industrial low-voltage distribution systems.
Advanced Protection for Low-Voltage Distribution Systems
Air circuit breakers such as the ABB SACE Emax E1B protect high-current electrical distribution systems by detecting and interrupting abnormal current conditions before cables, switchgear and connected equipment can be damaged. The E1B 1250 combines substantial current-carrying capability with electronic protection, making it suitable for main distribution and feeder duties in demanding industrial installations.
The PR122/P-LSI electronic release combines long-time overload, short-time short-circuit and instantaneous short-circuit protection in a single trip unit. These functions support coordinated protection of low-voltage networks, while the withdrawable construction allows the breaker moving part to be isolated and removed from its compatible fixed part for servicing or replacement.
Typical Applications
- Industrial low-voltage distribution switchboards.
- Main incoming and feeder circuit protection.
- Manufacturing plants and production facilities.
- Commercial and infrastructure electrical distribution systems.
- Motor control centres and industrial power systems.
- Generator and transformer distribution installations.
- High-current three-phase distribution systems.
- Switchboards requiring withdrawable circuit-breaker construction.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| ABB order code | 1SDA055652R1 |
| Product type | Air circuit breaker moving part |
| Frame / sub-type | E1B 1250 |
| Performance level | B |
| Rated current (In) | 1250 A |
| Number of poles | 3 |
| Trip unit | PR122/P-LSI R1250 |
| Release type | Electronic overcurrent release |
| Protection functions | L, S and I |
| Long-time protection | Overload protection |
| Short-time protection | Delayed short-circuit protection |
| Instantaneous protection | Short-circuit protection |
| Execution | Withdrawable |
| Component | Moving part (MP) |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Weight | approx. 55 kg |
| EAN | 8015644569921 |
Frequently Asked Questions
What is the ABB 1SDA055652R1 used for?
The ABB 1SDA055652R1 is a 1250 A three-pole SACE Emax air circuit breaker moving part used for switching and protecting high-current low-voltage industrial and commercial electrical distribution systems.
What protection functions does the PR122/P-LSI trip unit provide?
The PR122/P-LSI electronic trip unit provides long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection.
What is the rated current of the ABB E1B 1250?
The ABB E1B 1250 has a rated current of 1250 A, and this version uses a three-pole configuration.
Is the ABB 1SDA055652R1 fixed or withdrawable?
The 1SDA055652R1 is the withdrawable moving part of an ABB SACE Emax E1B circuit breaker and is designed for use with the appropriate compatible fixed part or cradle.
Does the ABB 1SDA055652R1 include auxiliary contacts?
Yes. The moving part is fitted with four auxiliary contacts and provides circuit-breaker open/closed position indication for signalling and monitoring applications.
Trusted by Industrial Power Professionals Worldwide
ABB SACE Emax air circuit breakers are widely used in low-voltage distribution systems where dependable high-current switching, advanced electronic protection and service-friendly withdrawable construction are required.
