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1SDA055757R1 ABB E1N1250 PR122/P-LSIG 1250 A 4-Pole Withdrawable Air Circuit Breaker
ABB 1SDA055757R1 SACE New Emax E1N1250 four-pole withdrawable air circuit breaker moving part with 1250 A rated current and PR122/P-LSIG electronic overload, short-circuit and earth-fault protection.
£11,537.09
Why Choose the ABB 1SDA055757R1 E1N1250 Air Circuit Breaker Moving Part?
The ABB 1SDA055757R1 is a high-performance SACE Emax E1N1250 air circuit breaker (ACB) moving part designed for reliable switching and protection in low-voltage electrical distribution systems. As part of the ABB New Emax series, this four-pole withdrawable breaker moving portion combines a rated current of 1250 A with the advanced PR122/P-LSIG electronic overcurrent release.
The PR122/P-LSIG trip unit provides comprehensive long-time (L), short-time (S), instantaneous (I) and earth-fault (G) protection. These electronic protection functions allow the circuit breaker to respond accurately to overloads, short circuits and earth faults while supporting selective coordination within demanding industrial and commercial power distribution systems.
The 1SDA055757R1 is configured as the moving part of a four-pole withdrawable E1N1250 circuit breaker. Its withdrawable construction provides operational flexibility and simplifies isolation, inspection and maintenance, making it well suited to switchboards and power distribution assemblies where service continuity and maintainability are important.
Key Advantages
- Genuine ABB SACE Emax E1N1250 withdrawable circuit breaker moving part.
- 1250 A rated current for high-current electrical distribution systems.
- Four-pole configuration for switching and protection of four conductors.
- Advanced PR122/P-LSIG electronic overcurrent release.
- Provides long-time, short-time, instantaneous and earth-fault protection.
- E1N performance level designed for demanding low-voltage distribution applications.
- Withdrawable construction supports convenient isolation, servicing and replacement.
Key Features
- ABB SACE New Emax E1N1250 series.
- 1250 A rated current.
- Four-pole withdrawable configuration.
- PR122/P-LSIG electronic trip unit.
- Long-time overload protection.
- Short-time short-circuit protection.
- Instantaneous short-circuit protection.
- Integrated earth-fault protection.
- Electronic protection settings for coordinated power distribution.
- Withdrawable moving-part construction for compatible E1 fixed parts.
- Designed for low-voltage industrial and commercial switchgear.
Reliable Circuit Protection for Power Distribution
Air circuit breakers such as the ABB SACE Emax E1N1250 provide switching, isolation and protection for high-current low-voltage distribution circuits. Electronic trip units continuously monitor electrical conditions and initiate circuit-breaker operation when configured overload, short-circuit or earth-fault thresholds are exceeded.
The PR122/P-LSIG release combines four key protection functions, enabling the breaker to protect conductors and connected equipment while supporting coordination with other protective devices in the distribution network. The withdrawable four-pole design also allows the breaker moving part to be isolated and removed from its compatible fixed portion, helping simplify inspection, servicing and replacement.
Typical Applications
- Industrial low-voltage switchboards and distribution systems.
- Withdrawable power distribution assemblies.
- Main incoming and feeder circuit protection.
- Manufacturing and process industry electrical systems.
- Commercial building power distribution.
- Infrastructure and utility electrical installations.
Technical Specifications
| Series | SACE New Emax E1N |
|---|---|
| Order code / MPN | 1SDA055757R1 |
| ABB product group | 310513-New Emax |
| Product type | Air circuit breaker moving part |
| Breaker frame | E1N1250 |
| Rated current | 1250 A |
| Number of poles | 4 |
| Trip unit | PR122/P-LSIG |
| Release technology | Electronic |
| Protection functions | L (long-time), S (short-time), I (instantaneous) and G (earth fault) |
| Earth-fault protection | Integrated |
| Performance level | N |
| Construction | Withdrawable |
| Installation | Moving part for compatible ABB E1 withdrawable fixed part |
Frequently Asked Questions
What is the ABB 1SDA055757R1 used for?
The ABB 1SDA055757R1 is a 1250 A four-pole withdrawable air circuit breaker moving part designed for switching and protecting low-voltage electrical distribution systems.
What protection functions does the ABB 1SDA055757R1 provide?
The fitted PR122/P-LSIG electronic trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.
What is the rated current of the ABB 1SDA055757R1?
The E1N1250 circuit breaker has a rated current of 1250 A.
How many poles does the ABB 1SDA055757R1 have?
The 1SDA055757R1 is a four-pole E1N1250 circuit breaker moving part, providing switching and protection across four conductors.
Is the ABB 1SDA055757R1 fixed or withdrawable?
The 1SDA055757R1 is a withdrawable circuit breaker moving part designed for use with the appropriate ABB E1 withdrawable fixed part in a compatible switchgear assembly.
Trusted by Electrical Professionals Worldwide
ABB SACE Emax air circuit breakers are designed for dependable switching and protection in demanding low-voltage power distribution systems, combining high-current performance, advanced electronic protection and flexible withdrawable switchgear integration.
