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1SDA056545R1 ABB E3V 800 PR121/P-LSI 800A 3P Withdrawable Air Circuit Breaker
ABB 1SDA056545R1 E3V 800 PR121/P-LSI is an 800 A three-pole withdrawable SACE Emax air circuit breaker with electronic LSI protection for demanding low-voltage power distribution systems.
£9,392.16
Why Choose the ABB E3V 800 PR121/P-LSI Air Circuit Breaker?
The ABB E3V 800 PR121/P-LSI, order code 1SDA056545R1, is a high-performance withdrawable air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the proven ABB SACE Emax E3 series, this three-pole breaker combines an 800 A rated current with the electronic PR121/P-LSI protection release.
The PR121/P-LSI trip unit provides long-time, short-time and instantaneous overcurrent protection, helping protect electrical installations against overload and short-circuit conditions. The E3V performance level provides high short-circuit capability for industrial switchboards, power distribution assemblies and infrastructure applications where dependable protection and service continuity are essential.
This version is configured as a 3-pole withdrawable breaker moving part (W MP) with a rated operational voltage up to 690 V AC. Its withdrawable construction facilitates inspection, maintenance and replacement within compatible Emax switchgear while minimising disruption to the surrounding installation.
Key Advantages
- High-performance ABB SACE Emax air circuit breaker for low-voltage distribution.
- 800 A rated current for substantial industrial and commercial loads.
- PR121/P-LSI electronic protection release for overload and short-circuit protection.
- 3-pole withdrawable moving-part configuration supports maintainable switchboard designs.
- Rated operational voltage up to 690 V AC.
- High short-circuit performance for demanding power distribution systems.
Key Features
- ABB SACE Emax E3V air circuit breaker.
- 800 A rated current.
- 3-pole configuration.
- PR121/P-LSI electronic trip unit.
- LSI protection functions: long-time, short-time and instantaneous.
- Withdrawable (W) moving part (MP) version.
- 690 V AC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- Designed in accordance with applicable IEC requirements.
Reliable Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB E3V provide switching and protection for high-current low-voltage distribution circuits. The electronic PR121/P-LSI release monitors current and initiates tripping when configured overload, short-time overcurrent or instantaneous short-circuit thresholds are exceeded.
The withdrawable Emax design is particularly suited to switchboards where serviceability and operational flexibility are important. The moving breaker section can be disconnected and withdrawn from its compatible fixed part, simplifying inspection and maintenance in industrial and commercial power distribution installations.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Generator and transformer distribution systems.
- Power control centres and switchgear assemblies.
Technical Specifications
| Series | SACE Emax E3 |
|---|---|
| Order code | 1SDA056545R1 |
| Product type | Air circuit breaker |
| Rated current (In) | 800 A |
| Number of poles | 3P |
| Release | PR121/P-LSI |
| Release type | Electronic |
| Protection functions | LSI – long-time, short-time and instantaneous |
| Version | Withdrawable (W), moving part (MP) |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated service short-circuit breaking capacity (Ics) at 400 V AC | 100 kA |
| Rated ultimate short-circuit breaking capacity (Icu) at 400 V AC | 130 kA |
| Rated short-time withstand current (Icw) | 85 kA for 1 s |
| Power loss | 36 W |
| Mechanical durability | 20,000 cycles |
| Dimensions (W × H × D) | 432 × 461 × 396.5 mm |
| Net weight | 64 kg |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA056545R1 used for?
It is an 800 A air circuit breaker used for switching and protecting low-voltage electrical distribution systems against overload and short-circuit conditions.
What protection release does this circuit breaker use?
The breaker uses an ABB PR121/P-LSI electronic release, providing long-time, short-time and instantaneous overcurrent protection functions.
How many poles does the ABB E3V 800 1SDA056545R1 have?
This version is a 3-pole air circuit breaker with a rated current of 800 A.
Is the ABB 1SDA056545R1 fixed or withdrawable?
The 1SDA056545R1 is a withdrawable moving-part (W MP) version designed for use with the corresponding Emax withdrawable switchgear arrangement.
What is the rated operational voltage of this breaker?
The ABB E3V 800 PR121/P-LSI has a rated operational voltage of up to 690 V AC.
Trusted ABB Power Distribution Protection
ABB SACE Emax air circuit breakers are engineered for dependable protection and switching in demanding low-voltage power distribution systems, combining electronic protection technology with robust, serviceable switchgear construction.
