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1SDA058291R1 ABB E2S 800 PR121/P-LSI 800 A 4-Pole Fixed Air Circuit Breaker
ABB 1SDA058291R1 is a four-pole fixed SACE Emax E2S 800 A air circuit breaker with horizontal rear terminals, a PR121/P-LSI R800 electronic overcurrent release, four auxiliary contacts and open/closed position indication.
£9,865.98
Why Choose the ABB E2S 800 PR121/P-LSI 800 A 4-Pole Air Circuit Breaker?
The ABB 1SDA058291R1 is a SACE Emax E2S 800 A four-pole fixed air circuit breaker designed for dependable protection and switching in low-voltage power distribution systems. It combines the E2S breaker platform with an ABB PR121/P-LSI electronic overcurrent release, providing configurable protection against overload and short-circuit conditions.
This version has a rated uninterrupted current of 800 A, a four-pole configuration and a fixed mounting arrangement with horizontal rear terminals. The E2S performance level provides a rated ultimate short-circuit breaking capacity of up to 85 kA at 415 V AC, making the breaker suitable for demanding industrial and commercial distribution applications.
ABB order code 1SDA058291R1 is supplied with a PR121/P-LSI R800 overcurrent release, four auxiliary contacts and circuit breaker open/closed position indication. The LSI protection functions provide Long-time, Short-time and Instantaneous protection, supporting coordinated protection of switchboards, feeders and other critical low-voltage circuits.
Key Advantages
- 800 A SACE Emax air circuit breaker for demanding low-voltage distribution systems.
- PR121/P-LSI electronic overcurrent release provides Long-time, Short-time and Instantaneous protection.
- High short-circuit performance with up to 85 kA Icu/Ics at 415 V AC.
- Four-pole construction enables switching and protection across four conductors.
- Fixed installation provides a robust solution for permanent switchboard applications.
- Horizontal rear terminals support practical busbar and switchgear connections.
- Supplied with four auxiliary contacts and open/closed breaker position indication.
Key Features
- ABB SACE Emax E2S air circuit breaker.
- 800 A rated uninterrupted current.
- Four-pole configuration.
- Fixed circuit breaker version.
- Horizontal rear terminals.
- PR121/P-LSI R800 electronic overcurrent release.
- Long-time (L) overload protection.
- Short-time (S) short-circuit protection and selective coordination.
- Instantaneous (I) short-circuit protection.
- Rated operational voltage up to 690 V AC.
- Rated insulation voltage of 1000 V.
- Rated impulse withstand voltage of 12 kV.
- Four auxiliary contacts and open/closed position indication.
High-Performance Protection for Low-Voltage Power Distribution
The ABB SACE Emax E2S platform is designed for high-current switching and circuit protection in low-voltage distribution systems. With an 85 kA short-circuit breaking capability at common industrial voltages and a rated operating voltage up to 690 V AC, the E2S 800 provides robust protection for switchboards, feeders, busbars and connected electrical equipment.
The integrated PR121/P-LSI electronic release monitors current conditions and provides Long-time protection against sustained overloads, Short-time protection for selective fault coordination and Instantaneous protection against severe short circuits. This combination enables the breaker to form part of a coordinated protection strategy in industrial and commercial electrical distribution networks.
Typical Applications
- Main incoming protection in low-voltage switchboards.
- Industrial power distribution systems.
- High-current feeder protection.
- Bus-section and bus-coupler applications.
- Manufacturing and process-industry electrical distribution.
- Commercial and infrastructure power distribution systems.
- Generator and transformer secondary distribution applications.
Technical Specifications
| Series | SACE Emax |
|---|---|
| Extended product type | E2S800PR121/P-LSIIn=800A4pFHR |
| ABB order code | 1SDA058291R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Rated uninterrupted current (Iu) | 800 A |
| Rated operational current (Ie) | 800 A |
| Number of poles | 4 |
| Installation | Fixed |
| Terminal arrangement | Horizontal rear terminals |
| Overcurrent release | PR121/P-LSI R800 |
| Protection functions | Long-time, Short-time, Instantaneous (LSI) |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) at 220–440 V AC | 85 kA |
| Rated ultimate short-circuit breaking capacity (Icu) at 500–690 V AC | 65 kA |
| Rated service short-circuit breaking capacity (Ics) at 220–440 V AC | 85 kA |
| Rated service short-circuit breaking capacity (Ics) at 500–690 V AC | 65 kA |
| Rated short-time withstand current (Icw), 1 s | 65 kA |
| Rated short-time withstand current (Icw), 3 s | 50 kA |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open/closed |
| EAN | 8015644605797 |
| Product weight | Approximately 68 kg |
Frequently Asked Questions
What is the ABB 1SDA058291R1?
The ABB 1SDA058291R1 is a SACE Emax E2S 800 A four-pole fixed air circuit breaker with horizontal rear terminals and a PR121/P-LSI R800 electronic overcurrent release.
What protection functions does the PR121/P-LSI release provide?
The PR121/P-LSI electronic release provides Long-time overload protection, Short-time short-circuit protection and Instantaneous short-circuit protection.
What is the short-circuit breaking capacity of ABB 1SDA058291R1?
The E2S breaker has a rated ultimate and service short-circuit breaking capacity of 85 kA at 220–440 V AC and 65 kA at 500–690 V AC.
Is ABB 1SDA058291R1 a fixed or draw-out circuit breaker?
The 1SDA058291R1 is a fixed four-pole circuit breaker equipped with horizontal rear terminals.
Does ABB 1SDA058291R1 include auxiliary contacts?
Yes. This E2S 800 configuration is supplied with four auxiliary contacts and circuit breaker open/closed position indication.
Trusted ABB SACE Emax Protection for Critical Power Systems
The ABB SACE Emax E2S 800 combines high short-circuit performance, four-pole switching and PR121/P-LSI electronic protection in a robust fixed air circuit breaker for demanding industrial and commercial low-voltage power distribution systems.
