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1SDA059389R1 ABB E3S1000 PR121/P-LSI 1000A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA059389R1 E3S1000 is a 1000 A three-pole fixed SACE Emax air circuit breaker with rear horizontal terminals and a PR121/P-LSI R1000 electronic trip unit providing adjustable overload and short-circuit protection.
£8,309.96
Why Choose the ABB E3S1000 PR121/P-LSI 1000A 3-Pole Fixed Air Circuit Breaker?
The ABB E3S1000 PR121/P-LSI, order code 1SDA059389R1, is a high-performance 1000 A three-pole fixed air circuit breaker designed for switching and protecting demanding low-voltage power distribution systems. As part of the proven ABB SACE Emax E3S series, it combines robust high-current switching capability with electronic overcurrent protection for industrial, commercial and infrastructure switchgear.
This Emax circuit breaker is equipped with the PR121/P-LSI R1000 electronic trip unit, providing long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection. Its adjustable protection functions help safeguard cables, busbars, transformers, switchgear and connected equipment while supporting coordinated protection throughout the electrical distribution system.
With a rated uninterrupted current of 1000 A, a rated voltage of 690 V AC and a rated ultimate short-circuit breaking capacity of 75 kA at 400 V AC, the E3S1000 is engineered for demanding distribution duties. This model features a three-pole fixed construction with rear horizontal terminals and is fitted with four change-over auxiliary contacts plus circuit-breaker open/closed position indication.
Key Advantages
- Heavy-duty 1000 A air circuit breaker for low-voltage power distribution.
- Three-pole configuration for three-phase electrical systems.
- PR121/P-LSI R1000 electronic trip unit provides comprehensive LSI protection.
- 75 kA rated ultimate short-circuit breaking capacity at 400 V AC.
- Adjustable overload range from 400–1000 A.
- Adjustable short-time and instantaneous short-circuit protection.
- Fixed construction with rear horizontal terminals for permanent switchboard installation.
- Four change-over auxiliary contacts support signalling, monitoring and control.
- Part of the established ABB SACE Emax air circuit breaker platform.
Key Features
- ABB SACE Emax E3S air circuit breaker.
- 1000 A rated uninterrupted current.
- Three-pole construction.
- PR121/P-LSI R1000 electronic overcurrent release.
- Long-time overload protection (L).
- Short-time short-circuit protection (S).
- Instantaneous short-circuit protection (I).
- Fixed version with rear horizontal terminals (F HR).
- 690 V AC rated voltage.
- 75 kA Icu at 400 V AC, 50 Hz.
- Four change-over auxiliary contacts.
- Circuit-breaker open/closed position indication.
- Optional motor drive capability.
- No integrated earth-fault protection.
Reliable Circuit Protection for Power Distribution
Air circuit breakers such as the ABB SACE Emax E3S are designed to switch and protect high-current low-voltage distribution circuits. The PR121/P electronic trip unit monitors circuit current and initiates breaker operation when configured protection thresholds are exceeded, helping safeguard cables, busbars, transformers, switchgear and connected equipment against damaging overload and short-circuit conditions.
The PR121/P-LSI release combines long-time, short-time and instantaneous protection, enabling the breaker to respond to different types and magnitudes of overcurrent. Combined with the E3S frame, fixed three-pole construction and rear horizontal terminals, the E3S1000 is particularly well suited to main and feeder protection where dependable high-current operation and coordinated electronic protection are required.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Commercial building electrical distribution.
- Manufacturing and process plant switchgear.
- Transformer and feeder protection.
- High-current distribution panels.
- Power distribution and switchgear assemblies.
- Infrastructure and utility installations.
- Protection of busbars and high-current distribution circuits.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA059389R1 |
| EAN | 8015644617509 |
| Product group | 310513-New Emax |
| HS code | 85362090 |
| Product type | Air circuit breaker |
| Frame / subtype | E3S |
| Rated current (In) | 1000 A |
| Rated uninterrupted current (Iu) | 1000 A |
| Number of poles | 3 |
| Current type | AC |
| Rated voltage | 690 V AC |
| Trip unit | PR121/P-LSI R1000 |
| Release type | Electronic |
| Protection functions | L (long-time overload), S (short-time short-circuit) and I (instantaneous short-circuit) |
| Overload release adjustment range | 400–1000 A |
| Short-time short-circuit release adjustment range | 1000–10000 A |
| Instantaneous short-circuit release adjustment range | 1500–15000 A |
| Rated ultimate short-circuit breaking capacity (Icu) | 75 kA at 400 V AC, 50 Hz |
| Version | Fixed |
| Terminal arrangement | Rear horizontal terminals |
| Auxiliary contacts | 4 change-over contacts |
| Position indication | Circuit breaker open / closed |
| Motor drive | Optional |
| Integrated motor drive | No |
| Integrated earth-fault protection | No |
| Switched-off indication | Available |
| Net weight | 72 kg |
Frequently Asked Questions
What is the ABB 1SDA059389R1 used for?
The ABB 1SDA059389R1 is a 1000 A three-pole SACE Emax air circuit breaker designed for switching and protecting high-current low-voltage electrical distribution circuits.
What trip unit is fitted to the ABB E3S1000 1SDA059389R1?
This circuit breaker is equipped with the ABB PR121/P-LSI R1000 electronic trip unit, providing long-time overload, short-time short-circuit and instantaneous short-circuit protection.
What is the short-circuit breaking capacity of the ABB E3S1000?
The E3S1000 1SDA059389R1 has a rated ultimate short-circuit breaking capacity of 75 kA at 400 V AC, 50 Hz.
Is the ABB 1SDA059389R1 fixed or withdrawable?
The 1SDA059389R1 is a fixed three-pole air circuit breaker fitted with rear horizontal terminals for permanent installation in compatible SACE Emax low-voltage switchgear.
What does LSI protection mean on the ABB E3S1000?
LSI denotes long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection, providing coordinated electronic protection against overloads and short-circuit faults.
Trusted ABB Power Distribution Technology
ABB SACE Emax air circuit breakers are engineered for dependable low-voltage power distribution, combining robust high-current switching, adjustable electronic protection and practical switchgear integration for demanding industrial and commercial installations.
