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1SDA056181R1 ABB E3S1250 PR122/P-LSIG 1250A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA056181R1 is a SACE Emax E3S1250 three-pole fixed air circuit breaker rated at 1250 A with rear horizontal terminals and a PR122/P-LSIG electronic overcurrent release for comprehensive low-voltage circuit protection.
£9,656.58
Why Choose the ABB E3S1250 PR122/P-LSIG 1250A 3-Pole Air Circuit Breaker?
The ABB E3S1250 PR122/P-LSIG, order code 1SDA056181R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and protection in high-current low-voltage electrical distribution systems. As part of the ABB SACE Emax E3 series, this three-pole fixed circuit breaker combines a 1250 A rated current with the advanced PR122/P-LSIG electronic overcurrent release.
The PR122/P-LSIG trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection. This comprehensive LSIG configuration helps protect electrical distribution equipment against overloads, short circuits and earth faults, making the breaker suitable for demanding industrial, commercial and infrastructure power distribution applications.
With a 1250 A rated current, three-pole configuration and fixed construction with rear horizontal terminals, the E3S1250 is well suited to main switchboards, distribution systems and high-current feeder applications. The E3S performance level provides an ultimate short-circuit breaking capacity of 75 kA at 400–415 V AC, while four auxiliary contacts provide circuit-breaker open/closed position indication.
Key Advantages
- High-performance ABB SACE Emax air circuit breaker for low-voltage power distribution.
- 1250 A rated current for demanding electrical distribution applications.
- Three-pole configuration for three-phase electrical systems.
- Advanced PR122/P-LSIG electronic overcurrent release.
- Comprehensive long-time, short-time, instantaneous and ground-fault protection.
- 75 kA ultimate short-circuit breaking capacity at 400–415 V AC.
- Fixed construction with rear horizontal terminals for switchboard integration.
- Four auxiliary contacts provide circuit-breaker open/closed position indication.
Key Features
- ABB SACE Emax E3S1250 air circuit breaker.
- 1250 A rated current.
- Three-pole (3P) configuration.
- PR122/P-LSIG electronic overcurrent release.
- Long-time overload protection (L).
- Short-time short-circuit protection (S).
- Instantaneous short-circuit protection (I).
- Ground-fault protection (G).
- Fixed (F) installation.
- Rear horizontal (HR) terminals.
- 75 kA ultimate short-circuit breaking capacity at 400–415 V AC.
- IP20 protection rating.
- Fitted with four auxiliary contacts and open/closed circuit-breaker position indication.
Advanced Circuit Protection for High-Current Power Distribution
Air circuit breakers such as the ABB SACE Emax E3S1250 provide switching, isolation and overcurrent protection for high-current low-voltage distribution circuits. The electronic trip unit monitors current conditions and initiates circuit-breaker operation when configured protection thresholds are exceeded, helping protect cables, switchgear and connected electrical equipment from damaging electrical faults.
The PR122/P-LSIG release gives the E3S1250 multiple levels of protection for effective coordination within electrical distribution systems. Long-time protection responds to sustained overloads, short-time and instantaneous functions provide protection against short circuits, and the ground-fault function provides additional protection against earth-fault conditions.
Typical Applications
- Main low-voltage electrical distribution switchboards.
- Industrial power distribution systems.
- Commercial and infrastructure electrical installations.
- Manufacturing and process facilities.
- High-current incomer and feeder protection.
- Transformer and generator distribution systems.
Technical Specifications
| Series | SACE Emax E3 |
|---|---|
| ABB order code | 1SDA056181R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame / performance level | E3S |
| Rated current | 1250 A |
| Number of poles | 3 |
| Version | Fixed |
| Terminal arrangement | Rear horizontal |
| Trip unit | PR122/P-LSIG |
| Release rating | R1250 |
| Release type | Electronic overcurrent release |
| Protection functions | LSIG |
| Long-time protection | L |
| Short-time protection | S |
| Instantaneous protection | I |
| Ground-fault protection | G |
| Current type | AC |
| Ultimate short-circuit breaking capacity at 400–415 V AC | 75 kA |
| Protection rating | IP20 |
| Overload release adjustment range | 400–1250 A |
| Short-time short-circuit release adjustment range | 750–12,500 A |
| Instantaneous short-circuit release adjustment range | 1875–18,750 A |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Net weight | approx. 60 kg |
| EAN | 8015644575212 |
| Customs tariff number | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA056181R1 used for?
The ABB 1SDA056181R1 is a SACE Emax E3S1250 air circuit breaker designed for switching and protecting high-current low-voltage electrical distribution circuits.
What is the rated current of the ABB E3S1250 PR122/P-LSIG?
The E3S1250 is rated at 1250 A for high-current low-voltage power distribution applications.
What protection functions does the PR122/P-LSIG trip unit provide?
The PR122/P-LSIG electronic overcurrent release provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and ground-fault (G) protection.
What is the breaking capacity of the ABB E3S1250?
The E3S performance level provides an ultimate short-circuit breaking capacity of 75 kA at 400–415 V AC, making it suitable for demanding low-voltage power distribution systems.
Is the ABB 1SDA056181R1 fixed or withdrawable?
The 1SDA056181R1 is a fixed three-pole air circuit breaker fitted with rear horizontal terminals for permanent integration into low-voltage switchboards and power distribution equipment.
Trusted for Critical Power Distribution
ABB SACE Emax air circuit breakers are designed for dependable protection and control of low-voltage electrical distribution systems, combining high-current switching capability with advanced electronic protection and monitoring for demanding industrial, commercial and infrastructure applications.
