Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA055960R1 ABB E2S 1250 PR121/P-LI 1250 A 4-Pole Air Circuit Breaker
ABB 1SDA055960R1 SACE Emax E2S 1250 is a 1250 A four-pole fixed air circuit breaker with rear horizontal terminals, a PR121/P-LI electronic overcurrent release, four auxiliary contacts and open/closed position indication.
£10,135.40
Why Choose the ABB 1SDA055960R1 E2S 1250 Air Circuit Breaker?
The ABB 1SDA055960R1 is a SACE Emax E2S 1250 air circuit breaker designed for high-current switching and electronic overcurrent protection in demanding low-voltage power distribution systems. This four-pole fixed circuit breaker has a rated current of 1250 A and is equipped with a PR121/P-LI R1250 electronic overcurrent release.
The PR121/P-LI release provides long-time overload and instantaneous short-circuit protection, helping safeguard distribution circuits, busbars, cables and connected equipment against sustained overcurrents and severe fault currents. The E2S performance class provides enhanced short-circuit capability within the SACE Emax E2 platform, making this breaker suitable for installations where substantial fault-current performance is required.
The 1SDA055960R1 is a four-pole fixed (F) circuit breaker with rear horizontal (HR) terminals for permanent installation within compatible low-voltage switchboards. It is fitted with four auxiliary contacts and open/closed position indication, supporting circuit-breaker status signalling and integration into electrical monitoring and control systems.
Key Advantages
- High-current 1250 A E2S air circuit breaker for demanding low-voltage distribution systems.
- PR121/P-LI R1250 electronic release provides long-time overload and instantaneous short-circuit protection.
- Four-pole configuration supports three-phase distribution systems requiring neutral switching.
- S performance level provides enhanced short-circuit capability within the Emax E2 platform.
- Fixed construction provides robust permanent integration into compatible low-voltage switchboards.
- Rear horizontal terminals support practical connection to switchboard busbar systems.
- Four auxiliary contacts support remote status signalling and control functions.
- Open/closed position indication provides clear circuit-breaker operating status.
Key Features
- ABB SACE Emax E2S 1250 air circuit breaker.
- 1250 A rated current.
- 4-pole configuration.
- PR121/P-LI R1250 electronic overcurrent release.
- LI functions provide long-time and instantaneous protection.
- Fixed (F) circuit-breaker configuration.
- Rear horizontal (HR) terminals.
- Designed for low-voltage AC power distribution.
- Four circuit-breaker auxiliary contacts.
- Open/closed circuit-breaker position indication.
- Four-pole switching supports three-phase plus neutral distribution arrangements.
- Part of ABB's established SACE Emax E2 air circuit breaker platform.
Reliable PR121/P-LI Protection for 1250 A Power Distribution
The ABB SACE Emax E2S 1250 provides dependable switching and electronic overcurrent protection for substantial low-voltage distribution circuits. Its PR121/P-LI release combines long-time protection against sustained overload conditions with instantaneous protection for rapid interruption of severe short-circuit currents, helping protect the electrical installation and connected equipment.
With its 1250 A rating, four-pole architecture and fixed construction, the 1SDA055960R1 is well suited to main incoming and high-current feeder duties in three-phase plus neutral systems. The rear horizontal terminal arrangement supports integration with suitable switchboard busbars, while the E2S platform provides the robust construction required for industrial, commercial and infrastructure power distribution.
Typical Applications
- Industrial low-voltage distribution switchboards.
- Main incoming circuit protection.
- Three-phase and neutral power distribution systems.
- High-current feeder protection.
- Power distribution centres and fixed switchgear assemblies.
- Manufacturing and process plants.
- Commercial and infrastructure electrical distribution.
- Distribution systems requiring electronic overload and instantaneous short-circuit protection.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA055960R1 |
| Extended product type | E2S1250PR121/P-LIIn=1250A4pFHR |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame | E2 |
| Performance level | S |
| Rated current (In) | 1250 A |
| Number of poles | 4 |
| Current type | AC |
| Release | PR121/P-LI R1250 |
| Release type | Electronic overcurrent release |
| Protection functions | LI – long-time and instantaneous |
| Long-time protection (L) | Overload protection |
| Instantaneous protection (I) | Instantaneous short-circuit protection |
| Installation | Fixed |
| Main terminal position | Rear |
| Terminal arrangement | Horizontal |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Net weight | 68 kg |
| EAN | 8015644573003 |
| HS code | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA055960R1?
The ABB 1SDA055960R1 is a SACE Emax E2S 1250 four-pole fixed air circuit breaker rated at 1250 A, with rear horizontal terminals and a PR121/P-LI R1250 electronic overcurrent release.
What protection release is fitted to the ABB 1SDA055960R1?
The 1SDA055960R1 is fitted with a PR121/P-LI R1250 electronic overcurrent release, providing long-time overload and instantaneous short-circuit protection.
What does LI protection mean?
LI denotes long-time and instantaneous protection. Long-time protection responds to sustained overload conditions, while instantaneous protection provides rapid circuit-breaker operation during severe short-circuit faults.
Is the ABB 1SDA055960R1 fixed or withdrawable?
The 1SDA055960R1 is a fixed four-pole air circuit breaker with rear horizontal terminals for permanent installation within a compatible low-voltage switchboard.
How many poles does the ABB 1SDA055960R1 have?
The ABB 1SDA055960R1 is a four-pole circuit breaker, making it suitable for three-phase distribution systems where switching of the neutral conductor is required.
Trusted ABB Protection for Critical Distribution Systems
ABB SACE Emax air circuit breakers provide robust switching and electronic protection for low-voltage power distribution, combining high-current capability, dependable PR121/P-LI protection and durable fixed switchboard integration for demanding industrial and infrastructure applications.
