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.
1SDA056656R1 ABB E3V2500 PR121/P-LI 2500 A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA056656R1 is a SACE Emax E3V 2500 A three-pole fixed air circuit breaker with rear horizontal terminals and a PR121/P-LI electronic overcurrent release for high-performance low-voltage power distribution protection.
£17,062.51
Why Choose the ABB 1SDA056656R1 E3V 2500 A Air Circuit Breaker?
The ABB 1SDA056656R1 is a high-performance SACE Emax E3V air circuit breaker (ACB) designed for switching and protection in demanding low-voltage electrical distribution systems. Identified as E3V2500 PR121/P-LI In=2500A 3P F HR, this three-pole fixed circuit breaker combines a 2500 A rated uninterrupted current with the ABB PR121/P-LI electronic overcurrent release.
As part of the ABB SACE Emax / New Emax range, the E3V2500 is engineered for industrial, commercial and infrastructure power distribution applications requiring high-current switching and dependable fault protection. The PR121/P-LI electronic trip unit provides long-time overload and instantaneous short-circuit protection, helping safeguard cables, busbars, transformers and connected equipment against damaging overcurrent conditions.
This version features a three-pole fixed construction with rear horizontal terminals for permanent installation within low-voltage switchboards. With its high-performance E3V frame, 2500 A current rating and robust electrical and mechanical endurance, the 1SDA056656R1 is well suited to demanding three-phase distribution systems where reliable circuit protection and high fault-current interruption capability are required.
Key Advantages
- High-performance 2500 A air circuit breaker for demanding low-voltage power distribution.
- PR121/P-LI electronic overcurrent release for overload and instantaneous short-circuit protection.
- Three-pole configuration for three-phase electrical distribution systems.
- Fixed mounting provides a robust solution for permanent switchboard installations.
- Rear horizontal terminals support practical switchboard busbar connections.
- Four auxiliary contacts support signalling, monitoring and control integration.
- Open/closed position indication provides clear circuit breaker status information.
- 20,000-cycle mechanical durability supports dependable operation over a long service life.
Key Features
- ABB SACE Emax E3V frame.
- 2500 A rated uninterrupted current.
- PR121/P-LI electronic trip unit.
- R2500 overcurrent release rating.
- Long-time and instantaneous (LI) protection.
- Three-pole configuration.
- Fixed mounting construction.
- Rear horizontal terminals.
- Four auxiliary contacts.
- Open/closed circuit breaker position indication.
- 20,000 mechanical operating cycles.
- Designed for demanding AC low-voltage distribution applications.
Reliable Circuit Protection for Power Distribution
Air circuit breakers such as the ABB E3V2500 provide switching and automatic protection for high-current low-voltage electrical distribution systems. The PR121/P electronic overcurrent release monitors circuit conditions and provides protection functions that help safeguard cables, busbars, transformers and downstream electrical equipment against damaging overload and short-circuit conditions.
The LI configuration combines long-time overload protection with instantaneous short-circuit protection. Together with the three-pole fixed construction, rear horizontal terminals and high-performance E3V frame, this makes the 1SDA056656R1 suitable for main distribution and feeder applications requiring robust protection, dependable switching and permanent switchboard installation.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Main incomer and high-current feeder protection.
- Three-phase power distribution circuits.
- Manufacturing and process plants.
- Commercial and infrastructure electrical systems.
- Transformer secondary distribution circuits.
- High-fault-level electrical installations.
- Fixed switchboard installations requiring high-current circuit protection.
- Distribution systems requiring electronic overload and instantaneous short-circuit protection.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| ABB product group | 310513-New Emax |
| Order code | 1SDA056656R1 |
| Product type | Air circuit breaker |
| Frame | E3V |
| Short-circuit performance level | V |
| Rated current | 2500 A |
| Rated uninterrupted current | 2500 A |
| Number of poles | 3 |
| Current type | AC |
| Trip unit | PR121/P-LI |
| Release rating | R2500 |
| Release type | Electronic overcurrent release |
| Protection functions | Long-time and instantaneous (LI) |
| Mounting type | Fixed |
| Terminal arrangement | Rear horizontal |
| Auxiliary contacts | 4 |
| Position indication | Open / closed |
| Mechanical durability | 20,000 cycles |
| Electrical durability | 8,000 cycles at up to 440 V AC; 7,000 cycles at 500–690 V AC |
| Product dimensions (W × H × D) | 404 × 418 × 302 mm |
| Net weight | 60 kg |
| HS code | 85362090 |
| EAN | 8015644579968 |
Frequently Asked Questions
What is the ABB 1SDA056656R1 used for?
The ABB 1SDA056656R1 is a 2500 A three-pole air circuit breaker used for switching and protecting high-current low-voltage electrical distribution systems in industrial, commercial and infrastructure installations.
What is the rated current of the ABB 1SDA056656R1?
The ABB 1SDA056656R1 has a rated uninterrupted current of 2500 A and uses the high-performance ABB SACE Emax E3V frame.
What protection functions does the PR121/P-LI trip unit provide?
The PR121/P-LI electronic overcurrent release provides long-time overload protection and instantaneous short-circuit protection.
Is the ABB 1SDA056656R1 fixed or withdrawable?
The ABB 1SDA056656R1 is a three-pole fixed air circuit breaker with rear horizontal terminals for permanent installation within a low-voltage switchboard.
Does the ABB 1SDA056656R1 include auxiliary contacts?
Yes. The ABB 1SDA056656R1 is fitted with four auxiliary contacts and provides open/closed position indication for circuit breaker status signalling and control integration.
Trusted for Industrial Power Distribution
ABB SACE Emax air circuit breakers are designed for dependable switching and protection of low-voltage power distribution systems, combining electronic overcurrent protection, robust operating endurance and proven fixed construction for demanding industrial, commercial and infrastructure installations.
