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1SDA056288R1 ABB E3S 2500 PR121/P-LI 2500A 3P Withdrawable Air Circuit Breaker
ABB 1SDA056288R1 E3S 2500 three-pole withdrawable air circuit breaker moving part rated at 2500 A with a PR121/P-LI electronic trip unit providing overload and instantaneous short-circuit protection for low-voltage power distribution.
£14,972.80
Why Choose the ABB E3S 2500 PR121/P-LI 2500A 3P Withdrawable Air Circuit Breaker?
The ABB 1SDA056288R1 is a high-performance SACE Emax E3S air circuit breaker moving part designed for switching and protection in high-current low-voltage power distribution systems. Rated at 2500 A, this three-pole withdrawable circuit breaker incorporates an ABB PR121/P-LI electronic overcurrent release for dependable overload and instantaneous short-circuit protection.
Part of the proven ABB SACE Emax E3 series, the E3S 2500 combines substantial current-handling capability with an S short-circuit performance level. It provides a rated ultimate and service short-circuit breaking capacity of 75 kA at 400 V AC and is designed for operation in AC distribution systems up to 690 V AC.
The PR121/P-LI release provides long-time overload (L) and instantaneous short-circuit (I) protection. This version is supplied as a three-pole withdrawable moving part for use with the corresponding Emax E3 fixed part and is fitted with four auxiliary change-over contacts plus circuit-breaker open/closed position indication.
Key Advantages
- High-current 2500 A SACE Emax air circuit breaker for industrial power distribution.
- Three-pole configuration for three-phase AC distribution systems.
- PR121/P-LI electronic trip unit provides overload and instantaneous short-circuit protection.
- 75 kA ultimate and service short-circuit breaking capacity at 400 V AC.
- Rated for operation at up to 690 V AC.
- Withdrawable construction supports efficient inspection, servicing and replacement.
- Four auxiliary change-over contacts support switchboard monitoring and control.
Key Features
- ABB SACE Emax E3S 2500 air circuit breaker moving part.
- 2500 A rated uninterrupted current.
- Three-pole configuration.
- PR121/P-LI electronic overcurrent release.
- LI protection: long-time overload and instantaneous short-circuit functions.
- 690 V AC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 75 kA rated ultimate short-circuit breaking capacity at 400 V AC.
- 75 kA rated service short-circuit breaking capacity at 400 V AC.
- 75 kA short-time withstand current for 1 s.
- Withdrawable construction for use with a compatible Emax E3 fixed part.
Reliable LI Protection for High-Current Distribution
Air circuit breakers such as the ABB E3S 2500 provide switching, isolation and automatic protection for high-current low-voltage distribution circuits. The electronic release monitors circuit current and commands the breaker to open when configured protection thresholds are exceeded, helping protect conductors, switchgear and connected electrical equipment.
The PR121/P-LI release combines long-time overload protection with instantaneous short-circuit protection for straightforward and dependable circuit protection. Combined with the E3S breaker's 75 kA short-circuit capability and withdrawable construction, the 1SDA056288R1 is well suited to switchboards requiring high-current protection together with convenient maintenance and breaker replacement.
Typical Applications
- Main incoming protection in low-voltage switchboards.
- Industrial power distribution systems.
- High-current feeder and distribution circuits.
- Manufacturing and process plant electrical systems.
- Commercial and infrastructure power distribution.
- Transformer and generator distribution switchboards.
- Withdrawable switchgear requiring service-friendly circuit protection.
Technical Specifications
| Series | SACE Emax E3 |
|---|---|
| ABB order code | 1SDA056288R1 |
| Product type | Air circuit breaker moving part |
| Frame | E3 |
| Short-circuit performance level | S |
| Rated current (In) | 2500 A |
| Rated uninterrupted current (Iu) | 2500 A |
| Rated operational current (Ie) | 2500 A |
| Number of poles | 3 |
| Current type | AC |
| Trip unit | PR121/P-LI |
| Release type | Electronic |
| Protection functions | LI – long-time overload and instantaneous short-circuit |
| Overload release adjustment range | 1000–2500 A |
| Instantaneous short-circuit adjustment range | 3750–37,500 A |
| 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 400 V AC | 75 kA |
| Rated service short-circuit breaking capacity (Ics) at 400 V AC | 75 kA |
| Rated short-time withstand current (Icw), 1 s | 75 kA |
| Rated short-time withstand current (Icw), 3 s | 65 kA |
| Power loss | 350 W |
| Construction | Withdrawable moving part |
| Auxiliary contacts | 4 change-over contacts |
| Position indication | Open / closed |
| Electrical durability at ≤440 V | 8000 cycles |
| Electrical durability at 500–690 V | 7000 cycles |
| Mechanical durability | 20,000 cycles |
| Net weight | 64 kg |
| Standard | IEC |
| EAN | 8015644576288 |
| Product group | 310513-New Emax |
Frequently Asked Questions
What is the ABB 1SDA056288R1?
The ABB 1SDA056288R1 is a SACE Emax E3S 2500 three-pole withdrawable air circuit breaker moving part rated at 2500 A and equipped with a PR121/P-LI electronic overcurrent release.
What protection functions does the PR121/P-LI provide?
The PR121/P-LI provides long-time overload (L) and instantaneous short-circuit (I) protection functions.
What is the current rating of the ABB E3S 2500 1SDA056288R1?
The circuit breaker has a rated uninterrupted current of 2500 A.
What is the breaking capacity of the ABB E3S 2500?
The E3S 2500 has a rated ultimate and service short-circuit breaking capacity of 75 kA at 400 V AC.
Is the ABB 1SDA056288R1 fixed or withdrawable?
The 1SDA056288R1 is a withdrawable moving part designed for use with the corresponding ABB SACE Emax E3 fixed part, allowing the breaker to be removed for servicing or replacement.
Trusted ABB Protection for Critical Power Systems
ABB SACE Emax air circuit breakers provide dependable high-current switching and protection for demanding low-voltage distribution systems, combining electronic protection, robust short-circuit performance and service-friendly withdrawable construction.
