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1SDA056120R1 ABB E3N2500 PR121/P-LI 2500A 4P Fixed Air Circuit Breaker
ABB 1SDA056120R1 SACE Emax E3N2500 four-pole fixed air circuit breaker with a 2500 A rating, PR121/P-LI electronic protection, rear horizontal terminals and 65 kA breaking capacity for demanding low-voltage power distribution.
£16,847.23
Why Choose the ABB E3N2500 PR121/P-LI 2500A 4P Fixed Air Circuit Breaker?
The ABB 1SDA056120R1 is a high-performance SACE Emax E3N air circuit breaker (ACB) designed for switching and protection in demanding low-voltage electrical distribution systems. Part of the ABB New Emax product group, this four-pole fixed circuit breaker combines a 2500 A rated uninterrupted current with the PR121/P-LI R2500 electronic overcurrent release for dependable protection of industrial, commercial and infrastructure power networks.
The E3N2500 provides long-time and instantaneous protection through its LI trip functionality. The PR121/P electronic release protects against overload and instantaneous short-circuit conditions, while the E3N platform provides robust short-circuit performance for high-current low-voltage distribution systems. This LI configuration does not incorporate short-time delayed or earth-fault protection.
With a rated uninterrupted current of 2500 A, a 690 V AC rated operational voltage and an ultimate short-circuit breaking capacity of 65 kA across its specified low-voltage operating range, the E3N2500 is suitable for main incomers, high-current feeders and distribution switchboards. This version features a four-pole fixed configuration with rear flat horizontal terminals for permanent integration into electrical switchgear.
Key Advantages
- High-performance ABB SACE Emax E3N air circuit breaker for demanding low-voltage power distribution.
- 2500 A rated uninterrupted current for high-current electrical installations.
- Four-pole fixed configuration suitable for three-phase systems requiring neutral switching.
- PR121/P-LI R2500 electronic overcurrent release for overload and instantaneous short-circuit protection.
- 65 kA Icu and Ics throughout the specified 220–690 V AC range.
- 65 kA short-time withstand current for both 1 s and 3 s.
- Rear flat horizontal terminals provide a practical connection arrangement for fixed switchboard installations.
- Four auxiliary contacts and open/closed position indication support switchgear control and status monitoring.
Key Features
- ABB SACE Emax E3N2500 air circuit breaker.
- 2500 A rated uninterrupted current.
- Four-pole construction.
- Fixed circuit-breaker configuration.
- PR121/P-LI R2500 electronic overcurrent release.
- Long-time and instantaneous (LI) protection functions.
- 690 V AC rated operational voltage.
- 65 kA Icu at 220–690 V AC.
- 65 kA Ics at 220–690 V AC.
- 65 kA Icw for 1 s and 3 s.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- Rear flat horizontal terminals.
- Four auxiliary contacts with circuit-breaker open/closed position indication.
Reliable High-Current Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB SACE Emax E3N2500 provide switching, isolation and overcurrent protection at critical points within high-current low-voltage distribution systems. The E3 frame accommodates substantial continuous currents, while the N performance level provides dependable short-circuit interruption for industrial switchboards, transformer-fed networks and other high-capacity distribution applications.
The PR121/P-LI electronic trip unit provides long-time overload and instantaneous short-circuit protection. Combined with the fixed Emax construction and 65 kA breaking performance, this configuration provides a robust solution for installations requiring straightforward electronic protection, high continuous-current capability and dependable fault interruption.
Typical Applications
- Main incoming circuit breakers in low-voltage switchboards.
- Industrial power distribution systems.
- Commercial and infrastructure electrical installations.
- Manufacturing and process plants.
- Transformer-fed distribution systems.
- Generator distribution and protection systems.
- High-current feeder protection.
- Four-pole distribution systems requiring neutral switching.
- Fixed low-voltage switchgear and power distribution assemblies.
Technical Specifications
| Series | SACE Emax |
|---|---|
| Product group | 310513-New Emax |
| ABB order code | 1SDA056120R1 |
| EAN | 8015644574604 |
| Customs tariff number | 85362090 |
| Product type | Air circuit breaker |
| Frame / size | E3 |
| Short-circuit performance level | N |
| Rated current (In) | 2500 A |
| Rated uninterrupted current (Iu) | 2500 A |
| Rated operational current (Ie) | 2500 A |
| Current type | AC |
| Number of poles | 4 |
| Installation | Fixed |
| Version | F |
| Terminal position | Rear |
| Terminal connection | Rear flat horizontal (HR) |
| Trip unit | PR121/P-LI R2500 |
| Release type | Electronic |
| Protection functions | Long-time and instantaneous (LI) |
| Integrated earth-fault protection | No |
| Overload release adjustment range | 1000–2500 A |
| Instantaneous short-circuit release adjustment range | 3750–37500 A |
| Rated operational voltage | 690 V AC |
| Rated voltage (Ur) | 690 V |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) at 220–690 V AC | 65 kA |
| Rated service short-circuit breaking capacity (Ics) at 220–690 V AC | 65 kA |
| Rated short-time withstand current (Icw), 1 s | 65 kA |
| Rated short-time withstand current (Icw), 3 s | 65 kA |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open/closed |
| Motor drive | Optional |
| Mechanical durability | 20,000 operating cycles |
| Maximum mechanical operating frequency | 60 cycles per hour |
| Electrical durability at ≤440 V | 8,000 operating cycles |
| Electrical durability at 500–690 V | 7,000 operating cycles |
| Maximum electrical operating frequency | 20 cycles per hour |
| Power loss | 205 W |
| Dimensions (W × H × D) | 530 × 418 × 302 mm |
| Net weight | 76 kg |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA056120R1 used for?
The ABB 1SDA056120R1 is an E3N2500 air circuit breaker designed for switching and protecting high-current low-voltage electrical distribution systems against overload and short-circuit conditions.
What is the rated current of the ABB E3N2500 1SDA056120R1?
This circuit breaker has a rated uninterrupted current of 2500 A, making it suitable for high-current industrial, commercial and infrastructure power distribution applications.
What protection does the PR121/P-LI trip unit provide?
The PR121/P-LI electronic overcurrent release provides long-time overload and instantaneous short-circuit protection. This LI version does not include short-time delayed or integrated earth-fault protection.
What is the breaking capacity of the ABB E3N2500?
The E3N2500 has a rated ultimate and service short-circuit breaking capacity of 65 kA across the specified 220–690 V AC operating range, with a rated short-time withstand current of 65 kA for 1 s and 3 s.
Is the ABB 1SDA056120R1 fixed or withdrawable?
The 1SDA056120R1 is a four-pole fixed air circuit breaker with rear flat horizontal terminals, designed for permanent installation within a suitable low-voltage switchboard or power distribution assembly.
Trusted Protection from ABB
ABB SACE Emax air circuit breakers provide dependable switching and protection for demanding low-voltage power distribution systems, combining high continuous-current capability, robust short-circuit performance and electronic overcurrent protection for industrial, commercial and infrastructure applications.
