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1SDA056762R1 ABB E3L2500 PR121/P-LSIG 2500 A 4-Pole Fixed Air Circuit Breaker
ABB 1SDA056762R1 E3L2500 is a 2500 A four-pole fixed SACE Emax air circuit breaker with rear flat horizontal terminals and a PR121/P-LSIG R2500 electronic release providing long-time, short-time, instantaneous and earth-fault protection.
£22,768.98
Why Choose the ABB E3L2500 PR121/P-LSIG Air Circuit Breaker?
The ABB E3L2500 PR121/P-LSIG, order code 1SDA056762R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and comprehensive protection in demanding low-voltage power-distribution systems. Part of the ABB SACE Emax E3 series, this four-pole fixed circuit breaker combines a 2500 A rated current with the PR121/P-LSIG R2500 electronic overcurrent release.
The PR121/P-LSIG release provides long-time, short-time, instantaneous and earth-fault protection. These LSIG functions help protect conductors, switchboards and downstream electrical equipment against sustained overloads, short circuits and earth faults, providing comprehensive protection for high-capacity industrial and infrastructure distribution networks.
This configuration is a four-pole fixed circuit breaker equipped with rear flat horizontal terminals. It supports operation at up to 690 V AC and provides a rated ultimate short-circuit breaking capacity of 130 kA at 400 V AC, while four auxiliary contacts and open/closed position indication support integration into switchboard signalling and control systems.
Key Advantages
- High-current 2500 A SACE Emax air circuit breaker for demanding power-distribution systems.
- PR121/P-LSIG R2500 electronic release provides comprehensive LSIG protection.
- Long-time, short-time, instantaneous and earth-fault protection covers a broad range of electrical fault conditions.
- Four-pole configuration supports three-phase systems requiring neutral switching and protection.
- Fixed construction with rear flat horizontal terminals supports permanent switchboard installation.
- 130 kA ultimate short-circuit breaking capacity at 400 V AC for high-fault-level installations.
- Four auxiliary contacts and open/closed position indication support monitoring and control functions.
Key Features
- ABB SACE Emax E3L2500 air circuit breaker.
- 2500 A rated uninterrupted current.
- Four-pole fixed version.
- PR121/P-LSIG R2500 electronic overcurrent release.
- L protection: long-time overload protection.
- S protection: short-time short-circuit protection.
- I protection: instantaneous short-circuit protection.
- G protection: earth-fault protection.
- 690 V AC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- Rear flat horizontal terminal arrangement.
- Four auxiliary contacts with open/closed position indication.
Reliable LSIG Protection for High-Current Power Distribution
The ABB SACE Emax E3L2500 is designed for switching and protection at main incomer and feeder levels within substantial low-voltage distribution systems. Its PR121/P-LSIG electronic release provides long-time protection against sustained overloads, short-time protection for coordinated fault clearing, instantaneous intervention against severe short circuits and earth-fault protection for faults involving current flowing to earth.
The combination of a 2500 A current rating, four-pole construction and comprehensive LSIG protection makes the 1SDA056762R1 particularly suitable for high-capacity industrial and commercial switchboards. Its fixed construction and rear flat horizontal terminals support permanent busbar integration, while the E3L performance level provides robust short-circuit interruption for installations with substantial prospective fault currents.
Typical Applications
- Main low-voltage distribution switchboards.
- Industrial power-distribution systems.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Transformer secondary and main incomer protection.
- High-current feeder and earth-fault protection.
- Power distribution and control assemblies.
Technical Specifications
| Series | SACE Emax E3 |
|---|---|
| ABB order code | 1SDA056762R1 |
| Product type | Air circuit breaker |
| Frame / subtype | E3 |
| Short-circuit performance level | L |
| Rated current (In) | 2500 A |
| Rated uninterrupted current (Iu) | 2500 A |
| Rated operational current (Ie) | 2500 A |
| Number of poles | 4P |
| Current type | AC |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Release | PR121/P-LSIG R2500 |
| Release type | Electronic |
| Protection functions | LSIG — long-time, short-time, instantaneous and earth-fault |
| Version | Fixed |
| Terminal connection | Rear flat horizontal |
| Rated ultimate short-circuit breaking capacity (Icu) at 380–415 V AC | 130 kA |
| Rated ultimate short-circuit breaking capacity (Icu) at 440 V AC | 110 kA |
| Rated ultimate short-circuit breaking capacity (Icu) at 500 V AC | 85 kA |
| Rated ultimate short-circuit breaking capacity (Icu) at 660–690 V AC | 85 kA |
| Rated service short-circuit breaking capacity (Ics) at 380–415 V AC | 130 kA |
| Rated service short-circuit breaking capacity (Ics) at 440 V AC | 110 kA |
| Rated service short-circuit breaking capacity (Ics) at 500–690 V AC | 65 kA |
| Rated short-time withstand current (Icw) | 15 kA for 1 s |
| Power loss | 335 W |
| Electrical durability at Ue ≤ 440 V | 1800 cycles |
| Electrical durability at Ue 500–690 V | 1300 cycles |
| Electrical operating frequency | 20 cycles per hour |
| Mechanical durability | 15,000 cycles |
| Mechanical operating frequency | 60 cycles per hour |
| Auxiliary contacts | 4 |
| Position indication | Open / closed |
| Product net weight | 90 kg |
| EAN | 8015644581022 |
| HS code | 85362090 |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA056762R1 used for?
The ABB 1SDA056762R1 is a 2500 A four-pole SACE Emax air circuit breaker designed for switching and comprehensive overcurrent and earth-fault protection in high-current low-voltage power-distribution systems.
What protection release is fitted to the ABB E3L2500?
This circuit breaker is fitted with the ABB PR121/P-LSIG R2500 electronic overcurrent release, providing long-time, short-time, instantaneous and earth-fault protection.
What is the rated current of the ABB E3L2500 PR121/P-LSIG?
The circuit breaker has a rated uninterrupted current of 2500 A.
Is the ABB 1SDA056762R1 fixed or withdrawable?
The 1SDA056762R1 is a four-pole fixed circuit breaker equipped with rear flat horizontal terminals for permanent installation within a low-voltage switchboard.
What does LSIG mean on the PR121/P release?
LSIG denotes long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection, providing comprehensive electronic protection against a range of electrical fault conditions.
Trusted Protection for Industrial Power Systems
ABB SACE Emax air circuit breakers provide dependable switching and electronic protection for demanding low-voltage distribution systems, combining high current capability, robust short-circuit performance and comprehensive LSIG protection for critical electrical infrastructure.
