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1SDA056791R1 ABB E4S4000 PR123/P-LSIG 4000A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA056791R1 E4S4000 PR123/P-LSIG is a 4000 A three-pole fixed SACE Emax air circuit breaker with advanced LSIG electronic protection and rear horizontal terminals for high-current low-voltage power distribution.
£32,074.45
Why Choose the ABB E4S4000 PR123/P-LSIG 4000A Air Circuit Breaker?
The ABB E4S4000 PR123/P-LSIG, order code 1SDA056791R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and protection in high-current low-voltage electrical distribution systems. Part of the proven ABB SACE Emax E4S series, this three-pole fixed circuit breaker combines a 4000 A rated uninterrupted current with the advanced PR123/P-LSIG R4000 electronic overcurrent release.
The PR123/P-LSIG electronic trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection. These LSIG functions provide comprehensive protection for switchboards, busbars, cables and connected equipment while supporting selective and coordinated protection in demanding industrial power distribution networks.
The E4S4000 is supplied in a three-pole fixed configuration with rear horizontal main terminals. Rated for operation at up to 690 V AC, it provides an ultimate short-circuit breaking capacity of 75 kA at 415 V AC and a rated short-time withstand current of 75 kA for 1 s, making it suitable for major industrial and infrastructure distribution systems.
Key Advantages
- High-performance ABB SACE Emax air circuit breaker for high-current power distribution.
- 4000 A rated uninterrupted current for demanding electrical installations.
- Three-pole fixed construction for three-phase distribution networks.
- PR123/P-LSIG R4000 electronic overcurrent release.
- LSIG functions provide overload, short-time, instantaneous and ground-fault protection.
- 75 kA ultimate short-circuit breaking capacity at 415 V AC.
- Rear horizontal terminals support efficient integration with switchboard busbar systems.
Key Features
- ABB SACE Emax E4S series.
- 4000 A rated uninterrupted current.
- Three-pole fixed construction.
- PR123/P-LSIG R4000 electronic trip unit.
- Long-time (L) overload protection.
- Short-time (S) short-circuit protection.
- Instantaneous (I) short-circuit protection.
- Ground-fault (G) protection.
- 690 V AC rated operational voltage.
- Rear horizontal main terminals.
- Fitted with four auxiliary contacts and circuit-breaker open/closed position indication.
Reliable Protection for High-Power Distribution Systems
Air circuit breakers such as the ABB SACE Emax E4S provide switching, isolation and electronic overcurrent protection for high-capacity low-voltage distribution systems. Their high current handling and short-circuit interruption capabilities help protect switchboards, busbars, cables and downstream equipment against potentially damaging electrical faults.
The PR123/P-LSIG electronic release combines long-time, short-time, instantaneous and ground-fault protection in an advanced trip unit. Together with the E4S4000 platform's 4000 A rating and fixed three-pole construction, this provides dependable protection for major industrial, commercial and infrastructure electrical distribution systems.
Typical Applications
- Main incoming protection in high-capacity low-voltage switchboards.
- Industrial power distribution systems.
- Transformer secondary protection.
- Generator and utility distribution circuits.
- High-current feeder protection.
- Manufacturing and process plants.
- Data centres and critical infrastructure.
- Large commercial and infrastructure electrical installations.
Technical Specifications
| Series | SACE Emax E4S |
|---|---|
| ABB order code | 1SDA056791R1 |
| Product type | Air circuit breaker |
| Rated uninterrupted current (Iu) | 4000 A |
| Rated operational current (Ie) | 4000 A |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Number of poles | 3 |
| Execution | Fixed |
| Main terminals | Rear horizontal |
| Protection release | PR123/P-LSIG R4000 |
| Release type | Electronic |
| Protection functions | Long-time, short-time, instantaneous and ground fault (LSIG) |
| Ultimate short-circuit breaking capacity (Icu) at 415 V AC | 75 kA |
| Rated short-time withstand current (Icw), 1 s | 75 kA |
| Power loss | 360 W |
| Mechanical durability | 15,000 cycles |
| Electrical durability at ≤440 V | 5,000 cycles |
| Electrical durability at 500–690 V | 4,000 cycles |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Dimensions (W × H × D) | 566 × 418 × 302 mm |
| Net weight | 81 kg |
| EAN | 8015644581312 |
Frequently Asked Questions
What is the ABB 1SDA056791R1 used for?
The ABB 1SDA056791R1 is a 4000 A three-pole fixed SACE Emax air circuit breaker designed for switching and protecting high-current low-voltage power distribution systems.
What protection functions does the PR123/P-LSIG provide?
The PR123/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection, represented by the LSIG designation.
What is the rated current of the ABB E4S4000 1SDA056791R1?
The circuit breaker has a rated uninterrupted current of 4000 A.
What is the breaking capacity of the ABB E4S4000?
The E4S4000 has an ultimate short-circuit breaking capacity of 75 kA at 415 V AC and a rated short-time withstand current of 75 kA for 1 s.
Is the ABB 1SDA056791R1 fixed or withdrawable?
The 1SDA056791R1 is a three-pole fixed circuit breaker equipped with rear horizontal main terminals for permanent switchboard installation.
Trusted Protection for Industrial Power Distribution
ABB SACE Emax air circuit breakers provide robust high-current switching and advanced electronic protection, supporting dependable operation and coordinated fault protection in demanding industrial, commercial and infrastructure power distribution systems.
