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1SDA056858R1 ABB E4H4000 PR121/P-LSIG 4000A 4-Pole Fixed Air Circuit Breaker
ABB 1SDA056858R1 E4H4000 PR121/P-LSIG is a 4000 A four-pole fixed SACE Emax air circuit breaker with comprehensive LSIG electronic protection, rear horizontal terminals and high short-circuit performance for demanding low-voltage power distribution.
£34,486.94
Why Choose the ABB E4H4000 PR121/P-LSIG 4000A Air Circuit Breaker?
The ABB E4H4000 PR121/P-LSIG, order code 1SDA056858R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and protection in demanding high-current low-voltage electrical distribution systems. Part of the ABB SACE Emax E4H series, this four-pole fixed circuit breaker combines a 4000 A rated uninterrupted current with the PR121/P-LSIG R4000 electronic overcurrent release.
The PR121/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, feeders, cables and connected equipment in industrial, commercial and infrastructure power distribution networks.
The 1SDA056858R1 is a four-pole fixed circuit breaker with rear horizontal terminals. Its E4H performance level provides an ultimate short-circuit breaking capacity of 100 kA at 400–500 V AC and 85 kA at 690 V AC, making it suitable for high-capacity installations with substantial prospective fault currents.
Key Advantages
- High-performance ABB SACE Emax E4H air circuit breaker for demanding power distribution.
- 4000 A rated uninterrupted current for high-capacity electrical systems.
- Four-pole fixed construction for suitable three-phase and neutral distribution systems.
- PR121/P-LSIG R4000 electronic overcurrent release.
- LSIG functions provide long-time, short-time, instantaneous and ground-fault protection.
- 100 kA ultimate short-circuit breaking capacity at 400 V AC.
- Rear horizontal terminals support integration with high-current switchboard busbar systems.
Key Features
- ABB SACE Emax E4H series.
- 4000 A rated uninterrupted current.
- Four-pole construction.
- Fixed circuit-breaker execution.
- PR121/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.
- Rear horizontal main terminals.
- Four auxiliary contacts with circuit-breaker open/closed position indication.
Comprehensive High-Current Circuit Protection
ABB SACE Emax E4H air circuit breakers provide switching, isolation and electronic overcurrent protection for high-current low-voltage distribution systems. The E4H performance level offers high short-circuit interruption capability, helping protect major switchboards, busbars, feeders and connected equipment in installations where substantial prospective fault currents can occur.
The PR121/P-LSIG electronic release combines long-time overload, short-time, instantaneous and ground-fault protection. Together with the E4H4000 platform's 4000 A rating, four-pole configuration and high breaking capacity, it provides comprehensive protection for demanding 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.
- High-current feeder protection.
- Manufacturing and process plants.
- Utility and infrastructure distribution systems.
- Large commercial and critical electrical installations.
- Four-pole distribution systems requiring comprehensive LSIG protection.
Technical Specifications
| Series | SACE Emax E4H |
|---|---|
| ABB order code | 1SDA056858R1 |
| ABB product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Rated uninterrupted current (Iu) | 4000 A |
| Number of poles | 4 |
| Execution | Fixed |
| Main terminals | Rear horizontal |
| Protection release | PR121/P-LSIG R4000 |
| Release type | Electronic |
| Protection functions | Long-time, short-time, instantaneous and ground fault (LSIG) |
| Short-circuit performance level | H |
| Ultimate short-circuit breaking capacity (Icu) at 400 V AC | 100 kA |
| Ultimate short-circuit breaking capacity (Icu) at 415 V AC | 100 kA |
| Ultimate short-circuit breaking capacity (Icu) at 440 V AC | 100 kA |
| Ultimate short-circuit breaking capacity (Icu) at 500 V AC | 100 kA |
| Ultimate short-circuit breaking capacity (Icu) at 660 V AC | 85 kA |
| Ultimate short-circuit breaking capacity (Icu) at 690 V AC | 85 kA |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Net weight | 111 kg |
| EAN | 8015644581985 |
Frequently Asked Questions
What is the ABB 1SDA056858R1?
The ABB 1SDA056858R1 is a 4000 A four-pole fixed SACE Emax E4H air circuit breaker fitted with a PR121/P-LSIG R4000 electronic overcurrent release and rear horizontal terminals.
What protection functions does the PR121/P-LSIG provide?
The PR121/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 E4H4000 1SDA056858R1?
The E4H4000 circuit breaker has a rated uninterrupted current of 4000 A.
What is the breaking capacity of the ABB E4H4000?
The E4H4000 provides an ultimate short-circuit breaking capacity of 100 kA at 400–500 V AC and 85 kA at 690 V AC.
Is the ABB 1SDA056858R1 fixed or withdrawable?
The 1SDA056858R1 is a four-pole fixed air circuit breaker equipped with rear horizontal main terminals for permanent switchboard installation.
Trusted Protection for Industrial Power Distribution
ABB SACE Emax E4H circuit breakers combine high-current switching, high short-circuit performance and comprehensive electronic protection to support dependable operation in demanding industrial, commercial and infrastructure power distribution systems.
