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1SDA056445R1 ABB E3H2000 PR122/P-LSIG 2000 A 4-Pole Fixed Air Circuit Breaker
ABB 1SDA056445R1 E3H2000 is a 2000 A four-pole fixed SACE Emax air circuit breaker with a PR122/P-LSIG electronic overcurrent release, LSIG protection, rear horizontal terminals and up to 100 kA ultimate short-circuit breaking capacity for demanding low-voltage power distribution.
£17,140.37
Why Choose the ABB 1SDA056445R1 E3H2000 Air Circuit Breaker?
The ABB 1SDA056445R1 is a high-performance SACE Emax E3H air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the ABB New Emax E3 series, this four-pole fixed circuit breaker combines a 2000 A rated current with the PR122/P-LSIG electronic overcurrent release for comprehensive protection of industrial, commercial and infrastructure power installations.
The E3H2000 is equipped with ABB's PR122/P-LSIG R2000 electronic trip unit, providing long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection. This LSIG configuration provides comprehensive electronic protection against overloads, short circuits and earth faults, while supporting selective coordination within complex low-voltage distribution systems.
With a 2000 A rated uninterrupted current, four-pole fixed construction and rear flat horizontal terminals, the 1SDA056445R1 is engineered for permanent integration into high-current switchboards. The E3H performance level provides an ultimate short-circuit breaking capacity of 100 kA from 220–500 V AC and 85 kA at 660–690 V AC, making the breaker suitable for installations with substantial prospective fault currents.
Key Advantages
- High-performance ABB SACE Emax E3H air circuit breaker for demanding low-voltage power distribution.
- 2000 A rated uninterrupted current for high-current industrial, commercial and infrastructure applications.
- PR122/P-LSIG electronic overcurrent release provides comprehensive electronic circuit protection.
- LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
- Four-pole construction supports three-phase systems requiring neutral switching.
- Ultimate short-circuit breaking capacity of up to 100 kA for high-fault-level installations.
- Fixed mounting with rear flat horizontal terminals supports permanent switchboard integration.
- Four auxiliary changeover contacts with open/closed position indication support circuit-breaker monitoring and control.
Key Features
- ABB SACE Emax E3H2000 series air circuit breaker.
- 2000 A rated uninterrupted current.
- Four-pole configuration.
- Fixed circuit-breaker version.
- Rear flat horizontal terminals.
- PR122/P-LSIG R2000 electronic overcurrent release.
- LSIG protection covering long-time, short-time, instantaneous and ground-fault functions.
- Rated operational voltage of 690 V AC.
- Rated insulation voltage of 1000 V.
- Rated impulse withstand voltage of 12 kV.
- Ultimate short-circuit breaking capacity of up to 100 kA.
- Rated short-time withstand current of 75 kA for 1 s.
Advanced Protection for High-Current Power Distribution
Air circuit breakers such as the ABB E3H2000 provide switching, isolation and protection for high-current low-voltage distribution systems. The electronic trip unit monitors current conditions and enables the breaker to interrupt overload, short-circuit and ground-fault conditions, helping protect busbars, cables, transformers and connected electrical equipment from potentially damaging fault currents.
The integrated PR122/P-LSIG electronic trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection. Combined with the E3H breaker's 2000 A current rating, four-pole construction, ultimate breaking capacity of up to 100 kA and fixed configuration, the 1SDA056445R1 is particularly suited to main distribution circuits requiring comprehensive electronic protection, selective coordination and high fault-clearing performance.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Manufacturing and process plants.
- Commercial and large-building electrical distribution.
- Main incomer and high-current feeder protection.
- Three-phase four-wire electrical distribution systems.
- Generator and transformer distribution circuits.
- Installations requiring integrated ground-fault protection.
- Power control centres and fixed switchgear assemblies.
Technical Specifications
| Product group | 310513-New Emax |
|---|---|
| Series | SACE Emax / New Emax E3 |
| ABB order code | 1SDA056445R1 |
| EAN | 8015644577858 |
| Product type | Air circuit breaker |
| Frame / performance type | E3H |
| Short-circuit performance level | H |
| Rated current (In) | 2000 A |
| Rated operational current (Ie) | 2000 A |
| Rated uninterrupted current (Iu) | 2000 A |
| Number of poles | 4 |
| Mounting version | Fixed |
| Terminal arrangement | Rear flat horizontal terminals |
| Trip unit | PR122/P-LSIG R2000 electronic overcurrent release |
| Release type | Electronic |
| Protection functions | LSIG – long-time, short-time, instantaneous and ground fault |
| Overload release setting range | 800–2000 A |
| Instantaneous short-circuit setting range | 3000–30000 A |
| Integrated ground-fault protection | Yes |
| 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), 220–500 V AC | 100 kA |
| Rated ultimate short-circuit breaking capacity (Icu), 660–690 V AC | 85 kA |
| Rated service short-circuit breaking capacity (Ics), 220–690 V AC | 85 kA |
| Rated short-time withstand current (Icw) | 75 kA for 1 s; 65 kA for 3 s |
| Current type | AC |
| Power loss | 130 W |
| Electrical durability | 9,000 cycles at ≤440 V AC; 9,000 cycles at 500–690 V AC |
| Electrical operating frequency | 20 cycles per hour |
| Mechanical durability | 20,000 cycles |
| Mechanical operating frequency | 60 cycles per hour |
| Auxiliary contacts | 4 changeover contacts |
| Position indication | Circuit breaker open / closed |
| Integrated motor drive | No |
| Optional motor drive | Yes |
| DIN rail mounting | No |
| Standards | IEC |
| Dimensions (H × W × D) | 418 × 530 × 302 mm |
| Net weight | 76 kg |
| Customs tariff number | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA056445R1 used for?
The ABB 1SDA056445R1 is a fixed air circuit breaker used for switching and protecting high-current low-voltage electrical distribution circuits against overload, short-circuit and ground-fault conditions.
What is the rated current of the ABB E3H2000 1SDA056445R1?
The circuit breaker has a rated uninterrupted current of 2000 A, making it suitable for demanding industrial, commercial and infrastructure power distribution applications.
What protection unit is fitted to the ABB 1SDA056445R1?
The 1SDA056445R1 is fitted with an ABB PR122/P-LSIG R2000 electronic overcurrent release, providing long-time, short-time, instantaneous and ground-fault protection functions.
What does LSIG protection mean?
LSIG denotes long-time overload protection, short-time short-circuit protection, instantaneous short-circuit protection and ground-fault protection, providing comprehensive electronic protection for low-voltage distribution circuits.
What is the short-circuit breaking capacity of the ABB E3H2000?
The E3H2000 1SDA056445R1 provides an ultimate short-circuit breaking capacity of 100 kA from 220–500 V AC and 85 kA at 660–690 V AC, with a rated service short-circuit breaking capacity of 85 kA across the specified operating-voltage range.
Is the ABB 1SDA056445R1 fixed or withdrawable?
The 1SDA056445R1 is a four-pole fixed air circuit breaker with rear flat horizontal terminals for permanent integration into compatible low-voltage switchboards.
Trusted ABB Power Distribution Technology
ABB SACE Emax air circuit breakers provide robust high-current switching and advanced electronic protection for demanding low-voltage distribution systems, combining high short-circuit performance with comprehensive protection and dependable switchgear integration.
