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1SDA056375R1 ABB E3H1250 PR123/P-LSIG 1250 A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA056375R1 E3H1250 is a 1250 A three-pole fixed SACE Emax air circuit breaker with a PR123/P-LSIG electronic overcurrent release, LSIG protection and rear horizontal terminals for demanding low-voltage power distribution.
£15,833.62
Why Choose the ABB 1SDA056375R1 E3H1250 Air Circuit Breaker?
The ABB 1SDA056375R1 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 three-pole fixed circuit breaker combines a 1250 A rated current with the advanced PR123/P-LSIG electronic overcurrent release for comprehensive protection of industrial, commercial and infrastructure power installations.
The E3H1250 is equipped with ABB's PR123/P-LSIG R1250 electronic trip unit, providing long-time, short-time, instantaneous and ground-fault protection. This LSIG configuration provides comprehensive electronic protection against overloads, short circuits and earth faults, making the breaker particularly suitable for critical distribution systems requiring advanced protection and selective fault management.
With a 1250 A rated current, three-pole fixed construction and rear horizontal terminals, the 1SDA056375R1 is engineered for permanent integration into low-voltage switchboards. The E3H high-performance configuration provides strong short-circuit capability for installations with substantial prospective fault currents while retaining the proven mechanical and electrical performance of the ABB SACE Emax platform.
Key Advantages
- High-performance ABB SACE Emax E3H air circuit breaker for demanding low-voltage distribution.
- 1250 A rated current for industrial, commercial and infrastructure power systems.
- PR123/P-LSIG electronic overcurrent release for advanced circuit protection.
- LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
- E3H high-breaking-capacity performance for installations with substantial prospective fault currents.
- Three-pole fixed construction for permanent integration into compatible switchboards.
- Rear horizontal terminals facilitate practical connection to switchboard busbars and conductors.
- Four auxiliary contacts with open/closed position indication support circuit-breaker monitoring and control.
Key Features
- ABB SACE Emax E3H1250 series air circuit breaker.
- 1250 A rated current.
- Three-pole configuration.
- Fixed circuit-breaker version.
- Rear horizontal terminals.
- PR123/P-LSIG R1250 electronic overcurrent release.
- LSIG protection covering long-time, short-time, instantaneous and ground-fault protection.
- Advanced electronic protection for critical low-voltage distribution circuits.
- E3H high short-circuit performance class.
- Designed for fixed installation in low-voltage switchgear.
- Four auxiliary contacts for status signalling.
- Circuit-breaker open/closed position indication.
Advanced Protection for High-Performance Power Distribution
Air circuit breakers such as the ABB E3H1250 provide switching, isolation and protection for high-current low-voltage distribution systems. By detecting overload, short-circuit and ground-fault conditions, the electronic protection system enables the breaker to interrupt potentially damaging fault currents and helps protect busbars, cables, transformers and connected electrical equipment.
The integrated PR123/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection for comprehensive fault management. Combined with the E3H breaker's 1250 A current rating, high short-circuit performance and fixed construction, the 1SDA056375R1 is particularly suitable for main incomers, feeders and critical distribution circuits requiring sophisticated electronic protection.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Manufacturing and process plants.
- Commercial and large-building electrical distribution.
- Main incomer and feeder protection.
- Generator and transformer distribution circuits.
- Installations requiring ground-fault protection.
- Power control centres and fixed switchgear assemblies.
- Infrastructure and utility installations with high prospective fault currents.
Technical Specifications
| Product group | 310513-New Emax |
|---|---|
| Series | SACE Emax / New Emax E3 |
| ABB order code | 1SDA056375R1 |
| Product type | Air circuit breaker |
| Frame / performance type | E3H |
| Short-circuit performance level | H |
| Rated current (In) | 1250 A |
| Number of poles | 3 |
| Mounting version | Fixed |
| Terminal arrangement | Rear horizontal terminals |
| Trip unit | PR123/P-LSIG R1250 electronic overcurrent release |
| Release type | Electronic |
| Protection functions | LSIG – long-time, short-time, instantaneous and ground fault |
| Current type | AC |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Net weight | 72 kg |
| EAN | 8015644577155 |
| Customs tariff number | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA056375R1 used for?
The ABB 1SDA056375R1 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 E3H1250 1SDA056375R1?
The circuit breaker has a rated current of 1250 A, making it suitable for demanding industrial, commercial and infrastructure power distribution applications.
What protection unit is fitted to this circuit breaker?
The 1SDA056375R1 is fitted with an ABB PR123/P-LSIG R1250 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 does the E3H designation mean?
The E3H designation identifies the ABB SACE Emax E3 frame in its high short-circuit performance class, intended for demanding low-voltage power distribution applications where substantial fault levels may be present.
Is the ABB 1SDA056375R1 fixed or withdrawable?
The 1SDA056375R1 is a three-pole fixed air circuit breaker with rear 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 sophisticated protection and dependable switchgear integration.
