Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA055706R1 ABB E1N800 PR121/P-LSIG 800A 4P Fixed Air Circuit Breaker
ABB 1SDA055706R1 SACE Emax E1N800 four-pole fixed air circuit breaker rated at 800 A with horizontal rear terminals and a PR121/P-LSIG electronic trip unit providing LSIG protection for low-voltage power distribution systems.
£10,087.16
Why Choose the ABB E1N800 PR121/P-LSIG 800A 4P Fixed Air Circuit Breaker?
The ABB E1N800 PR121/P-LSIG, order code 1SDA055706R1, is a high-performance SACE Emax air circuit breaker designed for switching and comprehensive protection in low-voltage power distribution systems. Rated at 800 A, this four-pole circuit breaker combines the E1N frame with a PR121/P-LSIG electronic overcurrent release for dependable protection of industrial and commercial electrical installations.
This circuit breaker is supplied in a four-pole fixed configuration with horizontal rear terminals, making it suitable for permanent installation in low-voltage switchboards and distribution assemblies. The four-pole construction enables switching of the neutral conductor where required, while the rear terminal arrangement facilitates integration with switchboard busbars.
The PR121/P-LSIG electronic trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection. With a rated uninterrupted current of 800 A, a rated operational voltage of up to 690 V AC and an E1N short-circuit breaking capacity of 50 kA at 415 V AC, this breaker provides robust protection for demanding power distribution applications.
Key Advantages
- Heavy-duty ABB SACE Emax air circuit breaker for low-voltage power distribution.
- 800 A rated uninterrupted current for industrial and commercial installations.
- Four-pole fixed configuration suitable for three-phase systems requiring neutral switching.
- PR121/P-LSIG electronic overcurrent release for comprehensive circuit protection.
- Provides long-time, short-time, instantaneous and ground-fault protection.
- 50 kA ultimate breaking capacity at 415 V AC.
- Horizontal rear terminals support practical switchboard busbar connections.
Key Features
- ABB SACE Emax E1N series.
- 800 A rated uninterrupted current.
- Four-pole (4P) construction.
- Fixed-mounted circuit-breaker configuration.
- Horizontal rear terminals.
- PR121/P-LSIG electronic overcurrent release.
- LSIG protection functions: long-time, short-time, instantaneous and ground fault.
- 690 V AC maximum rated operational voltage.
- 50 kA Icu at 415 V AC.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- Designed for fixed installation in low-voltage power distribution assemblies.
Reliable Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB SACE Emax E1N800 provide switching, isolation and protection for high-current low-voltage distribution circuits. The four-pole construction supports applications where the neutral conductor must also be switched, while the fixed format and horizontal rear terminals enable efficient integration into electrical switchboards.
The PR121/P-LSIG electronic trip unit provides coordinated protection against overloads, delayed and instantaneous short circuits and ground faults. Combined with the E1N platform, it provides a robust solution for main incomers, feeders and other critical circuits requiring comprehensive electronic protection.
Typical Applications
- Industrial low-voltage switchboards.
- Main incoming power distribution circuits.
- Electrical feeder and distribution protection.
- Three-phase systems requiring neutral switching.
- Manufacturing and process plants.
- Commercial and infrastructure power systems.
Technical Specifications
| Series | SACE Emax |
|---|---|
| Order code | 1SDA055706R1 |
| Product type | Air circuit breaker |
| Frame / sub-type | E1N |
| Rated current | 800 A |
| Number of poles | 4P |
| Version | Fixed |
| Terminal arrangement | Horizontal rear terminals |
| Trip unit | PR121/P-LSIG |
| Release type | Electronic |
| Protection functions | Long-time, short-time, instantaneous and ground fault |
| Rated operational voltage | Up to 690 V AC |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) at 415 V AC | 50 kA |
| Current type | AC |
| Mounting type | Fixed switchboard mounting |
| Standard | IEC 60947-2 |
Frequently Asked Questions
What is the ABB 1SDA055706R1?
It is an ABB SACE Emax E1N 800 A four-pole fixed air circuit breaker with horizontal rear terminals and a PR121/P-LSIG electronic overcurrent release.
What is the rated current of the ABB E1N800 1SDA055706R1?
The circuit breaker has a rated uninterrupted current of 800 A.
What protection does the PR121/P-LSIG trip unit provide?
The PR121/P-LSIG provides long-time, short-time, instantaneous and ground-fault protection, commonly identified as LSIG protection.
What is the breaking capacity of the ABB E1N800?
This E1N800 configuration has a rated ultimate short-circuit breaking capacity of 50 kA at 415 V AC.
Is the ABB 1SDA055706R1 fixed or withdrawable?
The 1SDA055706R1 is a fixed four-pole circuit breaker with horizontal rear terminals for permanent installation in a low-voltage switchboard.
Trusted by Power Distribution Professionals Worldwide
ABB SACE Emax air circuit breakers are engineered for dependable switching and protection in demanding low-voltage power distribution systems, combining high-current performance with comprehensive electronic protection for industrial and commercial installations.
