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.
1SDA055703R1 ABB E1N 800 PR123/P-LSIG 800A 3-Pole Fixed Air Circuit Breaker
ABB 1SDA055703R1 SACE Emax E1N 800 is an 800 A three-pole fixed air circuit breaker with horizontal rear terminals, a PR123/P-LSIG R800 electronic trip unit providing LSIG protection and 50 kA short-circuit breaking capacity across 220–690 V AC.
£13,832.77
Why Choose the ABB E1N 800 PR123/P-LSIG 800A Air Circuit Breaker?
The ABB E1N 800 PR123/P-LSIG, order code 1SDA055703R1, is a high-performance 800 A three-pole fixed air circuit breaker designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the established ABB SACE Emax / New Emax range, it combines the E1 frame with the higher N short-circuit performance level and an advanced PR123/P-LSIG R800 electronic overcurrent release.
The fitted PR123/P-LSIG R800 electronic trip unit provides long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault protection. This comprehensive LSIG configuration supports selective and coordinated protection strategies while helping safeguard cables, busbars, switchgear and connected equipment against overloads, short circuits and earth faults.
This model is supplied in a fixed three-pole configuration with rear flat horizontal terminals for permanent installation within compatible low-voltage switchboards. It provides 50 kA ultimate and service short-circuit breaking capacity across its specified 220–690 V AC range, while four auxiliary contacts and open/closed position indication support integration with switchboard signalling, monitoring and control systems.
Key Advantages
- High-performance 800 A air circuit breaker for demanding low-voltage distribution systems.
- E1N performance level provides increased short-circuit capability compared with E1B variants.
- PR123/P-LSIG R800 electronic trip unit provides comprehensive electronic protection.
- LSIG protection functions cover long-time overload, short-time delayed short circuit, instantaneous short circuit and earth-fault conditions.
- 50 kA Icu and Ics across the specified 220–690 V AC range.
- 50 kA short-time withstand current for 1 s supports demanding high-fault-level installations.
- Fixed construction with rear flat horizontal terminals is well suited to permanent switchboard installation.
- Four auxiliary contacts support remote circuit-breaker status signalling and automation.
Key Features
- ABB SACE Emax E1N series.
- 800 A rated current.
- Three-pole configuration.
- PR123/P-LSIG R800 electronic overcurrent release.
- Long-time (L) overload protection.
- Short-time (S) delayed short-circuit protection.
- Instantaneous (I) short-circuit protection.
- Integrated earth-fault (G) protection.
- 690 V AC rated operational voltage.
- 50 kA rated ultimate short-circuit breaking capacity across 220–690 V AC.
- 50 kA rated service short-circuit breaking capacity across 220–690 V AC.
- 50 kA Icw for 1 s and 36 kA for 3 s.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
Advanced 50kA LSIG Protection for 800A Power Distribution
Air circuit breakers such as the ABB SACE Emax E1N protect high-current electrical distribution systems by detecting and interrupting abnormal current conditions before cables, busbars, switchgear and connected equipment can sustain serious damage. The E1N 800 combines an 800 A current rating with 50 kA ultimate and service short-circuit breaking capacities throughout its specified 220–690 V AC range, making it suitable for installations with higher prospective fault currents.
The PR123/P-LSIG electronic release combines long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault protection within one advanced trip unit. The short-time function supports selective coordination with downstream protective devices, while the G function extends protection to earth-fault conditions. Combined with fixed construction and horizontal rear terminals, the 1SDA055703R1 provides a robust solution for sophisticated low-voltage distribution switchboards.
Typical Applications
- Industrial low-voltage distribution switchboards.
- Main incoming circuit protection.
- High-current feeder circuit protection.
- Three-phase electrical distribution systems.
- Manufacturing plants and process facilities.
- Commercial and infrastructure power distribution.
- Generator and transformer secondary distribution systems.
- Fixed switchboards requiring advanced LSIG protection and 50 kA breaking capacity.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| ABB order code | 1SDA055703R1 |
| ABB product group | 310513-New Emax |
| Product type | Air circuit breaker |
| Frame / sub-type | E1 |
| Short-circuit performance level | N |
| Rated current (In) | 800 A |
| Rated operational current (Ie) | 800 A |
| Rated uninterrupted current (Iu) | 800 A |
| Number of poles | 3 |
| Current type | AC |
| Rated operational voltage | 690 V AC |
| Rated voltage (Ur) | 690 V |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) | 50 kA at 220–690 V AC |
| Rated service short-circuit breaking capacity (Ics) | 50 kA at 220–690 V AC |
| Rated short-time withstand current (Icw) | 50 kA for 1 s |
| Trip unit | PR123/P-LSIG R800 |
| Release type | Electronic |
| Protection functions | L, S, I and G |
| Long-time protection | Overload protection |
| Short-time protection | Delayed short-circuit protection |
| Instantaneous protection | Short-circuit protection |
| Earth-fault protection | Integrated G function |
| Installation | Fixed |
| Terminal connection | Rear flat horizontal |
| Auxiliary contacts | 4 |
| Position indication | Circuit breaker open / closed |
| Power loss | 65 W |
| Electrical durability | 10,000 cycles at ≤440 V and 10,000 cycles at 500–690 V |
| Electrical operating frequency | 30 cycles per hour |
| Mechanical durability | 25,000 cycles |
| Mechanical operating frequency | 60 cycles per hour |
| Product dimensions (W × H × D) | 296 × 418 × 302 mm |
| Product net weight | 40 kg |
| Standard | IEC |
| Customs tariff number | 85362090 |
| EAN | 8015644570439 |
Frequently Asked Questions
What is the ABB 1SDA055703R1 used for?
The ABB 1SDA055703R1 is an 800 A three-pole fixed SACE Emax air circuit breaker designed for switching and protecting high-current low-voltage industrial and commercial electrical distribution systems.
What protection functions does the PR123/P-LSIG trip unit provide?
The PR123/P-LSIG R800 electronic trip unit provides long-time overload (L), short-time delayed short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection.
What is the breaking capacity of the ABB E1N 800?
The E1N 800 has rated ultimate and service short-circuit breaking capacities of 50 kA across 220–690 V AC, together with rated short-time withstand currents of 50 kA for 1 s and 36 kA for 3 s.
Is the ABB 1SDA055703R1 fixed or withdrawable?
The 1SDA055703R1 is a fixed three-pole air circuit breaker with rear flat horizontal terminals, designed for permanent installation within compatible ABB SACE Emax low-voltage switchboard assemblies.
Does the ABB 1SDA055703R1 provide earth-fault protection?
Yes. The fitted PR123/P-LSIG electronic release includes integrated G earth-fault protection in addition to long-time, short-time and instantaneous overcurrent protection.
Trusted by Industrial Power Professionals Worldwide
ABB SACE Emax air circuit breakers are widely used in low-voltage distribution systems where dependable high-current switching, advanced electronic protection and robust short-circuit performance are required.
