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1SDA055720R1 ABB E1N 800 PR121/P-LI 800A 4P Withdrawable Air Circuit Breaker Moving Part
ABB 1SDA055720R1 E1N 800 four-pole withdrawable air circuit breaker moving part rated at 800 A with a PR121/P-LI R800 electronic overcurrent release, 50 kA breaking performance and four auxiliary position contacts.
£9,494.99
Why Choose the ABB E1N 800 PR121/P-LI 800A 4P Withdrawable Air Circuit Breaker Moving Part?
The ABB E1N 800 PR121/P-LI, order code 1SDA055720R1, is a high-performance four-pole withdrawable air circuit breaker moving part designed for protection and switching in low-voltage electrical distribution systems. As part of the established ABB SACE Emax E1 series, it combines an 800 A rated current with the electronic PR121/P-LI overcurrent release for dependable overload and short-circuit protection.
This E1N configuration is the withdrawable moving part (W MP) of the circuit breaker and is designed for use with the corresponding ABB Emax withdrawable fixed part. The draw-out architecture supports convenient inspection, maintenance and replacement within low-voltage switchboards, while the four-pole construction provides switching across three phases and neutral.
The E1N 800 platform provides a 50 kA short-circuit breaking performance for demanding power distribution applications. This moving part is supplied with a PR121/P-LI R800 electronic release and four auxiliary contacts for open/closed circuit-breaker position indication, providing a robust solution for industrial, commercial and infrastructure switchgear.
Key Advantages
- Heavy-duty ABB SACE Emax air circuit breaker moving part for low-voltage distribution.
- 800 A rated current for high-current electrical installations.
- Four-pole configuration for switching three phases and neutral.
- PR121/P-LI electronic protection release provides overload and instantaneous short-circuit protection.
- 50 kA E1N short-circuit breaking performance for demanding distribution systems.
- Withdrawable moving-part construction supports efficient switchboard servicing and maintenance.
- Supplied with four auxiliary contacts for circuit-breaker open/closed position indication.
Key Features
- ABB SACE Emax E1N series.
- 800 A rated current.
- 4-pole air circuit breaker moving part.
- PR121/P-LI R800 electronic overcurrent release.
- Long-time (L) and instantaneous (I) protection functions.
- 50 kA E1N breaking-capacity class.
- Withdrawable / draw-out moving-part construction.
- Four auxiliary contacts for breaker open/closed position indication.
- Designed for use with the corresponding ABB Emax withdrawable fixed part.
- Manual operating configuration suitable for integration into low-voltage switchgear.
Reliable Protection for Low-Voltage Distribution Systems
Air circuit breakers such as the ABB E1N 800 provide switching and automatic protection for high-current low-voltage circuits. The electronic protection release monitors current conditions and commands the breaker to interrupt the circuit when configured thresholds are exceeded, helping protect cables, switchgear and connected equipment against damaging overload and short-circuit currents.
The PR121/P-LI release combines long-time overload protection with instantaneous short-circuit protection. Together with the E1N breaker platform and its withdrawable architecture, this provides a practical solution for switchboards where reliable circuit protection, maintainability and efficient equipment servicing are important.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Main incomer and feeder circuit protection.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Generator and transformer distribution systems.
- Withdrawable switchgear requiring serviceable breaker assemblies.
Technical Specifications
| Series | SACE Emax E1 |
|---|---|
| ABB order code | 1SDA055720R1 |
| Product group | 310513-New Emax |
| EAN | 8015644570606 |
| Product type | Air circuit breaker withdrawable moving part |
| Performance level | E1N |
| Frame / current rating | 800 A |
| Rated current (In) | 800 A |
| Number of poles | 4 |
| Short-circuit breaking performance | 50 kA |
| Protection release | PR121/P-LI R800 |
| Release type | Electronic overcurrent release |
| Protection functions | Long-time (L) and instantaneous (I) |
| Mounting version | Withdrawable / draw-out |
| Component | Moving part (W MP) |
| Operating configuration | Manual |
| Auxiliary contacts | 4 |
| Auxiliary indication | Circuit breaker open / closed position |
| Product weight | 67 kg |
Frequently Asked Questions
What is the ABB 1SDA055720R1?
The ABB 1SDA055720R1 is the withdrawable moving part of an E1N 800 four-pole SACE Emax air circuit breaker, rated at 800 A and equipped with a PR121/P-LI R800 electronic overcurrent release.
What protection functions does the PR121/P-LI provide?
The PR121/P-LI electronic release provides long-time overload protection (L) and instantaneous short-circuit protection (I).
What is the short-circuit breaking performance of the ABB E1N 800?
The E1N 800 belongs to ABB's 50 kA E1N breaking-capacity class, making it suitable for demanding low-voltage power distribution applications.
Is the ABB 1SDA055720R1 a complete withdrawable circuit breaker?
The 1SDA055720R1 is the withdrawable moving part of the E1N 800 circuit breaker and is intended to be ordered and used with the appropriate ABB Emax withdrawable fixed part to form a complete draw-out breaker assembly.
What auxiliary contacts are included with the ABB 1SDA055720R1?
The moving part is supplied with four auxiliary contacts providing circuit-breaker open and closed position indication for integration with switchboard signalling and control systems.
Trusted Low-Voltage Protection from ABB
ABB SACE Emax air circuit breakers are engineered for dependable switching and protection in demanding low-voltage distribution systems, combining high interruption performance, electronic protection and service-friendly withdrawable configurations.
