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1SDA055779R1 ABB E1N 1600 PR122/P-LI 1600A 3P Withdrawable Air Circuit Breaker Moving Part
ABB 1SDA055779R1 E1N 1600 three-pole withdrawable air circuit breaker moving part rated at 1600 A with a PR122/P-LI R1600 electronic release providing long-time overload and instantaneous short-circuit protection.
£8,703.60
Why Choose the ABB E1N 1600 PR122/P-LI 1600A 3P Withdrawable Air Circuit Breaker Moving Part?
The ABB E1N 1600 PR122/P-LI, order code 1SDA055779R1, is a high-performance three-pole withdrawable air circuit breaker moving part designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax E1N series, it combines a 1600 A rated current with the PR122/P-LI R1600 electronic overcurrent release for dependable overload and instantaneous short-circuit protection.
This E1N configuration is supplied as the withdrawable moving part (W MP) and is designed for use with the appropriate ABB Emax withdrawable fixed part. Its draw-out architecture allows the breaker moving assembly to be disconnected and removed for inspection, servicing or replacement, making it particularly suitable for switchboards where maintainability and continuity of service are important.
The E1N 1600 platform provides a rated operational voltage of 690 V AC and 50 kA rated ultimate and service short-circuit breaking capacity. The PR122/P-LI release provides long-time overload and instantaneous short-circuit protection, combining electronic protection with the service-friendly construction of ABB's withdrawable Emax platform.
Key Advantages
- Heavy-duty ABB SACE Emax air circuit breaker moving part for low-voltage power distribution.
- 1600 A rated current for high-current industrial and commercial installations.
- Three-pole configuration for three-phase electrical distribution systems.
- PR122/P-LI R1600 electronic protection release provides long-time overload and instantaneous short-circuit protection.
- 50 kA short-circuit breaking performance for demanding low-voltage networks.
- Withdrawable moving-part construction supports efficient inspection, servicing and replacement.
- Designed for integration with the appropriate ABB Emax withdrawable fixed part.
Key Features
- ABB SACE Emax E1N series.
- 1600 A rated uninterrupted current.
- 3-pole withdrawable air circuit breaker moving part.
- PR122/P-LI R1600 electronic overcurrent release.
- Long-time (L) and instantaneous (I) protection functions.
- 690 V AC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 50 kA rated ultimate short-circuit breaking capacity.
- Withdrawable / draw-out moving-part configuration.
Reliable Protection for High-Current Distribution Systems
Air circuit breakers such as the ABB E1N 1600 provide switching and automatic protection for high-current low-voltage circuits. The electronic release monitors current conditions and commands the breaker to interrupt the circuit when configured protection thresholds are exceeded, helping protect cables, switchgear and connected equipment against damaging overload and short-circuit currents.
The PR122/P-LI release combines long-time overload protection with instantaneous short-circuit protection. Together with the withdrawable E1N architecture, this provides a practical solution for installations requiring high fault-interruption performance and a breaker assembly that can be removed from the switchboard for inspection, servicing or replacement.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial power distribution systems.
- Main incomer and high-current feeder protection.
- Manufacturing and process plants.
- Commercial and infrastructure electrical installations.
- Generator and transformer distribution systems.
- Withdrawable switchgear requiring serviceable high-current breaker assemblies.
Technical Specifications
| Series | SACE Emax E1N |
|---|---|
| ABB order code | 1SDA055779R1 |
| Product group | 310513-New Emax |
| Product type | Air circuit breaker withdrawable moving part |
| Performance level | E1N |
| Frame size | E1 |
| Rated current (In) | 1600 A |
| Rated uninterrupted current (Iu) | 1600 A |
| Number of poles | 3 |
| Current type | AC |
| 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) | 50 kA |
| Rated service short-circuit breaking capacity (Ics) | 50 kA |
| Rated short-time withstand current (Icw) | 50 kA for 1 s; 36 kA for 3 s |
| Protection release | PR122/P-LI R1600 |
| Release type | Electronic overcurrent release |
| Protection functions | Long-time (L) and instantaneous (I) |
| Earth-fault protection | Not integrated in the LI configuration |
| Mounting version | Withdrawable / draw-out |
| Component | Moving part (W MP) |
| Standard | IEC 60947-2 |
Frequently Asked Questions
What is the ABB 1SDA055779R1?
The ABB 1SDA055779R1 is an E1N 1600 three-pole withdrawable SACE Emax air circuit breaker moving part rated at 1600 A and equipped with a PR122/P-LI R1600 electronic overcurrent release.
What protection functions does the PR122/P-LI provide?
The PR122/P-LI electronic release provides long-time overload (L) and instantaneous short-circuit (I) protection.
What is the breaking capacity of the ABB E1N 1600?
The E1N 1600 provides a rated ultimate short-circuit breaking capacity of 50 kA and a rated short-time withstand current of 50 kA for 1 s, making it suitable for demanding low-voltage distribution applications.
Is the ABB 1SDA055779R1 fixed or withdrawable?
The 1SDA055779R1 is the withdrawable moving part of the E1N 1600 circuit breaker and is intended for use with the appropriate ABB Emax withdrawable fixed part.
Does the PR122/P-LI provide earth-fault protection?
No. The LI configuration provides long-time overload and instantaneous short-circuit protection. Applications requiring integrated earth-fault protection use an appropriate LSIG release configuration.
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 construction.
