Secondary Switchgear
PRAL
PRAL 12KV & 24KV Air Ring Main Unit — a compact switchgear solution for secondary power distribution networks, based on ABB load break switches NAL/NALF.
Voltage class12 / 24 kV
InsulationAir (AIS)
SwitchesABB NAL / NALF
- Metal enclosed unit for indoor installation
- Insulated by air (AIS)
- Maintenance-free and easy installation
- ON-OFF-Earth three-position load break switch
- Recyclable materials used
- Safe to approach and operate with power in the cables
- Fully automatic interlocking system
- Long service life — no additional replacement costs
Interactive · 3D guided tourBuild Your PRAL
Inside PRAL
A guided walkthrough of the air-insulated ring main unit — ring feeders, the transformer feeder, NAL/NALF load-break switches, earthing and the measuring cell, part by part. Turn the sound on, or step in and build your own.
Rated voltage12 / 24 kV
InsulationAir (AIS)
SwitchingABB NAL / NALF
ConfigurationRing main unit
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Track record
PRAL ring main units delivered — and counting
Air-insulated ring main units engineered and commissioned by Powerline for distribution networks across Egypt — a portfolio that keeps growing. Below is a selection of delivered reference projects.
Hover any project to pause the roll