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P-RAL is a factory-assembled, metal-enclosed Air Type Ring main unit which is assembled in Powerline factories based on ABB Load break switches NAL/NALF

P-RAL Air Type Ring main units are based on a modular principle, which gives a wide range of functionality and a unique design that represents an attractive solution for breaking applications in enclosed switchgear.

P-RAL ring main unit is providing several systems combinations of the load break switching functions in medium voltage secondary power distribution systems. It is ideal for distribution systems for protecting feeders and power transformers since the main application for such a solution is:

  •         Line switch disconnectors in medium-voltage networks

  •          Switch disconnectors with fuses for the switching and protection of Distribution transformers

Safe, reliable and Eco-friendly product to provide sustainability.


12 KV

Up to 630A

25 KA short circuit capacity

Maximum relative humidity 95%


Absolute protection with a closed front door

Little maintenance


Very good operational performance


Power distribution

Transformer sub-stations

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