Factory fire at Unanderra

A Unanderra factory has been evacuated following an electrical fire.

Fire and Rescue NSW inspector Greg Houston said the blaze began in a dust extraction device, similar to a large vacuum cleaner, at the Wideform building at about 2.50pm. 

It was extinguished about half an hour later.

Insp Houston said three fire crews attended, and all employees had been accounted for.

The incident was causing some traffic delays.