Hadsel is the name of a farm, an island and a parish in Nordland county, Northern Norway. http://en.wikipedia.org/wiki/Hadsel
I very much doubt there is any connection between Hadsel in Norway and the English Hadsell family. Hadsell has been a surname in England for many centuries. (It is more likely they have origin in West Haddlesey in North Yorkshire, England.)
There are about 20 persons in Norway using Hadsel as a surname. Norwegian surnames were established about 1900 (by law in 1923). Some families then took in use the farm name (their address) as a family surname. When they lived on Hadsel farm, they might use Hadsel as a surname.