a lighting rail for at least one lighting device , the lighting device being provided with a contact part for electrical contact with a conducting strip of the lighting rail , and with clamping and tension means to press the contact part against the conducting strip , wherein the lighting rail comprises a substantially u - shaped support element , a live conducting rail fitting into the support element and insulating means for insulating the conducting strip from the live conducting rail fitting therein , wherein the support element and the live conducting rail comprise cooperating attaching means to releasably attach the live conducting rail in the support element by snapping .