no, it was only 2 prongs on the cord. i did, however, have it plugged into a surge protector. not sure if that helps any. i guess it's gonna be a wait and see if my anenome and xenia make it. my anenome is clear right now, but is extending his arms today. last night he stayed closed up really tight. maybe he'll bounce back. my one stalk of xenia looks sad, but not to bad. i'm hoping it pulls through too. everything else in my tank appears to be ok.