Sometimes, transformers have a small heat fuse wrapped behind the paper wrapping the windings. If the transformer gets too hot this fuse will blow. I am not sure if this transformer has one. Peel away the paper or wrapping around windings and you may see the fuse.
Aug 28, 2016 Rating
Electric supply house? by: ADMIN
I suppose an electrical supply house may have one. I have never seen this component for sale by Aqua Products.