I would suspect it's something like one of these:

http://www.datasheetcatalog.org/data...8/187340_1.pdf

Digikey shows it, but they list the adjustable 5 amp version as not in stock.

http://search.digikey.com/scripts/Dk...01A-T5L-UDI-ND

Perhaps you can find a similar part somewhere near you..