60amp GFCI for Hot Tub? Anyone know where I can find a 60 amp GFCI for...

Anyone know where I can find a 60 amp GFCI for my Hot tub. I hold tried hardward store, Pool & Spa sotres and numerous electrical supply. The problem is that most are rated for 10hp, and my spa have 3-6hp motors (18hp). I have burned through 2 Conneticut electric spa gfci panel in the ultimate 6 months. at $100.00 a pop, it is getting expensive. I keep getting the run around. Anyone hold any ideas?
Answers:    Siemens have a 60 amp GFI that we use to sell when we be a Sundance Spa dealership. Go find your nearest Sundance Spa Dealership.

http://www.hydrospa.com/parts/gfci_break... it's near the bottom of the page. Hydrospa is presently owned by Infinity Spas. This is a very reliable GFI. I would similar to to know what tub you have. Model/brand. and what spa pack and motors are within it.
Looks like you are a total lot lite on the amperage. Roughly 18 Hp would equal 13428 watts divided by 240V would equal 55.95 amps. You then hold to add your the heaters of your Hot tub and any auxiliary electrical you would enjoy. Your tub should have the correct size breaker tabled somewhere. You might then find the correct size at Lowe's or Home Depot. Find someone well-versed in the store to look it up for you as they will probably enjoy to order it...