Can I use a 240v breaker with a 250v recepticle?

I have the following temperature controller: http://www.omega.com/manuals/manualpdf/M0531.pdf and I was wondering if I could use an 80a 120/240v breaker to run it. I'm not sure if the amperage rating is for 120v or 240v, either way I think it will suffice as I need 50a to run the "250v"... show more I have the following temperature controller:

http://www.omega.com/manuals/manualpdf/M0531.pdf

and I was wondering if I could use an 80a 120/240v breaker to run it. I'm not sure if the amperage rating is for 120v or 240v, either way I think it will suffice as I need 50a to run the "250v" recepticle. Thanks for the help.
Update: In response to dtsell:

The controller unit says it requires 250v to operate, I want to know if 240v and 250v are the same thing. Also, the breaker I am looking at says it's rated for 80 amps, but it says it's rated for 120 and 240v, so I am unsure if it will provide 80 amps for both 120 and 240 volts.
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