I have a 5ton heat pump and it shuts off after about 10 min. on cool, and I'm constantly going to the roof and resetting the breaker, help me I've had 3 techs come out to fix

Could be a defective or weak breaker.
Use a amp probe and check the current draw and compare it to the tag on the unit.

Wow, did you pay the 3 techs and they not fix your problem, just don`t seem what I would do. If I pay for a service I expect them to do their job. Maybe I`m a softy but when I go to someone's house to do a job,if I don`t accomplish my job,I don`t charge them. Its not my customers fault I don`t know what I`m doing.