I live in a mobile home with a Trane ac unit outside.This past winter we had a streak of really cold days and the house was not getting warm enough so we manually would switch the thermostat to the emergency heat.After about 2 or 3 days of this the ac breaker inside the house kicked off and every attempt to move the breaker to on it would immediately kick right off.I changed that breaker but the result was the same,it would kick right off. Someone told my wife that there are breakers inside the ac unit that probably kicked off due to overload or just time to replace them.Is this true and where would these breakers be located?

Dought there is a breaker it the outdoor unit. Probably a burnt wire. Or a grounded out compressor. Does it trip the breaker ith the t-stat turned off?

Yes even with the t-stat on off the breaker in the house still trips.where in the outdoor unit would the breaker be located?