When a breaker trips it is usually doing its job. The heat at the buss bar from a breaker going bad can spread problems to other breakers. This is a loose connection on the buss bar. Breakers can also trip when the wire loosens on the breaker. The loose connection creates a hot spot that trips breaker. Wires that are connected to breakers naturally loosen over time.
A breakers job is to protect you and your property from electrical shorts or short circuits. There are many types of breakers available. Some replacement breakers fit a vast majority of electrical panels. It is very important and by code that only breakers designated for certain electrical panels be installed in them. This is because the UL listing has been approved for that installation.
Installing the incorrect breaker in your electrical breaker panel box
will effect the performance of the breaker to work properly.