When a circuit breaker trips, your power goes out. If you are experiencing frequent tripping of your circuit, there are three potential issues that may be at play with your circuit.
#1 Short Circuit
Short circuits are a common cause of tripped circuits. When a short circuit happens, a hot wire contacts a neutral wire inside of an electrical outlet. When the hot wire touches the neutral wire, too much current is forced to flow through the circuit, which then creates excess heat. The excess heat and current is detected by your circuit, and the breaker is tripped. The circuit is tripped in order to ensure that an electrical fire doesn't happen.
Although you can just flip your circuit back on, if you suspect that a short circuit may be the cause, you need to have an electrician find the short circuit and fix it. A short circuit, especially one that reoccurs, is a big fire hazard.
#2 Overloaded Circuit
Another reason that your circuit may trip is because of an overloaded circuit. Overloaded circuits are fairly common, and they occur when you are sending too many amps through the circuit. This generally means you have to many items plugged in and running at the same time, and your current electrical set-up can't handle powering all those items at once.
When this happens, your circuit will trip. When a circuit is overloaded, a fire could potentially start and your electronics could potentially get damaged. As a short-term solution, unplug items and reduce the electrical load on the circuit. For the long-term, have an electrician come out and install new outlets that are on their own circuit so you can run the electrical items you need to.
#3 Ground Fault
The third reason your circuit may trip is because of a ground fault. A ground fault occurs when a bare ground wire and a hot wire are both touching the metal box where the wires are located. When both these wires touch the metal box they are housed in, this can cause an increase in electricity to be sent through the circuit. The circuit is not able to handle this increase in electricity, and your circuit is typically burned out. When this happens, the outlet itself may smoke a little, and afterwards, the outlet will not work anymore. You will need to call an electrician to replace the damaged outlet.
Don't just flip back on a circuit when it trips. Try to figure out why the circuit tripped, and call an electrical repair service to identify and deal with the root issue.