A blown circuit breaker trips to protect your wiring from overheating
When a circuit breaker trips, it cuts power to that circuit as a safety measure — it means something on that circuit is drawing more electricity than the breaker is rated to handle. To restore power, you locate the breaker in your panel, switch it fully to the OFF position, then switch it back to ON. If it trips again when ready or within a few minutes, the problem is still present and you should not keep resetting it. That repeated tripping is a sign of a genuine electrical fault that needs a licensed electrician.
The difference between a tripped breaker and a blown one is mostly language — electricians call it a "tripped" breaker, homeowners often say "blown." The mechanism is the same: an internal switch flips off when current exceeds the breaker's rating. Unlike an old-style fuse that actually burns out and must be replaced, a modern breaker can trip and reset many times. But if it keeps tripping, replacing the breaker itself is not the answer — the underlying problem is.
Key Takeaways
- Reset a tripped breaker by switching it fully to OFF, then back to ON; if it trips again within minutes, stop resetting and call an electrician.
- A breaker that trips once during a storm or after you plugged in too many devices may have done its job; one that trips repeatedly indicates a fault in the wiring or an appliance.
- Do not ignore a breaker that will not stay ON — continuing to reset it risks an electrical fire, and the problem will not fix itself.
- A licensed electrician can identify whether the fault is a short circuit, an overloaded circuit, or a failing appliance, and repair it safely.
How to reset a tripped breaker safely
Open your electrical panel door — usually a gray or metal box mounted on a wall in a basement, garage, utility closet, or outside. Look at the row of switches inside. The one that has tripped will be in the middle position or slightly toward OFF, while the others are in the ON position (usually toward the right). Note which breaker it is — the label on the panel or on the breaker itself will tell you which rooms or appliances it controls.
Grasp the breaker switch firmly and push it all the way to the OFF position, then push it back to ON. You may hear or feel a small click. The power to that circuit should now be restored. Turn on a light or plug in a lamp on that circuit to confirm. If the breaker stays ON and power is restored, the problem has resolved — this can happen if you overloaded the circuit temporarily (running a space heater and a hair dryer at the same time, for example) or if a power surge from a storm triggered it.
If the breaker trips again within a few minutes of resetting it, do not keep resetting it. Each reset while a fault is present risks damage to the wiring inside your walls. Leave the breaker OFF and contact a licensed electrician. Continuing to reset a breaker that will not hold is like repeatedly trying to start a car that will not turn over — you are not fixing the problem, you are potentially making it worse.
Why a breaker trips repeatedly
A circuit breaker trips when the current flowing through it exceeds its rating — usually 15 or 20 amps for standard household circuits. This can happen for three main reasons: the circuit is genuinely overloaded, there is a short circuit in the wiring or an appliance, or the breaker itself is failing.
Overloading is the most common cause and the least serious. If you plug a space heater, a microwave, and a coffee maker into the same circuit at the same time, you exceed the breaker's capacity and it trips. The solution is to spread those devices across different circuits or use them at different times. If the breaker stays ON after you unplug the high-draw device, overloading was the cause.
A short circuit occurs when a live wire touches a neutral or ground wire, creating a path of very high current. This can happen inside an appliance, inside a wall (from damaged insulation or rodent damage), or at a loose connection in the panel itself. A short circuit is dangerous — it can cause a fire — and always requires a licensed electrician to locate and repair.
A failing breaker is less common but possible. If a breaker trips repeatedly even when nothing is plugged into that circuit, the breaker's internal switch may be worn out or defective. An electrician can test the breaker and replace it if necessary.
How to identify which appliance is causing the problem
If a breaker trips when you use a specific appliance — a dishwasher, water heater, air conditioner, or refrigerator — that appliance may be the source. Unplug or turn off that appliance, reset the breaker, and see if it stays ON. If it does, the appliance has an internal fault and should not be used until it is repaired or replaced.
If the breaker trips when nothing is plugged in and no appliances are running, the fault is in the wiring itself, not in a device. This requires an electrician to diagnose. Do not attempt to find the fault yourself by plugging things back in one at a time — if there is a short circuit in the wall, you risk shock or fire.
If the breaker trips only when you run multiple devices at once on that circuit, you have an overloaded circuit, not a fault. The solution is to move some devices to a different circuit or use them at different times. If you consistently need more power on that circuit, an electrician can add a new circuit for you.
When to call a licensed electrician
Call an electrician if a breaker trips more than once in a week, if it trips when nothing is plugged in, if it trips when ready after you reset it, or if you smell burning or see scorch marks around the breaker or the outlet. Any of these signs points to a fault that is beyond a temporary overload.
You should also call an electrician if you are not sure which circuit a breaker controls, if you are uncomfortable opening the panel, or if you have an older panel with fuses instead of breakers — fuse panels require different handling and should be serviced by a professional. If you have a main breaker that trips (the large switch at the top of the panel), do not reset it yourself; call an electrician when ready.
A licensed electrician can use a multimeter and other tools to test the circuit, locate the source of the fault, and repair it safely. They can also tell you whether the breaker itself needs replacement or whether the problem is in the wiring, an appliance, or the panel connection. The cost of a service call is far less than the cost of an electrical fire or the risk of electrocution.
What not to do
Do not ignore a breaker that trips repeatedly. The breaker is working as designed — it is protecting your home from an electrical fault — but the fault itself will not go away on its own. Continuing to reset it while the fault is present risks an electrical fire inside your walls, where you cannot see it.
Do not replace a breaker with one rated for higher amperage to stop it from tripping. This defeats the breaker's safety function and can cause a fire. Breakers are sized to match the wire gauge of the circuit, and oversizing a breaker can allow dangerous current to flow through undersized wire.
Do not assume that a breaker that trips once during a power outage or storm is broken. Surges and sudden power changes can trigger breakers, and a single trip followed by normal operation is not a sign of a problem. However, if it trips repeatedly, the underlying issue needs attention.
Frequently Asked Questions
Is it safe to reset a breaker myself?
Yes, resetting a breaker is safe — you are straightforward flipping a switch. The danger comes from repeatedly resetting a breaker that will not stay ON, because you are masking an electrical fault that could cause a fire. Reset it once; if it trips again within minutes, stop and call an electrician.
Why does my breaker trip every time I use my air conditioner?
Air conditioners draw large amounts of current, especially when they first start. If the breaker trips only when the AC runs, the circuit is overloaded for that appliance. An electrician can determine whether the AC needs its own dedicated circuit or whether the breaker itself is undersized for the load.
Can a breaker trip from a power surge?
Yes, a sudden power surge from lightning or a grid disturbance can trip a breaker. If it trips once and then stays ON after you reset it, the surge has passed. If it trips repeatedly, there is an underlying fault that needs investigation.
What does it mean if the main breaker trips?
The main breaker at the top of the panel controls all power to the house. If it trips, there is a serious fault — likely a short circuit or a massive overload — affecting the entire home. Do not reset it yourself; turn off all major appliances and call an electrician when ready.
How much does it cost to have an electrician fix a tripped breaker?
A service call typically costs between $100 and $300 depending on your location and the time of day. If the breaker itself needs replacement, add $50 to $150 for the part. If the fault is in an appliance or wiring, repair costs vary widely, but identifying the problem is the first step.