Do All Power Strips Have Circuit Breakers? (Explained)

Power strips are extremely handy. They help keep our devices in close proximity and connected to the same outlet.

However, there are safety concerns when using power strips and that is why anything that reduces the risks will always be welcome. Power strips should never get hot, for instance.

In this article, we look at whether all power strips employ circuit breakers and what exactly they do to reduce the risks of using power strips.

Here’s If All Power Strips Have Circuit Breakers:

Most power strips should have a circuit breaker. Power strips with this added component prevent the flow of electricity when an excessive amount of current has been detected. Excessive flow is usually created by an overload, your power strip protects itself and all of the connected devices.

Two different power strips with electrical sockets of CEE 7 standard and two various power plugs with corresponding mains cables connected to one of them on a wooden surface

What Does the Circuit Breaker Do in a Power Strip?

Circuit breakers are electrical safety mechanisms, designed to protect an electrical circuit from either:

  1. Short-Circuiting
    • When too much current is passing through due to faulty wiring.
  2. Overloading
    • When too many devices are connected to the circuit, meaning the amount of current being pulled through is too high.
  3. Ground Faults
    • When there is too much moisture surrounding the circuit.

They are an essential element for safety in both our homes and in our work environments because of their ability to automatically detect and shut off an electrical current when it becomes dangerously high.

This is vital in order to prevent damage to electronic equipment.

It also helps prevent any fires from starting due to faulty wiring.

Therefore, considering the fact that power strips extend the electrical current from the wall socket to your devices, it is important (but not essential) for them to have inbuilt circuit breakers.

It is easier to understand the significance of circuit breakers in power strips, or even permanent wiring, once you have taken a look at how electricity is distributed:

The two main components of an electrical circuit in a building are:

  1. The hot wire – delivers the electricity from a power source such as a power plant.
  2. The neutral wire – this is the opposite end, and is connected to the earth.

An alternating current is produced when this circuit is closed, thus, safely providing electricity for all your household needs.

The term ‘alternating’ may sound like a current that fluctuates, but it is actually incredibly stable.

The hot wire and neutral wire should never directly touch, and dangers can arise when they do.

This can happen from either shoddy building work or a faulty device fusing them together.

This is where circuit breakers are crucial; they can detect abnormal power levels and in turn shut off the power directly.

They are particularly useful in power strips by being a preventative measure against overloading.

‘Overloading’ is when a dangerous amount of current passes through an electrical wire. In a power strip it can occur when:

  • Too many electrical devices are plugged into one power strip, drawing more current than the strip is able to take.
  • The power strip is connected to a device that is too heavy-duty in terms of wattage, such as a microwave oven or washing machine.

Overloading can produce costly damage to both your devices and the power strip itself.

In a worst-case scenario, overloading can result in dangerous fires.

Power strips with inbuilt circuit breakers are therefore a much safer alternative compared to those without because if overloading were to happen, the current will be stopped before any lasting damage occurs.

How Do You Tell if Your Power Strip Has a Circuit Breaker?

If a power strip does have a circuit breaker it may be evident in the form of a switch on the end closest to where the wire is connected. This can double as an ‘ON/OFF’ switch.

These switches also commonly have inbuilt red LED lights for added visibility in the dark.

However, you cannot be certain that, just because there is an illuminated switch on your power strip, your power strip definitely has a circuit breaker.

Some power strips may have a similar switch, but no circuit breaker.

These power strips will not trip or automatically shut off in the event of an overload, but will instead simply begin to fail by overheating or melting the casing.

This is incredibly dangerous and can potentially cause a fire.

Other power strips may have a circuit breaker in the form of a fuse, which will need to be replaced once it has been damaged.

The most fail-safe method to know for certain whether your particular brand of power strip has an inbuilt circuit breaker is to either read through the instruction manual and outer packaging or contact the manufacturer directly.

Do All Power Strips Have Circuit Breakers?

Unfortunately, the truth is that even though most power strips do have circuit breakers, not all do.

This is why it is imperative that you check whether or not your power strip does indeed have a circuit breaker.

If you’re in the market for a new power strip make sure you buy one that offers the protection that you need.

Read this blog here about do power strips have surge protectors?

What Is the Difference Between a Circuit Breaker and a Surge Protector?

So you’ve got to grips with what exactly circuit breakers do in order to prevent electrical damage, but you may be wondering what a surge protector is and what the difference is between the two.

First of all, it’s easy to confuse them, and that’s because they both help to ensure that the electrical system that you are using has a form of specific protection.

However, there are important differences to keep in mind as they are designed to protect in some different ways.

Pitting Circuit Breakers & Surge Protectors Head to Head

Let’s put these two guardians of electronic protection up against each other to really compare what each of them brings to the table:

  1. Their Specific Arenas Of Protection
  2. The Longevity Of Protection
    • A surge protector will give you around 2 to 3 years of protection whereas a circuit breaker can deliver its specific protection for over double that.
    • A circuit breaker can cope with maximum power loads, however, a surge protector cannot.
    • Due to the circuit breaker’s ability to deal with high capacity power loads its lifespan could reach the 10-year mark.
  3. The Specific Protection That They Each Provide
    • Surge protectors do what’s expected – it’s in the name! They will detect power surges or sudden spikes in voltage.
    • When a spike does happen the surge protector will sever the electrical current to the specific appliance it is connected with.
    • A circuit breaker will cut electrical current whether an overload is detected, there is a short circuit, or there is faulty wiring.
    • The key difference here is that a circuit breaker does not simply protect the appliances, but also protects the circuitry. This is especially important in consideration of protecting power strips.
  4. What Happens After The Problem Has Been Resolved?
    • Your surge protector needs to be reset manually after it has shut off due to a surge.
    • The circuit breaker will however simply reset itself once the overload or short circuit has been fixed.
    • This automatic feature of a circuit breaker sets it apart in terms of convenience.
  5. Capacity & Protection
    • Joule ratings and response time are key factors in measuring surge protectors’ ability to perform their functions well.
    • A high joule rating and a low response time will give your appliances better protection if a power surge does occur.
    • A circuit breaker’s capacity to handle power surges is measured in amperes.
    • Circuit breakers can come in two forms – magnetic and thermal.
    • The protection capacity of a circuit breaker is either 7200 amperes (thermal circuit breaker) or 16000 amperes (magnetic circuit breaker). To clarify, a circuit breaker can handle a larger amount of maximum load than a surge protector.
    • A circuit breaker has what’s called an ‘internal circuit capacity‘, however, a surge protector does not.
    • This internal resistance found in circuit breakers means that all the appliances that are connected ‘downstream‘ from the circuit breaker are protected from being negatively impacted by the electrical current.
  6. Overcurrent/Overload Protection
    • Circuit breakers automatically trigger a complete disconnect once they detect excess current and then the power is completely switched off.
    • A surge protector does not have an internal overcurrent protection capacity like the circuit breaker employs.
    • What this means is that a surge protector will provide resistance to excess current, but will not cut the power with full disconnection. Instead, they absorb the excess or redirect it.

The bottom line here is that a circuit breaker should prevent the circuitry/wiring from overheating and potentially causing a fire.

However, a surge protector can prevent a specific appliance from being fried by a sudden voltage spike, such as a lightning strike or a power surge.

What Happens if You Don’t Have a Circuit Breaker in Your Power Strip?

So as we’ve seen, circuit breakers provide protection, but what if your power strip doesn’t have one?

If your power strip doesn’t have a circuit breaker then you could be putting your home at risk and if you make a mistake in the way you are using your power strip the results could be disastrous.

The circuit breaker helps ensure that if you accidentally overload your power strip then that overload will be detected and the power running to it will be disconnected.

However, without that piece of technology playing its part, you could overload your power strip without realizing.

4 Signs That Your Power Strip Is Overloaded

If your power strip does not have a circuit breaker then be vigilant for the following:

  1. Signs Of Smoke Or Fire
    • This is pretty obvious and is a sure sign that your power strip is overloaded.
  2. The Casing Of Your Power Strip Has Begun To Melt
    • This is a tell-tale sign that there is too much power running through your power strip and the heat has caused it to melt.
  3. Is Hot To The Touch
    • Remember, that your power strip has certain limitations that should not be exceeded. If your power strip feels hot to the touch then check what you have plugged into it.
    • If your devices require more wattage than your power strip can handle then immediately disconnect them.
    • Devices that need a large amount of power will gradually cause your power strip to heat up if they exceed the power strip’s capacity.
  4. The Fuse Blows
    • If the fuse blows inside your power strip then this could indicate you’ve overloaded it.
    • It also may indicate that there is faulty wiring at play.
    • Either way, it’s time to stop using it and either have it repaired or better yet – purchase a new one with a circuit breaker.

Read this blog here about do power strips protect against lightning?




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