What exactly is the difference between a surge protector and a fuse? Can a fuse protect the electronic devices from lightning instead of surge protector?
Last Updated: 22.06.2025 08:16

At one ohm, the resistor has a maximum of 1 watt power.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
One
What is the most clever way you have seen someone respond to road rage?
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
So, the voltage could go up to 500 volts, and the fuse will not open up.
First Sentence:
Your Blood Test Can Now Track Junk Food Consumption - Indian Defence Review
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
He then describes Rainy Season and Lightning.
The bolt then partially travels down the line to your home.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
In schematic diagrams this is the symbol for a fuse:
These devices are installed between the “hot” and “neutral” and protective ground.
The other is “what does a “fuse” do?”
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
Little-known cells might be key to human brain’s massive memory - The Washington Post
2024–09–27 [ Mohan Rajaratnam Mohan Rajaratnam ] . Thinks you can get free electricity from nothing : Mohan Rajaratnam's answer to Is it possible to generate free electricity at home using a magnet or other low-cost methods? If so, how does it work?
Lightning arrestor is a spark-gap device, and can be installed anywhere. What is important, is that the wire is thick enough to withstand the lightning bolt and conduct the energy away from the building.
Upvotes:
Can I study a master’s in travel and tourism in Sweden within a budget of 5 lakhs INR?
There are three different concepts here that are getting confused.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
It also is a device that limits the change in current flow.
Fed on Hold Leaves Wall Street Asking What It Will Take to Cut Interest Rates - Bloomberg.com
This one hit behind the barn.
but this device (an Inductor) … impedes the rapid changes in the current.
Edit 2024–10.
401(k) millionaires fell in the first quarter — but it’s not all bad news - MarketWatch
There is no harm in having the surge suppressor along with the fuse in the circuit. The fuse will not open up until the current melts the link. This will take time, and in the interim, that jolt will get transmitted into the power supplies.
A fuse is a non-resetable over current circuit protector.
It seems Mohan does not understand the difference between a comment and an Answer.
Study Links Gut Bacteria to MS Risk and Reveals Key Triggers - Neuroscience News
the problem then depends on "how fast does the fuse operate?".
The third is lightning and “how it gets conducted into a home.”
“ A surge suppressor is the one which is connected at the input supply so that when there is a sudden change voltage it bypasses thereby protecting the (circuit) and electronic components”
What’s the best way to monetize email subscribers?
At the secondary, it is 1000 times less.)turns ratio). If it gets hit with a 100,000 volt bolt of lightning then the voltage arrestors conduct and clamp the voltage down to line voltage, ( but a small amount leaks down the line). This is the problem.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
2024–10–10[John johnson John Johnson ]
Would you let your son wear leggings to school?
but I think this circuit , shows a few more pieces.
What is lightning?
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Nvidia CEO Pays Tribute To Late Nintendo President Satoru Iwata In New Switch 2 Video - Kotaku
2024–10–14 [Omar Gharbi Omar Gharbi ]
One is “what exactly is in a ‘surge protector’ ? ”
This device then solves the entire problem.
Redefining physics to roll a ball vertically - Phys.org
But… the neutral is now “floating” because of the 1 ohm resistance.
What does a fuse do?
(Dc diagram shown, AC is similar).
a photo is worth a thousand words.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
These are simplified answers to the original question, and does not change anything I wrote above.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
Because the load is inductive, the current lags the voltage.(by a bit).
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
A circuit breaker is similar, but is resettable.
I post the exact comment here.
This is where the MOV conducts again, and dissipated the energy.
Barnstars:
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
eight
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
what exactly is a ‘surge’ protector?
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
This is where this question deviates from being a 'generic' question, and becomes more specific.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
For this case there are devices called Metal oxide varistors (MOV).
[image of Common-mode choke]
The MOV will conduct when the voltage exceeds 50% of line voltage.
2024–10–16 [ OO OLAOYE OYEBODE ]
This is 'the assistant's answer'
There are two important concepts here.
This is a photo where a lightning bolt took out a home's complete mains distribution box, and a lot of electronic gear as well.
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
He then describes the function of a fuse.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
An AC voltage/ current source, and an ac inductive load.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
so, what happens?
At least they know the answer if they wanted it.
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
Once the voltage goes over 0.0650 volts, then this fact can be used to amplify the difference, and turn the circuit breaker off , furthur down the line. Essentially that is what a RCD/GFCI does, it compares the incoming current, to the outgoing current, and if the difference between the two currents is over 5mA, then it trips the circuit breaker.
He then asserts :
[old diagram got deleted by accident]
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
This is an electronic circuit designed to clamp voltages so that the Voltage Potential that appears at the outlet is never going to exceed the nominal value.
But it can get overloaded, and no longer works.
Now when you have a certain ac resistance, then a current flows in a loop.
This is a high voltage low current spike that comes down the line because of the power poles being struck, and the voltage suppressors activating on the primary side of the transformer.
nine
Here is a simplified AC power diagram.