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 07:20

So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
This is where the MOV conducts again, and dissipated the energy.
At one ohm, the resistor has a maximum of 1 watt power.
The doctor said 'be happy.' Music therapy can help cancer patients do that - NPR
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.
These are simplified answers to the original question, and does not change anything I wrote above.
Now when you have a certain ac resistance, then a current flows in a loop.
What are the advantages of forming strategic partnerships?
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
nine
Can the fuse protect the electronic devices from lightning instead of a surge protector.
Ipsam commodi repudiandae aliquid.
eight
An AC voltage/ current source, and an ac inductive load.
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.
Why is the covert narcissist actively avoiding me when they see me everyday?
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
The MOV will conduct when the voltage exceeds 50% of line voltage.
There are three different concepts here that are getting confused.
Enim eius molestiae qui iste impedit qui voluptatem iste.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
It also is a device that limits the change in current flow.
Procter & Gamble to cut 7,000 jobs as part of broader restructuring - CNBC
The other is “what does a “fuse” do?”
One is “what exactly is in a ‘surge protector’ ? ”
He then describes Rainy Season and Lightning.
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
a photo is worth a thousand words.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
The third is lightning and “how it gets conducted into a home.”
‘I’m a Delicate Guy’: Chris Evans on Sharing His Sensitive Side in ‘Materialists’ - Rolling Stone
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
This is 'the assistant's answer'
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
Could Patriots cut Stefon Diggs and owe him nothing? It’s complicated. - NBC Sports
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?
One
2024–10–16 [ OO OLAOYE OYEBODE ]
What is the reason for the high rate of unmarried individuals in America, particularly among males?
This one hit behind the barn.
These devices are installed between the “hot” and “neutral” and protective ground.
In schematic diagrams this is the symbol for a fuse:
Milky Way arcs over Kitt Peak National Observatory photo of the day for June 16, 2025 - Space
But it can get overloaded, and no longer works.
At least they know the answer if they wanted it.
For this case there are devices called Metal oxide varistors (MOV).
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
What is lightning?
He then asserts :
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
but I think this circuit , shows a few more pieces.
[old diagram got deleted by accident]
2024–10–14 [Omar Gharbi Omar Gharbi ]
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
Barnstars:
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
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.
This is where this question deviates from being a 'generic' question, and becomes more specific.
the problem then depends on "how fast does the fuse operate?".
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
What does a fuse do?
A fuse is a non-resetable over current circuit protector.
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.
“ 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 exactly is a ‘surge’ protector?
But… the neutral is now “floating” because of the 1 ohm resistance.
[image of Common-mode choke]
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.
He then describes the function of a fuse.
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
(There is no concept of polarity, in the loop because the current changes direction 100 to 120 times a second (power frequency).
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
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.
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.
It seems Mohan does not understand the difference between a comment and an Answer.
but this device (an Inductor) … impedes the rapid changes in the current.
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
The bolt then partially travels down the line to your home.
2024–10–10[John johnson John Johnson ]
A circuit breaker is similar, but is resettable.
Upvotes:
Here is a simplified AC power diagram.
I post the exact comment here.
so, what happens?
So, the voltage could go up to 500 volts, and the fuse will not open up.
This device then solves the entire problem.
Because the load is inductive, the current lags the voltage.(by a bit).
(Dc diagram shown, AC is similar).
First Sentence:
There are two important concepts here.
Edit 2024–10.