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?
10.06.2025 03:01

Barnstars:
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.
I post the exact comment here.
This nonhormonal hot-flash remedy gives options to women, experts say - The Washington Post
so, what happens?
It also is a device that limits the change in current flow.
But during the surge, the fuse will not blow if it is a longer duration and lower value )10 to 50%).
Who is someone that inspires you?
These devices are installed between the “hot” and “neutral” and protective ground.
At one ohm, the resistor has a maximum of 1 watt power.
This is the picture of an electronic coil of wire wound around a core of magnetic material.
Paris Erupts in Celebrations, Riots After PSG Wins Champions League - WSJ
One is “what exactly is in a ‘surge protector’ ? ”
[old diagram got deleted by accident]
It’s been three xxx five werks, and there has been no response to my follow on query on his Commment to my answer.
Why is going on a date today so much different than it was when I was young?
Mohan forgets that a fuse is a one-time device, and needs to be replaced if it is tripped.
The bolt then partially travels down the line to your home.
nine
Nintendo Switch 2 Size Comparison vs. Original Switch vs. Steam Deck - Gizmodo
The other is “what does a “fuse” do?”
These are simplified answers to the original question, and does not change anything I wrote above.
2024–10–10[John johnson John Johnson ]
Our planet’s oxygen levels will drop, and there’s no way to stop it - Boy Genius Report
eight
This one hit behind the barn.
Fuses, on their own, then operate much slower than the MOV variable resistance, during the lightning strike.
But it can get overloaded, and no longer works.
Would individual surge supressors have save this equipment? most likely, since the surge supressor would take the jolt instead of the electronic components.
There are three different concepts here that are getting confused.
Why is it easy to make money in the USA?
For this case there are devices called Metal oxide varistors (MOV).
It seems Mohan does not understand the difference between a comment and an Answer.
This is where this question deviates from being a 'generic' question, and becomes more specific.
So, the voltage could go up to 500 volts, and the fuse will not open up.
the problem then depends on "how fast does the fuse operate?".
“ 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”
Poland election: Conservative historian Nawrocki wins presidential vote - BBC
“ … to protect building, lightning arrestor, is provided above building and directly connected to earth.”
An AC voltage/ current source, and an ac inductive load.
OK, this is Mohan Rajaratnam’s definition of a Surge suppressor.
Edit 2024–10.
but this device (an Inductor) … impedes the rapid changes in the current.
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.
Summer Game Fest releases hype trailer ahead of weekend of reveals - Eurogamer
Is the question then , "why buy a surge supressor, if the fuse alone protects the electronic circuits from a lightning bolt?".
When the current is 200% of the rated value , it will “go open” (the link metal melts) and protect the device.
what exactly is a ‘surge’ protector?
What is so great about Jiraiya?
P = e* I, so since I is 16 amps, then the voltage dropped is 1/16 volt or 0.0650 volts.
A circuit breaker is similar, but is resettable.
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.
2024–10–00 [ Ammar Mahdi ] Ammar Mahdi
“ A fuse is a device which protects the (circuit) against overload and short circuit.”
This device then solves the entire problem.
The third is lightning and “how it gets conducted into a home.”
2024–10–11 [Bobby Sanchez Bobby Sanchez ].
So combined with a device called a MOV or Metal-oxide-resistor, then forms the 3rd part of a “surge suppressor “.
A fuse is a non-resetable over current circuit protector.
Now when you have a certain ac resistance, then a current flows in a loop.
(Dc diagram shown, AC is similar).
There are two important concepts here.
And this is the problem alone. Is the power supply in the equipmemt designed with a lightning strike in mind? Some yes, others, no.
Here is a simplified AC power diagram.
One
In schematic diagrams this is the symbol for a fuse:
so, the loop of wire then, when put together with another loop reduces the ‘noise’ on a power line.
He then asserts :
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.
This is where the MOV conducts again, and dissipated the energy.
but I think this circuit , shows a few more pieces.
The MOV will conduct when the voltage exceeds 50% of line voltage.
Upvotes:
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.
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?
2024–10–14 [Omar Gharbi Omar Gharbi ]
This is 'the assistant's answer'
If the nominal power is 4,000 watts then the current at 230volts is 16 amps.
a photo is worth a thousand words.
[image of Common-mode choke]
(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 the function of a fuse.
2024–10–16 [ OO OLAOYE OYEBODE ]
At least they know the answer if they wanted it.
2024–10–11 [Victor Olarewsju Victor Olarewaju ]
What does a fuse do?
So, it’s possible that these devices from Trip Lite have addition suppression devices, these ones seem to be sturdy.
Because the load is inductive, the current lags the voltage.(by a bit).
First Sentence:
What is lightning?
He then describes Rainy Season and Lightning.
Can the fuse protect the electronic devices from lightning instead of a surge protector.
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 a photo where a lightning bolt took out a home's complete mains distribution box, and a lot of electronic gear as well.
But… the neutral is now “floating” because of the 1 ohm resistance.