How to Choose PTC for the AC Supply. What are the basic specifications for the component selection?

 

Voltage, current, resistance, trip time, and form factor.

 

Voltage, current, resistance, trip time, and form factor.

Any specific reading to choose based on that, for example for 230V voltage AC, if we choose 250V like that

 

Any specific reading to choose based on that, for example for 230V voltage AC, if we choose 250V like that

You don't have much choice for line voltage fuses. From Littelfuse:

 

How to Choose PTC for the AC Supply. What are the basic specifications for the component selection?

What are you trying to achieve ?

 

What are you trying to achieve ?

I am designing the circuit first time so I don't know how to choose components for the design & what all the parameters to consider. Now I am designing a simple SMPS, I checked many sites I didn't find any.

 

A simple SMPS,
Ok, so what power, voltage in , voltage out , wat isolation voltage between input and output ?

 

A simple SMPS,
Ok, so what power, the voltage in, voltage out, wat isolation voltage between input and output?

Voltage In is 3 Phase Input 3 lines 220V to 240V AC, Voltage out 12V or 5V DC for isolation I didn't find any component yet. Current is 100A max

 

That doesn't sound like a "simple" switched-mode to me!
A PTC for that sort of power would be a chunk of Barium Titanate the size of a house-brick.

As it's three-phase shouldn't the over-current protection disconnect all three lives at once?

 

Voltage In is 3 Phase Input 3 lines 220V to 240V AC, Voltage out 12V or 5V DC for isolation I didn't find any component yet. Current is 100A max

3Phase AC kills,
3 Phase SMPS are much more difficult than single phase
100A at 12 V, is enough to make one heck of a spark, and weld a screwdriver to the terminals.

So I'd like to ask what is your experience level ?

 

3Phase AC kills,
3 Phase SMPS are much more difficult than single phase
100A at 12 V, is enough to make one heck of a spark, and weld a screwdriver to the terminals.

So I'd like to ask what is your experience level ?

100A is not at the 12V out. needs to switch between 3 phases without stopping the work of the controller.

My experience level is 0 for the circuit design, that is why I am checking

 

You said
" Voltage In is 3 Phase Input 3 lines 220V to 240V AC, Voltage out 12V or 5V DC for isolation I didn't find any component yet. Current is 100A max "

Can you be explicit please

What current and voltage out do you require,