how to protect the circuit from high voltage

[hamsiii]

Hello all, I would like to ask you how to protect a circuit consists of microcontroller and RF modules (which need 3V and mA values) from a 1500V DC input connected to voltage divider.
Example is below and you can see that I do not need an over current protection:

 

[sadhna]

u can used heat snik

 

[milind.a.kulkarni]

One of the protection method will be use ESD diodes at the connector input....or snubber circuits.....

Good Luck

 

[hamsiii]

I think the resistors will not be heated as current through them is in uA (max mA). I did not know much about protection, however I think of some keywords as zener diode and fuse.

Also, will there be a problem in connectors of the 1500V due to high voltage? Will I need a physical component to control it?

 

[sadhna]

esd diode s the solution s gud for protecton

 

[milind.a.kulkarni]

Hi ....

Refer this for snubber circuit -
**broken link removed**

Good Luck