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Thermistor ?

Spike009

May 19, 2020
3
Joined
May 19, 2020
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Hi guys, I have what looks like 2 red thermistor that blew up. They are located between both of my 240v line and my neutral. Can anybody confirm thermistor could be located there and does anybody have a idea why the blew up. How do I know what replacement part to get now that they blew up and that the number is gone.
 

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Spike009

May 19, 2020
3
Joined
May 19, 2020
Messages
3
Thank you for your answers. Yes it must be MOV. Thanks for getting me on the right track. I will try to find out why the voltage went up and blew up both of them. What do you guys think? Could the problem come directly from the varistors?
 

Harald Kapp

Moderator
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Nov 17, 2011
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Could the problem come directly from the varistors?
Unlikely. Varistors usually are inactive, they become conductive in case of an overvoltage which cannot be caused by the varistors themselves.
If designed correctly, that is.
The device probably experienced a surge event on the mains line.
 

Spike009

May 19, 2020
3
Joined
May 19, 2020
Messages
3
Thank you for your answers. Yes it must be MOV. Thanks for getting me on the right track. I will try to find out why the voltage went up and blew up both of them. What do you guys think? Could the problem come directly from the varistors?
No fuses blown up on the card.
 
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