Re: [PSES] Regulatory requirements for MOVs placed line-to-ground on AC mains ports?

Hi Rich: Thanks for your feedback on this topic. My impression is that the intent of the requirement for a fuse in series with an MOV is not related to concerns about protecting users from surge transients. I believe the intent of the requirement is to protect users from the effects of an M

Re: [PSES] Regulatory requirements for MOVs placed line-to-ground on AC mains ports?

I would like to attempt a response to question 2 regarding adequate breaking capacity. Fuses should have an ampere interrupt capacity (AIC) rating. A more extensive discussion can be found on an application note from Bussmann Fuse at this link