So TVS Diodes are primarily used for ESD and EFT suppression not surges that have longer duration (for which you can use MOVs, etc.)
What typically happens if the TVS diodes experience a longer surge? Do they simply become less effective or do they typically explode?
I had a TVS Diode dramatically explode. In this situation the line didn't have a MOV or GDT.
I am wondering whether this is typically what you would expect if there is no MOV/GDT/Fuse or other type of protection?