Relays or Fuses?

I need help with something. My car is 100% stock.

My 25A relay (fuse?) blew. It is the one that controls the power seats and power mirrors. The box is under the rear seat - and the 25A relay (fuse?) isn't a blade type clear fuse. I call it a relay because it has a metal box, with blades for the connector.

I have checked the local auto parts stores and they don't have anything that remotely resembles it. They do have, however, 25A fuses. They do fit, but they're the plastic blade types - and they continue to blow.

My first thought is, "this is a relay and putting fuses in just won't work". My second thought is, "maybe there is some short somewhere in the car that is causing them to blow".

I don't have any aftermarket items in this car... so I'm thinking any kind of grounding out or short would be kinda rare. It is in really good condition, really good shape. No leaks or water or corrosion anywhere.

Does anyone know if this is a relay and I really do need to find the right relay to put in there? Or is a fuse suitable if is 25A (same as the original item)?

Thanks!

I highly dought its a relay...A relay is an electrical switch that opens and closes under the control of another electrical circuit. In the original form, the switch is operated by an electromagnet to open or close one or many sets of contacts. a relay will have more than 2 spades...

you need to find out what amp fuse that is, can you take it apart?

then you need to figure out why it popped.. a short,over working the power seat motor,maybe something is stuck,out of alignment stressing it.