I have a toy car, Mercedes Gls 63 12V Svart and I need to replace a fuse.

It comes with ZHONGZUI 68 Series 15A, which is quite big:



I found these in a local store, but they don't mention the voltage.

They are 15A, but they are way smaller.

I can still use them?

 

Yes. The voltage rating is an upper limit. If those fuses are for car electrical systems, they are fine at 12V.

 

Maybe, maybe not. But probably -- they look like automotive fuses, which would be rated at a sufficient voltage for your 12 V toy car system. In general, you need to use fuses that are rated for not only the current current, but also at least as high a voltage as the circuit it is protecting. There's also the question of how it blows, such as fast or slow.

 

Post #1 tells us it is a 12 volt car. So no voltage issue. I see two possible issues, which is if the connectors fit correctly, which will be obvious as soon as it is installed, and probably some scheme to keep the fuse from getting into mechanical parts of the car. A zip-tie can solve that issue. And what to do with all the money saved by using an automotive fuse.