"Scene breaks" refers to a transition or interruption in a story where the narrative jumps from one location or time period to another. It's a way to show a change in setting, characters, or events within a story. Full definition
I have an image I use for scene breaks. (jamigold.com)
We commonly use enlarged caps at the beginning of chapters and small caps at both the beginning of chapters and after scene breaks. (bbebooksthailand.com)