While some heavier pups come with electric brakes. The lighter ones usually don't. We had 5 pups over the years. The last one, a 12' box Viking, had a GVWR of 2600lbs. None of them, including that one had brakes. And in truth. I never felt the need for them.
We towed them with a 1978 CJ5, A 1989 Ranger, a 1998 Grand Cherokee, and a 1996 F150. Never a problem. I could stop any of them as quick as I can the 31' 6000lb TT.
Problem with trailer brake, is that. Unless there is some weight on them. They just bounce and slide. At 2600lbs. You have to dial the power so low to stop the sliding. You have almost turned them off.