self-limiter
nounUK /ˌself ˈlɪmɪtə/
US /ˌself ˈlɪmɪtər/
A self-limiter is something that stops itself from going too far.
The app has a self-limiter that turns it off after an hour.
OTHER MEANINGS
2. A person who holds themselves back on purpose.
He is a self-limiter who never asks for more than he needs.
3. A device or setting that keeps a machine from working too hard.
The motor's self-limiter cuts the power when it gets too hot.
4. A habit of mind that keeps someone from trying new things.
Fear of failing can become a self-limiter.