I am looking for a switch that only keeps contact while current is running. Once the current drops to zero the switch opens contact. Something like a circuit breaker that trips with no current. It should require the user to press the switch again after tripping. This is for a low voltage (24V) and low current circuit (<1A). Is there a name for this component?
If there is no off-the-shelf component that can do this I wouldn't mind assemble it from other components, but at the moment I'm not sure how to do it.