Yes I use resettable thermal fuses on my heated beds that use resistors. The PCB ones are self limiting because the resistance increases with temperature.
The other issue is the wiring has to be flexible and have a minimum bend radius enforced if the bed moves. If not it fractures one strand at a time until the wire starts burning.
The other issue is the wiring has to be flexible and have a minimum bend radius enforced if the bed moves. If not it fractures one strand at a time until the wire starts burning.