The NTE8242 is a 15A/277VAC Thermal Cut-off or Thermal Fuse with 240°C functioning and 200°C holding temperatures, axial leaded terminals. The TCO (thermal cut-off) responds to temperature by interrupting an electrical circuit when the operating and/or environmental temperature exceeds the thermal rating of the device. This fuse is accomplished when the internal organic pellet experiences a phase change, allowing the spring activated contacts to permanently open the circuit. They are miniature, non-resettable temperature sensitive devices designed to prevent appliances and electronic equipment from overheating.