Product:RH(K)2A Series Thermal Fuse,RH(Y)5A Series Thermal Fuse Rated Current/Voltage:2A/250V,5A/250V Rated Functioning Temperature: The temperature at which a thermal cut off changes its state of conductivity to open circuit with detection current as the only load. Fuse temperature: Functioning temperature of a thermal cutoff carrying current less thaan 0.01A and placing in an oil bath where temperature rises 0.25-0.5 per minute. Maximum Temperate Limit: TM is the maximum temperature at which mechanical and electrical properties of thermal cutoff can be maintained without resuming conductivity after functioning.