Patent ID: 8314677
Filing Date: 2012-11-20
Classification: H01C

Abstract:
1. An overcurrent protective wire wound resistor comprising: a high-temperature opening core having: a second contact cap corresponding to the first contact cap of the high-temperature opening core and mounted around the high-temperature contractive insulation layer so that the high-temperature contractive insulation layer is sandwiched between the second contact cap and the first contact cap and the second contact cap is electrically insulated from the first contact cap, and having: a resistance wire mounted around the rod to correspond to the rod and electrically insulated from the low melting point conductive layer by the intervening high-temperature contractive insulation layer therebetween, wherein two ends of the resistance wire are respectively connected to the resistor connection seat and the second contact cap, and a melting point of the resistance wire is higher than that of the low melting point conductive layer.