Material: 1.Insulator: PBT 30% Glass Fiber (Meet UL94V-0). 2.Contact:Copper Alloy. 3.Contact Plated:Selective Gold over Nickel Plated. 4.SHELL:Steel with Nickel or Tin or Zinc Plated. Specification: 1.Current Rating:5 Amps. 2.Withstanding Voltage:AC 500V for 1 Minute. 3.Insulation Resistance:1000M OHM Min. at DC 500V. 4.Contact Resistance:15m ohm Max. 5.Operating Temperature:-40 C~ 105 C