High Temperature DC Power Jacks & Plugs Switchcraft DC Power Jacks and Plugs are designed with high-RTI thermoplastics that are capable of withstanding higher temperatures and current. These power jacks and plugs operate at a temperature ranging from -40ºC to 105ºC. The DC power jacks and plugs offer 24VDC resistive voltage. These power jacks and plugs feature 3-pound maximum insertion and 4-ounce minimum withdrawal operating force. The DC power jacks and plugs are ideal for applications with a high ambient temperature.