The Littlefuse Wickmann RUEF Series, 30V DC PolySwitch lead-free radial leaded resettable PPTC device has 3. 20A trip current and 8s trip time. It is generally used in applications like Satellite video receivers, industrial controls, transformers, computer motherboards, modems, USB hubs, ports, battery packs, phones, fax machine, printers, analog and digital line cards.Resettable and single-use overcurrent deviceWide range of form factor and termination methodsDevices compatible with high-volume electronics assemblyRoHS compliantLead-Free and Halogen-Free