MF-R500 is a radial leaded PTC resettable fuse designed for low voltage power supply protection in computers, peripherals, and general electronics. It features a maximum voltage rating of 30 V and maximum current rating of 40 A, with a hold current of 5.0 A and trip current of 10.0 A at 23°C. The device has an initial resistance of 0.03 O and a post-trip resistance of 0.05 O maximum, with a maximum time to trip of 14.5 seconds and typical tripped power dissipation of 3.00 W at 23°C. The fuse is constructed with cured, flame-retardant epoxy polymer insulating material meeting UL 94V-0 requirements, is RoHS compliant and halogen-free, and features radial leads with Sn/Cu plating. This device is ideal for circuit protection applications requiring automatic reset capability after fault conditions are cleared.