MF-RX018/250-2 is a telecom-grade PTC resettable fuse designed for fast tripping protection in customer premise equipment and central office applications. This radial leaded device features a maximum operating voltage of 60 Vdc, maximum interrupt rating of 250 Vrms at 10.0 A, and a hold current of 0.18 A at 23°C. The initial resistance ranges from 0.8 to 2.0 Ohms at 23°C, with a one-hour post-trip resistance of 4.0 Ohms maximum. The device operates reliably across an ambient temperature range of -40°C to +85°C and is RoHS compliant with agency recognition including UL File Number E174545. It is commonly used in telecom infrastructure to protect against overcurrent conditions while meeting ITU-T K.20/K.21/K.45 and Telcordia GR-1089-C standards for intrabuilding applications.