Characteristics and ratings of solid-state, self-restoring overcurrent protectors for the protection of telecommunications installations (Study Group 5)
This Recommendation applies to 2-terminal, series connected, solid-state, self-restoring overcurrent protectors (OCPs) used in surge protective devices (SPDs) and telecommunications equipment. These OCPs are directly connected to a device or equipment port and provide overcurrent protection and coordination functions for telecommunications installations during lightning surges and AC power faults, in accordance with [b-ITU-T K.11]. The port test levels and criterion are defined by [ITU-T K.20], [ITU-T K.21] and [ITU-T K.45], as appropriate. [ITU-T K.44] supports these three equipment performance ITU-T Recommendations with test circuit details and application guidance.