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The CEE DTTBQ-17/45 Bushing Surge Arrester is an M.O.V. surge arrester combined with a Loadbreak Bushing Insert. It mounts directly to the transformer bushing well. The Bushing Surge Arrester threads into a universal Bushing Well provide the same function as a Rotatable Feedthru Insert. Not only the Bushing Surge Arrester can connect with a Loadbreak Elbow Connector, but also protect the distribution systems form over-voltage. It is typically used at the end point of a radial circuit or at the open point of a loop-feed circuit to provide surge protection in a more compact configuration. CEE DTTBQ-17/45 Bushing Surge Arrester is molded with high quality EPDM insulating material, when mated with a comparably rated product, it provides a fully shielded insulating connecter for energized operation.CEE DTTBQ-17/45 Bushing Surge Arrester provides high voltage lighting and switching surge protection of transformers, cable ,equipment and other components typically located on underground power distribution systems. Proper placement, voltage selection and coordination with riser pole arresters minimizes damaging surge voltages by improving protective margins