Abstract: A station protector, particularly for telephone lines, has a housing with wells in which are positioned protector module assemblies, one for each line. Each line is connected to a basket member positioned in the bottom of a well and having cantilever legs extending upwards. A protector module assemlby is insertable in the top of each well and a bottom electrode of the protector module pushes down the basket member against a spring bias. If no protector module assembly, or if only a housing of such an assembly without a protector module, is inserted in a well, the basket member moves up and the legs move into contact with a metal collar at the top of the well, the collars connected to a ground terminal. The protector module assemblies connect to the metal collars, as by being screwed into position.

Abstract: An electrical surge arrester module having a back-up external spark gap in its base assembly comprising an insulator plate perforated at points intermediate a terminal contact surface in said base assembly and a conductive plate at ground potential when said surge arrester module is in use.

Abstract: A connector assembly designed to be mounted on a telephone main distribution frame includes a connector base having a plurality of rows of channels formed on one face by ledges extending between elongated edges of the connector base, a ground plate having a conductive side and an insulating side and a plurality of pedestals. A first set of terminals extends through the pedestals, the ground plate and the connector base into the channels, and a second set of terminals extends through the pedestals, the ground plate and the connector base so as to project from the ledges such that the first and second sets of terminals maintain the connector base, ground plate and pedestals together.