OVER-VOLTAGE AND OVER-CURRENT POWER LINE PROTECTORS, PROTECTORS ASSEMBLIES, AND STRUCTURAL PARTS THEREOF; WIRELESS AND WIRELINE CO-AXIAL OVER-VOLTAGE PROTECTORS, PROTECTOR ASSEMBLIES, AND STRUCTURAL PARTS THEREOF; DATA LINE OVER-VOLTAGE PROTECTORS, PROTECTOR ASSEMBLIES AND STRUCTURAL PARTS THEREOF; TELEPHONE LINE OVER-VOLTAGE PROTECTORS, PROTECTOR ASSEMBLIES, AND STRUCTURAL PARTS THEREOF; OVER-VOLTAGE GAS TUBE PROTECTORS AND RELATED APPARATUS, NAMELY, SURGE ARRESTER TUBES, STATION PROTECTORS, PROTECTOR ASSEMBLIES, SURGE PROTECTORS, AND GAS TUBE ARRESTERS; ELECTRONIC COMMUNICATIONS TESTING UNITS TO TEST TELEPHONE LOOPS, TELEPHONE TRUNKS, PAIR GAIN SYSTEMS, PAIR GAIN LOOPS, DATA CIRCUITS, CELLULAR RADIO CIRCUITS, SATELLITE CIRCUITS, AND ANALOG AND DIGITAL TRANSMISSION FACILITIES; MODULAR COMPONENTS FOR TELECOMMUNICATIONS SYSTEMS, NAMELY, SPLICE TRAYS, SPLICE SHELVES, PATCH PANELS AND SPLICE CLOSURES FOR MOUNTING, ROUTING AND STORING FIBER OPTICS CABLES; TIME RELEASE REMOTE LOOP DISCONNECT FOR USE IN REMOTELY DISCONNECTING COMMUNICATION AND ELECTRONIC INSTRUMENTS; LATCHING REMOTE LOOP DISCONNECT WITH AUTOMATIC RESET FOR USE IN REMOTELY DISCONNECTING COMMUNICATION AND ELECTRONIC INSTRUMENTS; UNIT FOR PROVIDING CONTINUOUS BALANCED OR MOMENTARY GROUND RESISTANCE AND ISOLATING RINGERS FROM GROUND DURING ACTIVE MODE OF COMMUNICATION