Leviton Catalog - Womack Electric Supply Company

66-CONNECTING BLOCKS66-Connecting BlocksThese industry-standard blocks are used in equipment rooms to connect voice and data networkwiring to customer premises equipment. They are also used in remote and intermediatewiring closets throughout larger installations as common connecting points for nearby equipment.Constructed of high-impact, fire-retardant molded thermoplastic, Leviton connectingblocks utilize phosphor bronze quick-connect insulation displacement clips for ease ofinstallation, and proven mechanical and electrical reliability.The 66 blocks may be installed individually or in pairs in a cross-connect system to facilitatesubsequent adds, moves, and changes. In a cross-connect system, jumper wires are used tomake connections between blocks. Stations can then be disconnected and reassigned withoutdisturbing station wire—simply by moving the jumpers. Bridging clips can sometimes be usedon split 50 blocks in place of jumpers.AM BLOCK: 25-PAIRA Contains 50 rows, each with a single clip having four slots as shown at left. Incoming cablepairs are connected by terminating the tip conductor on the leftmost slot of one row, andthe ring conductor on the leftmost slot of the next lower row. The three remaining slots ineach clip are available for cross-connects.SPLIT M BLOCK: 50-PAIRB The split M block, like the 25-pair M Block, contains 50 rows of clips, but instead of one4-slot clip, each row contains two separate 2-slot clips. By terminating 25 incoming pairson the slots of the left-hand clips and an additional 25 pairs on the slots of the right-handclips, 50 cross-connects can be made. Alternatively, bridging clips may be used to connectthe two adjacent sets of clips together. (See Page L39.)M BLOCK WITH FEMALE CONNECTORC 50-pair M Block with prewired, pretested 25-pair female connector on left side fanningstrip to speed connection of incoming pairs.M BLOCK WITH FEMALE AND MALE CONNECTORSD 50-pair M Block with prewired, pretested 25-pair female connector on left and maleconnector on right for fastest installation. Simply plug in connectors and insert bridgingclips to complete the connections.CONNECTORIZED DEMARC BLOCKE Designed for use at the demarcation point, this 50-pair M Block includes mounting bracketand snap-on orange cover with designation strip. Prewired, pretested 25-pair femaleconnector mounted on right side speeds connection of customer premise equipment to thenetwork interface.66-Connecting Blocks UDESCRIPTIONCAT. NO.[A] M Block: 25-pair (66M1-25) 10"H x 3 5 /16"W x 1 3 /16"D 40066-M25[B] Split M Block: 50-pair (66M1-50) 10"H x 3 5 /16"W x 1 3 /16"D 40066-M50[C] M Block with female connector (66M1-50W) 10"H x 3 5 /16"W x 1 3 /16"D 40066-0MW[D] M Block with female and male connectors (66M1-50W2) 40066-MW210"H x 3 5 /16"W x 1 3 /16"D[E] Connectorized Demarc Block (66M1-50R) 10"H x 3 13 /32"W x 2 3 /4"D 40066-0MRNote: Numbers in parentheses refer to industry product designation.BCDCopper ComponentsEFor answers to technical questions, call Leviton’s Techline at 1-800-722-2082L37