A 66 block (also M-Block) is a type of punchdown block used to connect sets of wires in a telephone system. 66 blocks are designed to terminate 22 through 26 AWG solid copper wire.
Note: Clear hinged cover included
Accessories:
DY-66M1C: Orange/Blue Hinged Cover
Note: Hinged cover shown in picture is sold separately. Clear cover is included.
These blocks have the ability to transmit data up to 100MHZ
Exceeds 568B TIA/EIA Cat 5 performance specifications
Each row contains 4 clips but the right 2 clips are electrically isolated from the left 2 clips.
These circuit pairs are connected via the punch down tool by terminating the tip wire on the left most slot of one row and ring wire on the left most slot beneath the mating tip wore. You'll notice that phone companies punch down their wire on the left side of this 66-block, then the right side is wired to the customers location. Bridging clips can be used to connect the to center slots bonding the left to the right side of the 66-block then completing the circuit. That's how the phone company and the commercial account get in contact. Bridging clips can be easily removed. A cover is a great idea and is included with this block to prevent anything touching it and creating a short and damaging equipment, it is low voltage.
Check out the Low Voltage Product Talk blog for pictures on how NOT to install your 66-block.
Used in equipment rooms, remote and intermediate wiring closets to connect voice or data wiring to customer premise equipment, we offer a complete line of industry standard and Category 5 modular 66 blocks Network Interface Blocks, and associated equipment. Blocks are molded of flame retardant thermoplastic.
