The BIX block features back-to-back connections in a one-piece modular design. This is a drastic contrast to the contacts of the 110 blocks that are traditionally tin-plated and positioned at a 90-degree angle. The Krone block features silver-plated contacts positioned at a 45-degree angle to the axis of the wire. (Englewood, CO) and later brought to the United States continues to bear the Krone name. A unique block style developed in Berlin, Germany by Krone Inc. Krone and BIXīut the world of IDC blocks reaches beyond the basic 66 and 110 styles. Since the quiet front is lacking on the 66 blocks, a cover is often recommended.Īyre points out that, compared with 66 blocks, "110 blocks have a far superior labeling system that not only snaps into place but is erasable." This is particularly important for post-installation testing and maintenance procedures. The 110 block's construction also provides a quiet front, meaning there is insulation both above and around the contacts. Wires are fed into the block from the front, as opposed to the side entry on the 66 block.Ĭhevarie notes that the 110 block is "a back-to-back connection whereas the 66 block is a side-by-side connection." This helps to reduce the space requirements of the 110 block and reduce overall cost. The 110 block is a smaller unit featuring a two-piece construction of a wire block and a connecting block. Often used for large installations, the 110 block evolved out of the 66 block, again from the lab oratories of AT&T. "They can handle up to Category 5E but are not as efficient or cost-effective as 110 blocks." Migrating to the 110
"It is a misnomer that 66 is only for voice," he says. Marine Corps, says that he has even seen 66 blocks used for Category 5 data transmission. In fact, James Wynn, a civilian technician for the U.S. James Ellis, global product manager for Molex Premise Networks (Hudson, NH), says, "The 66 block is primarily used for voice communications because of the clip size." But while it may have begun as a tool for the voice segment of the market, it evolved to become a tool for the data side, too. The 66 block, originally designed and still widely used for voice applications, contains contacts that are easily accessible from the block's front. Additionally, these blocks have fanning strips, which Panduit's Ayre sees as extremely poor for labeling due to the small surface area provided for recording important identification information. The 66 block is de-signed with con-tact accessibility from the front, allowing wires to enter from either side. According to Benoit Chevarie, NORDX/CDT's (Pointe-Claire, Quebec, Canada) product manager of IBDN connectivity, its primary purpose was to service the central-office-type connection. The first block introduced to the market became known as the 66 block.
Connection is achieved once wires are placed into the IDC block's contacts, and then punched down via a punchdown tool, pressing the wires against the contacts to form the gas-tight connection.
Idc terminal blocks plus#
IDC blocks are considered an advancement over earlier technologies because they allow for a gas-tight connection without the removal of the cable's insulation, plus they require fewer steps to secure the connection. These evolved into wire-wrap systems and finally to the IDC block. Ayre notes that before the invention of the IDC block, there were a variety of connection systems, such as screw terminals. Like many integral components of today's cabling systems, IDC blocks were born out of the technological genius of AT&T Corp. Panduit Corp.'s (Tinley Park, IL) product manager, George Ayre, identifies it as simply connecting copper wires: "It is the most efficient and cost-effective method of connecting insulated copper wire in the world." While this tool has many names, such as punchdown block, it has one very clear function. It can be argued that the cabling industry's version of this question is, "What is the easiest way to connect point A to point B?" As the market is flooded with various connection methods, IDC blocks (see table on page 76) are an economical and easy-to-use method of connecting point A with point B.Īn IDC block, often called a connecting block, is defined by BICSI (Tampa, FL) as an insulation displacement connector.
What is the quickest way from point A to point B? This has been an age-old question, with the typical answer being: a straight line.
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