A split-50 M or 66 Block with bridging clips
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Punch Down Tools

A punch block (also punchblock, punchdown block, quick-connect block and other variations) is a type of electrical connection often used in telephony. more...

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It is named because the solid copper wires are punched down into short open-ended slots known as Insulation-displacement connectors. These slots, usually cut crosswise (not lengthwise) across an insulating plastic bar, contain two sharp metal blades which cut through the wire's insulation as it is punched down. These blades hold the wire in position and make the electrical contact with the wire as well.

A tool called a punch tool or punchdown tool is used to push the wire down firmly and properly into the slot. Some will automatically cut any excess wire off. (Note that in crafts, a "punch tool" means a hole puncher, often for things other than paper.)

Punch blocks are a very quick and easy way to connect wiring, as there is no stripping of insulation and no screws to loosen and tighten. Punch blocks are often used as patch panels, or as breakout boxes for PBX or other similar key phone systems with a 50-pin RJ-21 (Amphenol) connector. They are sometimes used in other audio applications, such as in reconfigurable patch panels.

Examples

A 66_block (or "M Block") is used in telephone systems;

Read more at Wikipedia.org


Rj11 Rj45 Cat5 Network PunchDown Punch Down Impact Tool $4.99 Cat5 Rj11 Rj45 Network PunchDown Punch Down Impact Tool $5.39
Fluke D914S Impact Tool with Bix and 66/110 Blade $20.00 *Impact Punch down Tool Keystone Rj11 Rj45 110 Cable N7 $1.00
Ideal "Punchmaster Ii " Impact punch tool - New $19.99 Fluke Harris Adjustable Impact Puchdown Tool D914S $9.99
Professional Impact Punch down Tool For Rj11 Rj45 $3.99 Brand New Gb Punch Down Tool Pdt-110 $19.99
Professional Impact Punch Down Tool w 110/88+66 blade $14.99 Fluke Networks D814 Impact Tool New Ob Bin $24.50
Cat5 Rj11 Rj45 110 Keystone non Impact Punch Down Tools $1.99 Impact Punch Down Tool with 110/66 blades Cat5e Telecom $24.99
Fluke Networks Impact tool, model # D914s Brand new! $29.99 K18 Cat5 Rj11 Rj45 110 Keystone Impact Punch down Tools $1.58
Nib Siemon S814 Punch Down Impact Tool W/ 110 Blade Wow $19.99 Usb 2.0 to Ide Adapter Cable for 3.5 Hdd Hard Disk Pwr $2.99
Punchdown tool Impact style w/ 110 Blade $15.50 *110 Rj11 Rj45 Keystone Impact Punch down Cable Tool N7 $1.00
DataShark Non-Impact Punchdown Tool & Stripper Bundle $18.99 New Fluke D814 Automatic Impact Tool With EverSharp110 $57.99
5 pairs network Termination Impact Punch Down Tool $8.00 Ideal 35-483 Punchmaster Ii SpringLoaded Punch Down New $16.50
110 Impact Punch Down Tools Cat5 Rj11 Rj45 Keystone N7 $1.00 Impact Punch down Tool For 110 Rj11 Rj45 Keystone Ln7 $1.00
Insertion & Flaring Tool for Rg-6 Coaxial Cable $8.49 M66 1-50 Punch Down Blocks 3 Pack Gruber $27.21
Sperry Professional Punch Down Tool Model Pd-50 $22.99 Ideal 35-492 Non-Impact Punch Down Tool New Terminate $2.99
Punch Down Block 110 Style 300 Pair - Cat5E Gruber $32.08 110 Rj11 Rj45 Keystone Impact Punch down Cable N7 $1.00
Network PunchDown Punch Down Impact Tool Rj11 Rj45 Cat5 $5.29 Rj45 Cat5 Rj11 110 Keystone Impact Punchdown Tool h8 $1.00
Fluke JackRapid Punchdown Tool 10059620 $34.95 Fluke Networks Punch Down Tool $1.30
Fluke Networks Is60 Pro Tool Kit New $51.00 Steren Punch-Down Tool &Network Utp Cable/Wire Stripper $5.49
Harris Is60 Pro Telecom Punch-Down Tool Impact 110 Kit $4.99 Harris D914 S Telecom Punch-Down Tool Impact 110 Blade $9.99
New Impact Punch Down Tool with 110 Blade, New !!!! $14.99 Gardner Bender Wire Stripper Punchdown Tool Cat 3,5e $19.99
4 Siemons S66M150 punch down blocks $15.99 **Nib** Datashark Network Tool Kit $21.99
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Prices current as of last update, 08/27/08 10:51am.


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