0808820:0021

Series:	CLIPLINE
Packaging:	Strip
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Label, Snap In
Legend:	Numbers, 21 through 30
Pitch:	--
For Use With/Related Products:	4.2mm Wide Terminal Blocks
Color:	White

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Terminal blocks have been used in industrial, commercial and residential applications since the 1920s and are still an integral part of electrical installations today. The blocks are a quick and reliable way to connect wires, network cables, and other conductive elements in a neat, organized fashion. Marker strips are an important accessory for terminal blocks as they help identify and mark connections in the block system.0808820:0021 application field and working principle concern marker strips and the variety of connections they can help facilitate. Marker strips are composed of a base and an identifying readable element. Commonly they are made of nylon or plastic, with either an engraved label or transparent section for inserting a paper label. The strips can be attached to the side, top or bottom of a terminal block, bridge, fuse block, or any other similar electric component.Marker strips serve a variety of purposes. First, they indicate which system components each wire is connected to. This helps electricians and technicians identify the exact source and endpoint of each run, so that they can diagnose faults and make workable configurations quickly. Second, the labels and numbers printed on marker strips provide the quickest way of tracking and tracing systems and circuits, since they can be used as reference points when making changes. Furthermore, strips can be used to indicate the rating of a particular system component, providing an added level of safety. For instance, if a specific wire is connected to a terminal block with a marking saying "10A", then an engineer or electrician knows that the current being delivered cannot exceed 10 Amperes.In addition to their practical uses, marker strips also provide aesthetic benefits. Since they can be color-coded to match the components they are connected to, they help to liberate the look of an electrical system, making it easier to understand and navigate. Their small size also minimizes the impact they have on the overall design.In order to discuss the application field and working principle of marker strips, it is necessary to define some terms. The most basic type of marker strip consists of an engraved label, which is typically composed of a metal shim covered by an organic material such as a thin polymer film. The labels are bonded to a base material, often a polyphenylene oxide, and the combination is heat shrunk, creating a uniform, tight fit.The working principle of a marker strip consists of two main components, the printing and the substrate (base material). The printing is done using either a laser printer or inkjet printer. The laser printer method is the most common, as it offers high accuracy and repeatability. The substrate is usually plastic or nylon, although metal or other materials can also be used.The application field for marker strips is extensive. In industrial settings, they are used to identify electrical components such as transformers, fuses, and power capacitors, as well as large networks of communication lines. They can also be used to keep track of serial numbers and information related to process control panels, power distribution boards, and monitoring systems. In residential settings, marker strips are commonly used to label electrical outlets, light switches, and wall sockets.Marker strips are an inexpensive and effective way to organize and label a wide variety of electrical components. The strips are simple to use and can be easily attached to any type of electrical component. Furthermore, the labels are quick to identify, allowing engineers and technicians to trace and troubleshoot systems quickly and accurately. As such, they remain an integral part of any electrician’s toolbox.

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