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Marker Strips

Marker strips are an essential component of terminal blocks. Their purpose is to provide an easy-to-read, organized and labeled boundary around the electrical circuit and make it easier for technicians and engineers to access and maintain wiring. Their identifying colors, numbers or letters provide an instant overview of the deeper logic of the circuit.

Application Field and Working Principle

Marker strips are typically used in a variety of commercial, industrial, and military applications. They are used to clearly mark and guide the technicians in the location of the electrical terminals and any other components of the system. The markers will take on different colors, numbers, or letters, which are to designate the specific components or connections. The markers help to quickly recognize the different parts of the circuit, while also serving to protect the delicate connections from accidental interference.

This type of marker strip is the most widely used, especially when it comes to industrial control systems. They are constructed from durable polycarbonate and comply with UL 94V-0 flame retardant requirements. This flame rating means that they are able to withstand the temperatures and exposure associated with the system’s environment. In addition, these marker strips are designed with safety in mind, featuring finger protection recesses to reduce risk of electrocution.

The marker strips also provide a simple mechanism for organizing complex wiring. The colored fields provide a natural delineation between the various components, while the number or letter identification offers a way to quickly recognize the specific elements of the terminal block.

Marker strips are also designed to be modular, allowing them to be easily connected or disconnected. This makes it a great solution for those who require frequent access to the wiring for service or maintenance. Simply remove the marker strip and swap in the new strip once the wiring’s been reconfigured for the desired task. This is especially useful for large, complex wiring systems or when the need to connect different pieces of the system arises.

Technical Specifications

Marker strips are available in a variety of configurations, with a broad selection of dimensions, colors, and letter/number combinations.

• Number of rows- 1 to 6 rows.
• Pitch- 3.50 mm, 5.00 mm and 10.00 mm.
• Body length-2.00 mm to 12.00 mm.
• Colors- Brown, Red, Yellow, Blue, Gray, White.
• Letters/Numbers- A to Z and 0 to 9.

Most manufacturers offer a life expectancy rating for their marker strips, most often time rating them between 5,000 and 30,000 insertions.This rating considerations factors such as the quality of the components, the strength of the contacts, and how suitable it is for the application.

Conclusion

Marker strips offer a low-cost, easy-to-use solution for technicians and engineers looking to quickly and precisely identify and organize wiring within a terminal block circuit. These marker strips are available in a variety of configurations and color/letter/number combinations, as well as a high life expectancy rating.

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