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Terminal blocks, also known as terminal strips, have been designed to make electric connections between electrical equipment, enabling users to connect and disconnect devices with minimal effort. They provide a secure connection which helps to improve safety, reliability and efficiency of electrical systems. In this article, we will be discussing the application field and working principle for terminal blocks of the wire-to-board type.

Applications and Advantages

Terminal blocks have been used to make a wide variety of electrical connections in industrial environments, but one of the most popular applications of terminal blocks is in the air, when the installation of wire-to-board type is needed. They are often used as a secure connection platform for powering motors, fans, sensors, relays, switches, and more.

Wire-to-board terminal blocks have the advantage over other types of terminal blocks due to their quick connection and easy disconnection. This allows for improved maintenance of electrical installations and helps avoid downtime from scheduled maintenance. They also enable users to easily add and rearrange components without having to disconnect other components, resulting in improved system flexibility. Additionally, due to their design, they are suitable for use when large current and voltage carry are needed.

Terminal blocks provide reliable connections in loud and dirty industrial environments, and are suitable for use in high voltage applications as well. They are often found in the control wiring cabinets of electrical equipment, such as Pump Control Boxes, Process Control Boxes, Soft Starters, and Variable Speed Drives.

Working Principle

Wire-to-board terminal blocks are designed in such a way that they allow for the easy connection and disconnection of bare conductors of a wire. The basic working principle for these types of terminal blocks involves the connection of two wires with a terminal block. A wire is inserted into the terminal block and then a second wire is also inserted into the same terminal block. The terminal block will either use rivets or screws to secure the wires in place.

A rivet or screw is used to secure the connection and then the excess wiring can be trimmed off. Terminal blocks also have an insulation guard built-in to cover the connection and protect it from external electric shock. This helps to increase the safety and durability of the connection.

Terminal Blocks Construction

Wire-to-board terminal blocks range in size from small, two-pole blocks to large blocks with dozens of connections. They typically feature a one-piece metal or plastic body with an insulation guard that fits over the connection point. The body of the terminal block is designed to fit securely into a mounting panel with a range of insulation types and mounting styles. This allows for a cost effective, easy and secure connection.

Terminal blocks also feature some type of locking mechanism, either by a clamp or the screw and rivet system. This allows for a secure connection and helps to reduce the risk of accidental disconnection.

Conclusion

Terminal blocks of the wire-to-board type offer a secure, simple and reliable way to make electrical connections. They are cost effective and can be used in a wide variety of applications, from industrial equipment to household appliances. They are able to handle high currents and are designed to ensure safe connections, further adding to their appeal.

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