Terminal Blocks - Wire to Board

Terminal blocks, a versatile and reliable form of electrical connectivity, serve a vital role in industrial and commercial applications. Terminal blocks are specialized connectors used to secure electrical wires and routes, provide electrical insulation, and safely conduct electrical current from a power source to a load device.

Application Field

Terminal blocks are the most common form of electrical connection used for both industrial and commercial applications. In industrial settings, they are used principally in electrical and electronic instrumentation and control applications for safely connecting control and signal wires. Terminal blocks are also used extensively in apportioning and routing low voltage power in extraordinary environments including hazardous locations, confined spaces, and corrosive conditions.

In commercial settings, terminal blocks are used for a wide range of applications including electric motors, machine controls, application automation, home and consumer electronics, appliances, lighting, and custom electrical applications. Terminal blocks have even become commonplace in hobby electronics as a robust and inexpensive way of completing a project that would otherwise require soldering wires and components together.

Working Principle

Terminal blocks provide safe, efficient electrical connection circuitry which is easily assembled and modified. The basic principle of a terminal block is simple; they pass electrical current through the space between two conductive materials with metal screws and fasteners securing the connection. Typically, the parts are factory assembled and patented leads are wired into the terminal blocks. To complete the connection, wires with insulated ferrules are tightened to the metal screws on the terminal block.

The ferrules provide electrical insulation that separate the power source from the load device. Terminal blocks also provide easy access and quick connection of multiple connections. This is achieved by slots, knobs, covings, and blades that securely align multiple individual conductive components within a single terminal block.

Terminal blocks also provide a wide range of features including the ability to prevent contact with open connections and configure circuits with polarity. Commonly used accessories such as jumpers, interconnects, covers, and inhibitors increase versatility and make them even more useful in applications.

Conclusion

Terminal blocks are a versatile and reliable form of electrical connection used for a wide range of applications in both industrial and commercial settings. Their simple principle allows safe, efficient electrical connection circuitry that is easily assembled and modified. An elaborate range of features and accessories increase their effectiveness in myriad applications, making terminal blocks a popular choice.