39170-2009

Terminal blocks, also known as interface modules, are the most versatile interface and connection products in electrical engineering. In order to satisfy various needs and requirements, these blocks come in various shapes, sizes, and materials. All of them serve a common purpose: connecting two parts together in order to send or receive signals. 39170-2009 is the international standard that defines these blocks.

Terminal blocks are often composed of two main parts: connectors and terminals. Connectors are used to securely connect cables or wires to the terminals. Terminals are the essential parts of a terminal block that provide the means to connect two different components or wires electrically. They are also used to ensure electrical contact between them. There are many types of terminals available, such as screw terminals, spring terminals, and IDC connectors.

One of the main applications of terminal blocks is in industrial automation. They are used to connect various components in a process control system. From simple on/off switches to complex sensors and signal processors, terminal blocks are essential for controlling and monitoring systems.

Another application of terminal blocks is in electrical design and testing. Terminal blocks can be used to help ensure electrical safety by isolating signals from each other or isolating a signal from its common ground. They can also be used to quickly connect or disconnect a component for testing or troubleshooting.

The working principle of terminal blocks is relatively simple. A terminal block typically consists of two blocks connected together by either a screw or a pin. The block connected to the wires or components contains a small metal terminal, which is pushed into a hole in the block attached to the wires or components. This connection allows electrical current to pass from one point to the other. The connection is held securely in place by tightening the screw or the pin.

Terminal blocks are a versatile and widely used product in many industrial and electrical applications. With their easy and quick installation, reliable and secure connections, and their ability to be used in many different scenarios, terminal blocks are an essential part of any electrical system.