BT-21

Terminal blocks, also known as barrier blocks, are devices used in electrical and electronic applications to provide an electrical connection between two or more wires. They are an indispensable part of any electrical system, providing efficient power distribution, noise reduction, and safety. BT-21 is a type of terminal block, developed by China-based company Baotong Technology.

The BT-21 is made of PPO/HIPS, an ultra-lightweight and fire-resistant plastic material. It is available in three sizes that support a wide range of wire diameter, ranging from 4mm to 16mm. The terminal is UL certified, providing reliable connection protection and current regulation. It is incredibly easy to install and is designed with a range of features to ensure high durability and flexibility.

There are three primary application fields for the BT-21 terminal blocks. The first is industrial control, where it is used to connect electrical components such as switches, relays, or circuit breakers. The second is test and measurement, where the terminal block is used to connect sensors, data acquisition systems, and voltage/current sources. The third application field is automation, where it can be used to connect motors, regulators, and other automation components.

The working principle of the BT-21 is relatively simple and straightforward. The terminal block consists of two parts: a conductor and an insulator. The conductor is composed of a metal plate coated with a conductive oxide layer, which provides a semiconductor connection between two wires. When a voltage is applied, the oxide layer provides a conductive path for current flow. The insulator, on the other hand, is composed of a plastic insulating material that prevents accidental contact between current carrying wires and other components.

The BT-21 terminal block is an incredibly versatile and practical device that can be used in a variety of applications. It is highly durable and easy to install, providing reliable connection protection and current regulation. In addition, its fire-resistant material makes it ideal for use in hazardous environments.