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Barrier blocks, also known as terminal strip, terminal blocks, terminal strips or terminal connectors, are a type of electrical connection commonly used in industrial and commercial contexts. They are made of a combination of metal and plastic, providing durable and reliable connections for the transport of electrical signals and power from one location to another. The connection style of the barrier block is designed to be removable, providing a quick and simple way of disconnecting and re-connecting equipment for maintenance and repair.

Application field

Barrier blocks are used in almost any application that requires the connection of electronic or electrical devices. They can be used to connect transformers, relays, circuit breakers, motor drives, electronic valves, and many other components. In many applications, the barrier block is used in combination with other types of wire connections, such as plug-in connectors, cable ties and ring terminals.

Barrier blocks are also used in telecommunications and medical equipment, as well as in commercial and residential applications. In many of these applications, the barrier block is used to provide an insulated connection. For example, many medical equipment use barrier blocks to connect directly to the patient, providing electrical isolation and reducing the risk of electrical shock.

Working principle

Barrier blocks allow multiple wires to be connected in a single connection. Each connection is typically made up of two parts: a base and a terminal screw. The base is typically made of metal, such as stainless steel, and can be mounted to a wall or panel. The terminal screws are plastic and color coded for easy identification. To make a connection, the two screws are tightened down and the wire is inserted and secured.

The terminal screws are designed to provide a secure connection, as the screws are tightened down and the wire is secured underneath. This helps to avoid accidental disconnections, and also reduces the risk of electrical shocks, which can be dangerous in certain applications. Additionally, the terminals are usually covered with a protective cap, which further reduces the risk of shocks.

When the connection is made, it is said to be “closed”, providing a complete electrical connection for the current to flow through. The terminals are also designed to be “open”, allowing the user to easily disconnect the connection without damage to the terminal.