3000739

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Terminal Blocks - Accessories are used for electrical connections with equipment, such as electronics, communication and computing equipment. The most common applications of terminal blocks are to electrically connect and disconnect two or more electronic systems. Terminals provide a dependable medium for allowing the easy connection and disconnection of electrical devices as well as components in a circuit. Depending on the application, connecting pins may be designed with jumpers, different spacing between each pin, and terminals that are either straight or angled.

When designing with a terminal block, it is important to consider the total count of electrical connections that need to be made. Depending on the application, multiple cues such as physical environment, pin count, temperature ratings, terminal style, signal voltage, current rating, insulation type and other properties have to be considered before selecting a terminal block.

Terminal blocks have two parts, the bases and the pins. The bases, also known as the headers, have a number of pins or sockets that connect to the connecting cords. The pins are designed to insert into the sockets or directly into the header, depending on the type of terminal block. The header contains small electronic components such as capacitors, resistors, and transistors.

To ensure the terminal block performs reliably and efficiently in its intended application, there are several different categories and types of terminal blocks available. The three most popular categories of terminal blocks are DIN (Direct In-Line) Terminal Blocks, Barrier Terminal Blocks, and Printed Circuit Board (PCB) Terminal Blocks.

DIN Terminal Blocks generally have a rectangular shape and are designed to accept standard .125 inch pitch (3.2 mm) plugs and connectors. The pins are square and fit into the sockets (terminals) of the base. A screw clamp or "push-in" connection is used to securely attach the plug or connector to the terminal.

​Barrier Terminal Blocks feature a built-in insulator barrier between the plug and the base. These are typically cost effective because they require fewer components for installation. The insulation barrier keeps dust and moisture away from the pins and sockets.

PCB Terminal Blocks are primarily used for direct Solder Connections and are designed to mount directly to a Printed Circuit Board (PCB). They are Class F rated and are suitable for high temperature applications. The PCB Terminal Blocks are rated up to 105°C and up to 6 mm² clearance. The pins are designed a specific size to prevent plugs from being inadvertently inserted into the wrong terminal.

Terminal Block Accessories such as Pluggable Terminals, Terminal Covers, End Caps and Terminal Covers add a higher level of protection to terminal blocks, protecting them against vibration, shock, dust and dirt. Pluggable Terminals fit over the body of a DIN Terminal Block, providing sound mechanical and electrical connections while allowing for easy replacement of components. Terminal Covers and End Caps protect the entire terminal block from potential environmental damage. Terminal Covers are designed to fit over the base of a terminal block, while End Caps fit over the ends of the pins.

3000739 Terminal Blocks are used for a wide range of applications, including commercial, industrial, and home-based systems. The terminal block\'s main purpose is to provide an efficient and reliable connection between an electronic system and the associated components. The different types of terminal blocks available, are dependent on the application and the number of electrical connections that need to be made. Terminal Block Accessories provide additional protection against environmental damage and vibration while extending the life of the terminal blocks.

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