2854720

Voltage - UL:	300V
Insulation Height:	0.709" (18.00mm)
Contact Tail Length:	--
Housing Material:	Polybutylene Terephthalate (PBT)
Contact Material:	--
Wire Strip Length:	--
Torque - Screw:	--
Screw Size:	--
Ingress Protection:	--
Material Flammability Rating:	UL94 V-0
Features:	--
Contact Mating Finish:	--
Operating Temperature:	--
Color:	Blue
Wire Gauge or Range - mm²:	--
Wire Gauge or Range - AWG:	--
Series:	COMBICON MSTBO
Current - UL:	16A
Voltage - IEC:	400V
Current - IEC:	12A
Mounting Type:	Through Hole
Termination Style:	Solder
Plug Wire Entry:	--
Header Orientation:	90°, Right Angle
Pitch:	0.197" (5.00mm)
Number of Levels:	1
Positions Per Level:	3
Number of Positions:	3
Type:	Header, Male Pins, Shrouded (2 Side)
Part Status:	Active
Packaging:	Bulk

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Terminal Blocks - Headers, Plugs and Sockets

Terminal blocks have been widely applied in the electronics sector for their reliability, simple assembly, and versatility in connecting different circuits. Also known as “terminal strips”, terminal blocks range from small 2-pin units to high capacity 4-pin assemblies. Within each terminal block are given parts that can be brought together to form connections, which are known as ‘headers’, ‘plugs’, and ‘sockets’.

Headers

A header is the male plug of a terminal block, used to connect two pieces of equipment. It consists of protruding contacts that can be inserted into corresponding female connectors or sockets. Headers are often found in a variety of shapes, such as pins, poles, and screws, depending on the application. Pin headers provide low-resistance joints between two circuits, while screw headers are preferred for more secure connections.

Plugs

A plug, also referred to as a female connector, is the receiving end of a terminal connection. It is typically used to connect the terminal block to another device such as a power source or wiring harness. Plugs are typically available in various pin configurations and sizes, and feature an insulated side and an uninsulated side. The uninsulated side is the point of contact for the header, while the insulated side covers the connection to protect it from environmental factors.

Sockets

A terminal socket is the female point of a connection within a terminal block. It receives the connection from a header or another plug. Sockets are typically designed with insulated walls and slots, which allow them to receive electrical connections and provide obstruction from environmental elements. Sockets come in a variety of sizes, shapes and colors which are tailored to a variety of different applications.

Benefits

Terminal blocks provide a simple and effective method of connecting equipment in electronics. They are particularly useful for connecting higher voltage or higher current circuits, as they are designed to be more reliable and prevent short circuiting. Additionally, terminal blocks are often preferred to mechanical connectors as they provide a secure and safe connection. They are also widely used in prototyping, since they provide an easy way of connecting and testing components for electrical circuits. Terminals also help reduce the risk of electric shock, since the exposed contacts can be safely covered or enclosed by insulation and the plugs are specifically designed to not be exposed to the user.

Applications

Terminal blocks are widely applied in electronic circuitry and automation control, as they are easy to use and provide reliable connections. They can even be found in household equipment such as kitchen appliances, as they provide excellent electrical insulation and connectivity.Terminal blocks are also used in industrial operations, such as robotics, manufacturing, automotive, and aerospace systems. By using terminal blocks, engineers can ensure the safety of complex machinery while still allowing flexibility in device connectivity. Additionally, they are also applicable in switchgear, providing control over electrical circuits and providing protection against overloads and short circuits.

Working Principle

Terminal blocks are designed to hold several electrical wires and then connect them to another point. Standard terminal blocks consist of a plastic housing with one conductor bar inserted in the middle, two insulating parts affixed to each side, and a terminal opening through which a connecting wire can enter. Outwardly, they look like two strips of metal, one with a terminalpertaining to incoming wiring, and another for outgoing wiring.The conductor bar, usually made of metal, provides electrical conductivity, while the insulating parts provide insulation from other system elements and prevent short-circuiting. When an electrical wire is inserted into the block through an opening, it passes through the conductor bar and is connected to the other strip. This provides an electrically conductive pathway between two points, creating a secure and reliable electrical connection.

Conclusion

Terminal blocks, featuring headers, plugs and sockets, are widely applied in the electronics industry for their simple assembly and reliable connectivity. They are used in a wide range of applications from industrial automation to household devices. In operation, the conductor bar provides a conductive pathway while the insulation parts protect the system from short-circuiting and overloading. Ultimately, the use of terminal blocks is highly beneficial for its reliability and versatility.

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