1913057

Voltage - UL:	300V
Insulation Height:	1.024" (26.01mm)
Contact Tail Length:	--
Housing Material:	Polyamide (PA), Nylon
Contact Material:	--
Wire Strip Length:	7mm
Torque - Screw:	0.5-0.6 Nm (4.4-5.3 Lb-In)
Screw Size:	M3
Ingress Protection:	--
Material Flammability Rating:	UL94 V-0
Features:	Mating Flange, Retention Latches (Non-Wire Side)
Contact Mating Finish:	Tin
Operating Temperature:	--
Color:	Green
Wire Gauge or Range - mm²:	0.2-2.5mm²
Wire Gauge or Range - AWG:	12-30 AWG
Series:	COMBICON MVSTBW
Current - UL:	16A
Voltage - IEC:	630V
Current - IEC:	16A
Mounting Type:	Free Hanging (In-Line)
Termination Style:	Screw - Clamping Yoke (Tension Sleeve)
Plug Wire Entry:	270°
Header Orientation:	--
Pitch:	0.197" (5.00mm)
Number of Levels:	1
Positions Per Level:	12
Number of Positions:	12
Type:	Plug, Female Sockets
Part Status:	Active
Packaging:	Bulk

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Terminal Blocks – Headers, Plugs and Sockets

Terminal blocks are a popular type of interconnect hardware among a wide variety of industries. They furnish a reliable means of connecting two or more components together in an organized fashion. Headers, plugs and sockets are typically the 3 most utilized components in terminal block assemblies. By understanding their individual purpose and how they integrate it is possible to better appreciate the breadth of uses terminal blocks have seen.

Headers

Headers in the context of terminal block assemblies are primarily used as a termination point for electrical circuits and serve as the starting or ending point for a particular circuit/wire. The most common type of header is a two-piece construction that threads into each side of a base, track or bridging block and provides electrical continuity from one side to the other. This type of header is typically rated for AC or DC voltage or current. The other type of header is the columnar, or “pierced” type. This type of header is most commonly used when there is a need to reduce potential shorts or voltage differences between two circuits. This type of header features pins that are embedded near the center of the assembly and serve as the termination point for each circuit.

Plugs and Sockets

Plugs and sockets form the connection points between two terminal blocks and are mainly used to bridge the gap between one wire and the next. Plugs feature a receptacle for a wire to be connected to while sockets take the place of a bridging block and can be used to connect two separate terminals without actually entering a bridging block. The connection points featured in plugs and sockets typically range from either pin or screw to socket connections in order to accommodate a variety of sizes and gauges of wire. The main distinguishing feature of plugs and sockets is that they always require a header to anchor the assembly onto the base.

Applications

Terminal blocks are mainly used in enclosed or hazardous environments such as telecommunications, industrial controls and automation systems, aerospace, automotive, and medical applications. Due to the complexity of the application, it is important to note that in order for a proper connection, the correct type of header must be chosen for the connection and a corresponding plug and socket corresponding to the header’s specifications. Terminal blocks are used for high current and high voltage applications due to their robust nature as well as their elevated temperature capabilities and excellent corrosion resistance, which make them ideal for the maritime and petrochemical industries. They come in a variety of configurations, wire gauges and materials, making them extremely versatile and capable of terminating a variety of wires from simple hook up and military-grade wires.

Working Principle

The working principle of terminal blocks is quite simple. When a connection is made, the same type of terminals are mated to each other. The terminals are usually either screw type or pin-type with a corresponding plug and socket receptacle.When two wires are mated, a current flows from the wire connected to the header to the plug through the socket and back to the terminal connected to the header. This establishes an electrical connection between the two wires that allows power to flow from one to the other. Terminal blocks are widely used due to their quick installation, unipolar and bipolar connection capability, durability and low cost. This makes them ideal when a cost effective, reliable connection is needed or when a large amount of electrical connections are needed quickly. In conclusion, terminal blocks, plugs, headers, and sockets are an important part of a variety of electrical systems. Understanding their purpose and how they integrate together helps one appreciate the number of different and complex applications that terminal block assemblies can be used for. Their ease of use, versatility, and resilience make them attractive in a wide range of applications. As technology progresses, it is likely that terminal blocks will continue to be one of the most trusted and reliable ways of connecting components together.

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