1797820000

Voltage - UL:	300V
Insulation Height:	0.472" (12.00mm)
Contact Tail Length:	0.059" (1.50mm)
Housing Material:	Liquid Crystal Polymer (LCP), Glass Filled
Contact Material:	Copper Alloy
Wire Strip Length:	--
Torque - Screw:	--
Screw Size:	--
Ingress Protection:	--
Material Flammability Rating:	UL94 V-0
Features:	Pick and Place Cap
Contact Mating Finish:	Tin
Operating Temperature:	-50°C ~ 100°C
Color:	Black
Wire Gauge or Range - mm²:	--
Wire Gauge or Range - AWG:	--
Series:	Omnimate SL
Current - UL:	18.5A
Voltage - IEC:	400V
Current - IEC:	27.5A
Mounting Type:	Through Hole
Termination Style:	Solder
Plug Wire Entry:	--
Header Orientation:	Vertical
Pitch:	0.197" (5.00mm)
Number of Levels:	1
Positions Per Level:	4
Number of Positions:	4
Type:	Header, Male Pins, Shrouded (2 Side)
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Terminal blocks - headers, plugs and sockets - are essential components in a wide variety of fields, including electronic and electrical engineering, telecommunications, computerized systems, control systems. A terminal block is an interface between two electrical systems, comprising a base unit that can be mounted on a panel board or other surface, providing connections for termination, and a series of pins that extend from the base unit and provide for the electrical set up of the two systems. The purpose of these blocks is to provide electrical connections for a variety of circuits in a secure, reliable and easily accessible manner, while protecting the components within and providing an efficient means for electrical operator control and maintenance.

Types of Terminal Blocks

Terminal blocks are available in a wide range of sizes, shapes and configurations, from single-pole blocks for basic interconnection of single lines, to high power multi-pole blocks for high-voltage and large-current applications.Common types of terminal blocks include single- and double-ended units, panel-mounted and/or surface-mounted blocks, blocks with spring or screw/nut terminations, dead front blocks (which may be insulated or non-insulated), terminal blocks with non-threaded tightening, bridging blocks, and \'tee\' blocks with two input and one output port.In many cases, these blocks will also have features such as LED indicators, \'breading\' or \'daisy-chain\' terminals, which enable circuits to be easily connected into multiple-level systems, and break-away terminals, allowing separated circuits to be easily connected into multiple-level systems and connected as required.

Applications Fields

The widespread availability of terminal blocks - headers, plugs and sockets makes them suitable for a variety of application fields, including the following:

• Electrical/electronic engineering
• Electromechanical design and wiring
• Automotive, aviation and marine applications
• Telecommunications
• Industrial machinery
• Industrial-level control, automation and process control
• Computer and data networking
• Audio/visual equipment

Terminal blocks are also used in experimental and laboratory testing, as they make connecting and disconnecting circuits from testing equipment quick and easy.

Working Principle

The basic working principle of the terminal block is relatively simple. The block has a base unit on one side with a series of pins extending from it, and a matching plate on the other side with multiple, corresponding shaped pins. When the two parts of a terminal block are connected, the contact points on the pins on both sides of the block make contact with one another, thus providing a path for the electrical current. When fitted with a spring or screw termination, the terminal block becomes a fastening-lock type, in which the current supply can be secured with a screw or other device, providing a stronger and more reliable connection.

Conclusion

Terminal blocks - headers, plugs and sockets - are a versatile and reliable type of electrical connector. They are commonly used in a wide range of applications, from simple circuits to more complex, high power multi-pole systems. The basic working principle of a terminal block is relatively simple, providing an efficient and secure connection between two electrical systems.

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