0387204709

Series:	Beau™ 38720
Packaging:	Bulk
Part Status:	Active
Terminal Block Type:	Barrier Block
Number of Circuits:	9
Number of Wire Entries:	9
Pitch:	0.375" (9.53mm)
Number of Rows:	1
Current Rating:	15A
Voltage Rating:	300V
Wire Gauge:	14-22 AWG
Top Termination:	Screws
Bottom Termination:	PC Pin, Insulated
Barrier Type:	2 Wall (Dual)
Features:	Flange
Color:	Black
Terminal Screw Material:	Steel
Terminal Screw Finish:	Zinc, Chromate
Mounting Type:	Chassis, Panel
Operating Temperature:	-40°C ~ 100°C
Material - Insulation:	Thermoplastic
Material Flammability Rating:	UL94 V-0

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Terminal Blocks - Barrier BlocksTerminal blocks, or electrical barrier blocks, are printed circuit board (PCB) components used for electrical connections. They are constructed from a variety of materials, including plastic, polyamide, brass, and aluminum. The complexity and size of the terminal blocks can vary from the smallest commonly used in residential areas and commercial settings, to the largest used in industrial applications.Terminal blocks are first and foremost used to provide mechanical support of wiring, but their broader applications include the ability to protect circuits from abnormal voltages, reduce connections in the system, provide insulated connections, and create wire trace linkages, as well as offer a wide range of electrical and mechanical functions.Anatomy of Terminal BlocksTerminal blocks consist of several basic parts. The body of the terminal block is the foundation on which all the other parts attach and it is usually made of plastic or other non-metallic material. The contact terminal is the part of the terminal block that carries the current from the cable to the PCB or other electrical component. The contact is typically a small metal fork or a plate that has spring-action arms to ensure the contact remains securely connected to the cable or wire.The insulation displacement connector (IDC) is what allows connections to be made without need for soldering. Connecting the terminals securely requires an insulating displacer that cuts into the insulation of the wires being connected, then clamps onto the conductor inside. The strain relief is a feature that allows for the stress caused by strain in the cable to be evenly spread out along the length of the individual sections. In addition, strain relief helps to protect the conductor from damage caused by bending.Terminal Blocks Working PrincipleTerminal blocks are generally used in combination with barriers, although some have built-in barriers that are initiated into the printed circuit board (PCB) construction. They either comprise of a single block or a dual block for high-power applications. In general, barriers work by providing a safe electrical path for electrons to flow along and protect against overvoltage situations.When a connection is made, electrical current passes through the metal contact terminal into the printed circuit board. The current then proceeds through the appropriate circuits until it reaches its given destinations.When the overvoltage situation occurs, the integrated barriers shut off power to the entire system, ensuring the overcurrent doesn’t reach any dangerous voltages. When the overvoltage case dissipates, the barriers re-open, allowing current to flow once again. The action of the barriers in this case helps to protect the circuit from any possible damage. ConclusionTerminal blocks are versatile and indispensable electrical components that provide essential resistance against overcurrent situations. The working principle employed by terminal blocks is simple, yet effective in preventing overvoltage issues on the system. With their efficient design, terminal blocks provide much needed protection against electrical failure and fire hazard.

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