A21940307

Top Termination:	Screws with Captive Plate
Material Flammability Rating:	UL94 V-0
Material - Insulation:	Thermoplastic
Operating Temperature:	-40°C ~ 105°C
Mounting Type:	Chassis, Panel
Terminal Screw Finish:	--
Terminal Screw Material:	Steel
Color:	Black
Features:	--
Barrier Type:	2 Wall (Dual)
Bottom Termination:	Quick Connect (0.250"), Insulated
Series:	A2000
Wire Gauge:	12-22 AWG
Voltage Rating:	300V
Current Rating:	30A
Number of Rows:	1
Pitch:	0.375" (9.53mm)
Number of Wire Entries:	3
Number of Circuits:	3
Terminal Block Type:	Barrier Block
Part Status:	Active
Packaging:	Bulk

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Terminal Blocks - Barrier BlocksA21940307 application field and working principleTerminal blocks, also referred to as barrier blocks, are high current, high voltage, and low voltage electrical devices that are used to create electrical connections between two or more cables, wires, and/or electrical components. These devices come in a range of styles and configurations to provide users with an effective and customizable solution for their specific application.Terminal blocks can be found in wide variety of applications ranging from everyday consumer electronic devices such as remote controls and televisions to industrial applications such as electrical motors, heating units, and industrial control panels. These devices are often used in power supplies, telecommunications networks, and alarm systems as well.Terminal blocks are typically configured so that the connections are broken into two groups. The first group is the power or live wires, which carries the electrical current from one component to another. The second group is the neutral wires, which are used to connect the circuit to the ground for safety.The working principle of terminal blocks is based on the principle of electrical conduction, where electric current flows through two or more conductors, allowing electrons to move, creating an electrical current. When multiple cables, wires, and components are connected through barrier blocks, the electric current is distributed through the components, allowing for the required operation of the components.Terminal blocks come in various shapes and sizes, depending on the application requirements. Some devices are designed as a single unit that provides one port for an input and two ports for the output. Other configurations may include up to seven ports, allowing for more connections.The most common types of terminal blocks are screw connection blocks, terminal posts, and euroblocks. Screw connection blocks use screws to connect or disconnect the wires, while terminal posts use screws and nuts to attach the connections. Euroblocks, on the other hand, provide a more efficient approach, with a plug and socket system allowing for easy connections and disconnections.In addition to providing the necessary electrical connections between components, terminal blocks also protect the components from electrical overloads, as well as heat loss. The thickness of the insulation material used to make the connections, and the contact surface area, which increases the surface area of the conductive paths, help protect the components from electrical overloads.Terminal blocks are an integral part of the electrical system of any electronic device. They are used in a variety of applications ranging from consumer electronics to industrial machines. The variety of shapes and sizes makes them a very convenient and versatile solution for any electric circuit.

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