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Terminal Blocks - Barrier Blocks

Barrier blocks, also known as terminal blocks, are mechanical devices designed to safely and dependably electrically connect two or more conductive points. They are also used to connect power cables in electrical appliances. A 0387198300 barrier block is typically made from materials such as plastic, zinc die-cast, and aluminum. The terminals are insulated to prevent accidental contact by a metal barrier between the terminals.

Barrier blocks are used in a variety of applications, from industrial control systems to consumer electronics. A typical application for a barrier block includes the interconnection of multiple electrical circuit boards in an electronic device. Many consumer electronic devices and appliances, such as television sets and washing machines, use barrier blocks for internal wiring and power connections.

Working Principle

Barrier blocks use the principle of two poles connected together by the application of pressure. The metallic terminals are housed in a plastic or metal housing and are insulated with non-conductive materials such as air, rubber, and plastic. When the pressure on the terminals is increased, the terminals come into contact and an electrical connection is established.

This connection is maintained until the pressure is reduced. When the pressure decreases, the connection is broken and no current is drawn. This ensures that no current is drawn when the power is turned off and enables the system to quickly restart when power is applied.

Barrier blocks are usually rated for both high and low level voltage operation. The rated voltage of the barrier blocks is typically printed on the device. Devices rated for low level voltages are usually designed to allow currents of up to 1A to be safely connected, while those rated for high level voltages can usually handle currents up to several thousand volts.

Barrier blocks are simple in construction and operation, but provide a reliable and dependable connection for many electrical systems. They are an efficient, cost-effective solution for many low to medium current applications in both industrial and consumer electronics.

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