1546670-5

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Barrier Blocks are terminal blocks with a sliding insulation barrier or barriers, permitting separation of high voltage conductors from lower voltage, or different phases of the same voltage. A model which features two insulation barriers widening X-Y configuration is 1546670-5.

The application of 1546670-5 terminal blocks is in installations where a barrier between wires is needed. It is a common way of wiring low voltage applications where three or more wires have to be connected and the circuit needs to be separated in a safe way. Common use for such installations can be found in electronic or electric panels, for supplying electricity to motors, solenoids or transformers with different loads.

The working principle of barrier blocks consists of a plastic base and metallic contacts. The base has several screws, where the wires can be hold, and several pins passed through the base, sidewards. These pins are normally made of silver or gold plated brass. In general, the number of pins per block is two or four.Each pin serves a wire in the terminal block assembly.

The base of the barrier blocks can be divided into sub-bases for a more effective insulation between the pins. The sub-bases are connected by an insulation barrier that works as a slide over each pin. This sliding movement of the barrier allows independent wiring and configuration. It also helps reduce the wastage of pin contacts.

To use the barrier blocks, there is a need to insert the pin contacts into the sub-bases. Next, the barrier is closed over the sub-bases, holding all the pin contacts in place. The wires can then be strippied and screwd into the screws that are located on the barrier blocks. Due to the insulation barrier that isolates each pin, the same voltage level can be applied in each sub-base.

In conclusion, the 1546670-5 barrier block is used in various low voltage applications, where three or more wires are required and a separation barrier is necessary. The way these barrier blocks work is by having a plastic base, metallic contacts, screws and an insulation barrier that slides over the contacts. With this construction, a safe electrical circuit is created, allowing a same voltage level across each pin.

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