These blocks often look like a single level feed through terminals. An advantage of using multilevel blocks is that multiple connections can be made in the same block. Three level terminal blocks: Just like dual level blocks, these have an extra level at the top.This arrangement is generally used to save space. Dual level terminal blocks: These blocks have another level of connection terminal stacked on the first one.Single level terminal blocks are of the most simple type having one input contact and one output contact. These are also called as single feed terminal blocks. Single level pass-through terminal blocks: These are simply used to connect two wires together, i.e.Types of terminal blocks Electrical terminal blocks can be classified on the basis of structure, device type, termination options etc. Terminal blocks keep connections much more secure and wires well organized. That allows us to increase the number of terminals according to the requirements. Most terminal blocks are usually modular and mounted on DIN rail. The body has a mounting arrangement so that the block can be easily mounted on or unmounted from a PCB or a mounting rail. It also provides a base for clamping element. The insulating body of a terminal block houses a current carrying element (a metal strip or terminal bar). A typical simplest terminal block is as shown in the image below. It consists of a clamping component and a conducting strip. Here we use terminal blocks.Ī terminal block (also called as connection terminal or terminal connector) is a modular block with an insulated frame that secures two or more wires together. But what if there are a number wires that need to be joint/connected near each other? Or, what if multiple outgoing wires are to be connected to a single incoming wire? Then this method will neither be safe nor be convenient anymore. But, is it safe? We can apply insulation tape over the joint or use a wire connector. How do we connect two wires? By stripping the insulation at the ends and twisting them together? Yes, it works.
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