Terminal blocks are connectors that terminate a single wire and connect it to a circuit or other system. Terminal blocks come in a range of shapes, sizes, and ratings, but always terminate a single wire (single pole) and are never multi-pole. Factories use terminal blocks to secure and/or terminate wires. In their most basic form, terminal blocks consist of several individual terminals which are arranged in a long strip. The terminal block is most useful for connecting wiring to ground.
As an integrated-type in which PCB is not exposed to the outside, it has an electrically safe structure such as dust, moisture, etc. and flame retardant material is used for external case Terminal blocks offer a cost-effective and time-saving solution for connecting wires. Not only do they make connecting wires in the field a simple and straightforward process, but they also provide an added layer of safety by grounding, isolating and protecting components in an electrical circuit.
The biggest difference between a terminal block and a bus bar is that a terminal block has separated circuits where each incoming wire is paired with an outgoing wire whereas a bus bar gathers multiple wires together for electrical distribution.
