129 Series 3 Pin 300V 20A Green Connector for PCB Screw Terminals (3 Pieces)

A terminal block connector is a component made of a plastic housing with metal holdings for connecting the wire to the Circuit. A terminal block consists of modular housing with an insulated body that secures two or more wires together. They are ideal for designs requiring secure, well-organized, and semi-permanent wire connections that can be easily swapped out for inspection or repair in the field.
There various types of terminal blocks that can be used in a design. These are some of the most common:

1.Pcb mount is known as a wire-to-board terminal block. it works by inserting a bare wire into the module where a clamp secures the wire and then the module is solder to PCB in common footprint,
2.Barrier strip has a screw-down terminal where spade is attached to a wire and then inserted onto the screw and tightened into housing,
3.Feed-through terminal block also known as wire to wire connector. it has one input and one output contact where 2 distinct wires are fed into the opposite side of the housing.

3 Pin 129 Series Green Connector for PCB Screw Terminals