The Green Connector PCB Mount 3-pin is a pluggable screw terminal block connector commonly used in electronic and electrical circuits for safe and removable wire connections. It has three terminals (pins), making it suitable for applications where three separate connections are needed, such as AC input (Live, Neutral, Earth), 3-wire sensors, motor driver outputs, or signal/power distribution. The connector is designed to be soldered directly onto a PCB, while the wires are fixed in place using small screws that clamp the wire ends securely. These connectors typically come in 3.5 mm, 5.0 mm, or 5.08 mm pitch sizes, which define the spacing between the pins. They are designed to carry voltages up to around 300 V and currents between 10–15 A, depending on size and manufacturer. The standard green color is widely recognized, though other colors are available. Their strong grip, reusability, and ease of assembly make them a popular choice in Arduino/ESP-based projects, SMPS power supplies, motor control circuits, industrial automation boards, and communication modules.