The FCA-125-BY4 is an insulated connector from TE Connectivity. It is a 4-position circular connector with a bayonet locking system, commonly used in Ethernet, USB and analog audio applications. This connector has an internal mounting style, allowing for easy integration with equipment. It also has an IP68 rating, providing excellent protection from dust, moisture, and other environmental factors. The FCA-125-BY4 is suitable for most general-purpose applications and has a voltage rating of up to 300V AC/DC.