Power Ring Terminal, 12-16 AWG, Screw Termination
The TE Connectivity 521843-1 is a power ring terminal designed for screw termination on 12-16 AWG wire. It's the kind of field-serviceable connector you can re-pin on site with just a screwdriver — no crimp tool, no die change. The ring tongue gives a positive, vibration-resistant connection to a stud or bus bar, and the screw clamp holds the conductor without cold flow. This is the terminal you reach for when you need a reliable power connection in a panel or junction box and you want to be able to swap it out in minutes.
No official second-source cross-reference is on record, but the 175036-3 and 1986548-1 are box-packaged peers in the same series if your BOM calls for bulk rather than tape-and-reel.
Packaging Options
Available in Tape & Reel (TR) for automated assembly lines or Cut Tape (CT) for prototype and low-volume work.