What this plug does in the panel
The 1546122-2 is a 2-position plug from TE's Buchanan series, designed for wire-to-board termination with a 0.200" (5.08mm) pitch. It mates with a matching 5.08mm-pitch header to create a field-serviceable connection that carries 15 A per circuit at 300 V. Retention latches on the wire side lock the plug into the header, preventing vibration-induced disconnection in industrial control cabinets or power distribution panels.
Termination and wiring details
Each position is terminated with an M3 screw tightened to 0.79 Nm (7.0 Lb-In) over a rising cage clamp that secures the stripped conductor. The recommended wire strip length is 6-7.5mm.
The closest functional second-source is the 1546118-2, which is also a 2-position plug with 15 A / 300 V rating but uses a 0.197" (5.00mm) pitch and a 270° wire entry. The 1546122-2's 5.08mm pitch and 90° entry make it a direct fit for standard 5.08mm headers, while the 1546118-2 suits 5.00mm spaced boards. The 284047-2 is identical in pitch, torque, and wire entry angle but comes in a green housing — the 1546122-2's gray color may be preferred for visual wire identification in multi-circuit panels.