10-position plug, 3.81 mm pitch, rising cage clamp
The 1-1986375-0 is a 10-circuit plug from TE's terminal block connector family, accepting 14-30 AWG (0.05-2 mm²) wire into a rising cage clamp — the screw pushes a clamp plate down on the conductor, not the screw tip, so the wire stays under even pressure and won't cold-flow out of the termination.
Field-repairable with a screwdriver
Free-hanging with a 270° wire entry, the plug lets the cable dress flat against the panel or rail — the M2 screw is the only tool needed to re-terminate a pulled wire on site. Side-stacking feature means multiple plugs gang together without a separate interlocking piece — useful when a multi-circuit run needs to break into individual serviceable sections.