4-Position PCB Terminal Block — 3.81mm Pitch, Side Entry
The TE Connectivity Buchanan 1776113-4 is a 4-position, single-level PCB terminal block on a 0.150" (3.81mm) pitch. It uses a screw-actuated rising cage clamp to terminate solid or stranded wire from 16 to 28 AWG, with the wire entry oriented horizontally — parallel to the board surface — making it a side-entry block for low-profile layouts where vertical clearance above the PCB is limited. Rated 12 A at 150 V, the block carries enough margin for control-circuit and low-power distribution duty inside industrial panels, HVAC controllers, lighting ballasts, and building-automation equipment. Contact and clamp hardware are copper alloy with nickel plating; the contact surfaces are tin-plated, which suits the moderate mating-cycle count of a field-wired terminal block rather than a high-cycle connector.
The 1776113-4 shares its 3.81mm pitch, 12 A / 150 V rating, side-entry orientation, and rising cage clamp termination with the 3-position 1776113-3. Both are active and ROHS3 compliant, making the choice a straight circuit-count match to the BOM.