Buchanan 282836-7 — 7-Position PCB Terminal Block, 5.00 mm Pitch
The TE Connectivity Buchanan 282836-7 is a 7-position, single-level PCB terminal block from the Buchanan series, terminated via a screw-actuated rising cage clamp. It is designed for wire-to-board power and signal connections where a field-serviceable, high-retention termination is required — typical for industrial control panels, HVAC equipment, and power distribution PCBs. Each position is rated 13.5 A at 300 V, with the rising cage clamp accepting wire from 16 AWG down to 30 AWG. The clamp and screw are brass with nickel plating; the contact surface is brass with tin plating, suited for the current density and environmental exposure of a typical indoor equipment enclosure. The M3 screw has a specified torque of 0.68 Nm (6 Lb-In) — exceeding this risks stripping the clamp or damaging the conductor. The interlocking side feature allows multiple blocks to be ganged side-by-side without losing position pitch, useful for building multi-level or wider terminal arrays on a single PCB.
Termination and Wire Preparation
The rising cage clamp termination lifts a clamping plate as the screw is tightened, trapping the stripped wire between the plate and the bus bar. This design provides a gas-tight connection that resists vibration loosening better than a simple screw-and-washer terminal. No ferrule is required for stranded wire, though a ferrule eases insertion for fine-strand conductors in the 16-30 AWG range. The 5.00 mm pitch leaves enough board space for routing traces between adjacent terminals at the rated current without excessive copper width.