Six-Terminal Barrier Strip, 0.325" Pitch, 20A — the Buchanan #4 Workhorse
The TE Connectivity Buchanan 4PCR-06-006 is a 6-circuit barrier strip from the #4 series, built for panel and PCB-mount power distribution where a screw-terminated, field-serviceable connection is non-negotiable. The 0.325" (8.26mm) pitch gives you enough room between terminals to land 12 AWG wire without the conductors shorting across adjacent positions — a common headache on tighter-pitch blocks. Rated 20A per circuit at 150V, this strip handles motor branch circuits, heater loads, or a DC power bus without needing a bigger block. Wire acceptance runs from 12 AWG down to 22 AWG — the 12 AWG side is for the power feed, the 22 AWG side for control or sense wiring landing on the same strip. The three-wall barrier design (Tri) between terminals prevents a stray strand from bridging adjacent circuits, which is the kind of intermittent fault that sends a field tech hunting for hours.
The 20A rating per circuit is the continuous current at the rated operating temperature of 105°C. That's not a surge rating — it's the sustained load the strip can carry before the temperature rise exceeds the polyamide housing limit. In practice, if you're running the full 20A on all six circuits simultaneously, you'll want to derate based on ambient temperature inside the enclosure; the 105°C ceiling gives you headroom in a warm cabinet but not unlimited margin. The 150V voltage rating is the working voltage between adjacent circuits and to ground, limited by the creepage distance across the 0.325" pitch and the three-wall barrier.