9-Circuit Barrier Block for Panel Wiring
The TE Connectivity Buchanan 4DB-P108-09 is a 9-circuit barrier strip terminal block with a 0.325" (8.26mm) pitch, rated 20A per circuit at 150V. It uses a dual-wall barrier design with screws and captive plates on top for wire termination, and PC pins on the bottom for through-hole board mounting. This is a standard panel-mount barrier block for control cabinets, power distribution, and industrial equipment where screw-clamp reliability is preferred over push-in or spring terminals.
Termination and Wire Fit
Top termination uses screws with captive plates, so the pressure plate stays with the screw and does not drop out during wiring. Wire range 12-22 AWG covers most panel and control circuit sizes. The single-row layout with 9 wire entries matches the 9 circuits — one wire per position.