7-Circuit Barrier Strip for Panel-Mount Power Distribution
The TE Connectivity 1546306-7 is a 7-circuit barrier strip from the Buchanan series, designed for chassis or panel-mount power distribution. The 0.374" (9.50mm) pitch gives enough terminal spacing to handle the 20A per circuit rating without crowding adjacent wires, and the dual-wall (2 Wall) barrier physically isolates each terminal from its neighbour — a detail that matters when you are running 12 AWG at full current and don't want a stray strand bridging to the next circuit. The closed bottom termination means the screw terminals are the only wire entry point; the strip terminates the wires on the top side and the circuit runs internally to the next barrier, which is the standard arrangement for a feed-through or junction-point barrier block in an industrial panel.
For a control cabinet distribution block running 12 AWG, that covers most motor starter and solenoid circuits without derating. The 300V voltage rating is typical for industrial control panels inside an enclosure — it is not a high-voltage bus rating, but it covers 277V lighting circuits and 240V equipment feeds. The 12-22 AWG wire range accepts the common power wire (12 AWG) down to signal-level 22 AWG, so the same strip can mix a 20A feed and a smaller control wire on adjacent positions.
Flange Mount and Dual-Wall Barrier
The flange feature means the strip has mounting ears with screw holes for panel or chassis mounting — not a DIN-rail foot, but a direct screw-down to a flat surface. The dual-wall barrier adds a second wall between each terminal pair, which increases creepage distance and reduces the chance of a wire strand or tool bridging two circuits during termination. The terminal screws are steel with a nickel finish; the screw material is steel for strength in repeated tightening, and the nickel finish resists corrosion in a cabinet environment.