Eurostyle Terminal Strip for Power Distribution — 2 Circuits at 40A
The TE Connectivity Buchanan TSB1000 1776302-2 is a 2-circuit Eurostyle terminal strip rated 40A at 250V, built for chassis or panel-mount power distribution. This is the 2-circuit member of the TSB1000 series — a dual-row strip with 4 wire entries (2 per circuit) that accepts 10-22 AWG wire. The top termination uses steel screws with a zinc, non-hexavalent chromate finish; the bottom is closed, meaning there are no PCB pins or bottom-side terminals. It is a pure wire-to-wire or wire-to-busbar interconnect, not a board-mount device.
The 40A per-circuit rating is the headline number here — that is bus-level current for a terminal strip this size. For sustained 40A loads, use 10 AWG and keep the ambient below the 100°C operating maximum. The 100°C rating on the PA66 insulation means the strip can live inside a warm industrial cabinet without derating, but the wire insulation must match. The 0.472" (12.00mm) pitch is wide enough that two 10 AWG conductors can land side-by-side without the insulation crowding the adjacent screw terminal. The enclosed barrier between circuits prevents a stray strand from bridging to the next terminal — a real risk with stranded 10 AWG if the strip is not properly dressed. The closed bottom means the strip mounts flat to the panel or chassis; there is no bottom-side access, so all wiring is done from the top.