Panel wiring terminal selection
The 387700202: Rated 15 A at 300 V, this block handles typical lighting, motor control, and power supply tap circuits inside an industrial enclosure. The flange-mount chassis/panel footprint means it bolts to a flat surface rather than a DIN rail — a deliberate choice for panels where screw-down stability matters more than rail flexibility. Termination is screw-top with a closed bottom — all four wire entries (two per circuit) feed from above. The nickel-plated brass screws clamp the conductor; there's no through-hole or feed-through path below. That keeps the back of the block clean against the panel and simplifies wire routing in a shallow enclosure.
Four wire entries for two circuits means each pole can accept two conductors — useful for daisy-chaining power to the next block or landing a feed and a load on the same terminal. The closed bottom forces all wiring to enter from the top, so the block sits flush against the panel with no rear access needed.