What this block is
The Molex 393570012 is the 12-position member of the Eurostyle 39357 series — a single-level through-hole terminal block with a 3.50 mm pitch and horizontal board-mount orientation. Screw-rising cage clamp termination accepts 16–28 AWG solid or stranded wire without a ferrule; the clamp lifts to open the saddle, wire drops in, screw tightens to close the cage under the conductor. Rated 12 A per circuit at 300 V with tin-plated copper alloy contacts and nickel-plated copper alloy hardware throughout. Black PA (nylon) housing operates from -40°C to 105°C.
What the ratings mean for your fit
Where Eurostyle 39357 sits in the panel wiring landscape
Eurostyle 39357 blocks are the standard DIN-rail-adjacent and direct-PCB panel terminal in industrial automation cabinets — they wire field devices (sensors, contactors, indicator lights) to the control board through a through-hole solder joint that replaces a flying-lead junction. The single-level construction keeps the profile low; the horizontal orientation routes wires perpendicular to the board edge so multiple blocks stack cleanly along a populated rail without wire crossover. The black PA housing differentiates the signal-level block from the clear or white housings used on power distribution blocks in the same series family.