The press brake’s ram descends, aligning the punch with the die block—at that instant, the yellow-green terminal block mounted on the back of the ram housing bridges the safety circuit to the die’s temperature sensor. If the tooling overheats from repeated strokes, the signal passes through this single-pole connector, cutting power to the hydraulic pump before the next bend begins. Sheet metal die makers install these blocks in every die set, stamping line, and progressive tool because they need a compact, vibration-proof link that can be swapped in seconds when a die is pulled for sharpening. The same terminal appears inside the control cabinet of the coil feeder, where it connects the encoder feedback line to the PLC, ensuring the strip advances exactly one pitch per hit. In adjacent automation cells, it carries the 24 VDC signal that tells the robot gripper the part is properly seated before the next operation.