What this SIRIUS breaker does on the line
Snaps onto 35 mm DIN rail per DIN EN 50022, or screws direct to a backplate — 45 mm wide, 97 mm tall, 96 mm deep, so it takes one standard 45 mm slot in a motor control center. Screw terminals on both main and auxiliary circuits accept 1 to 2.5 mm² solid or stranded (two wires per clamp), or 2.5 to 6 mm² for heavier feeds — no special crimp tool needed. IP20 on the front face keeps fingers out; the rest of the breaker is inside the enclosure, so no washdown rating — this lives in a dry cabinet.