It provides two normally-open instantaneous contacts for feedback or interlock circuits. The contacts are rated for 50/60 Hz operation, with a rated insulation voltage of 230 V at 50 Hz and 230 V at 60 Hz.
The front face carries IP20 protection; the wiring terminals accept 0.25 to 2.5 mm² solid or stranded conductors. Shock resistance is 10g for 5 ms and 5g for 10 ms, so it'll survive the ride on a lube route or a conveyor line.
The 2 NO contacts are instantaneous (no make-before-break or delayed switching), so they close and open at the same time as the main contactor's armature.
