IP20 rated, so it belongs inside a cabinet, not on the machine surface. Tunnel-type terminals accept 0.5 to 6 mm² wire; connection is by clip, which speeds up wiring compared to screw terminals.
The 10 A rating at 230 V AC (cos phi = 1) means this extension handles resistive loads up to that current — think lighting banks or heater contactor coils. The 1 C/O + 1 NO signal contact composition gives one changeover and one normally-open auxiliary contact for status feedback or interlocking.
