The Schneider Electric TeSys D suppressor module, for LC1D09-D38 (3P) contactors. Clipping onto the right-hand side of contactor (no tools required), polarised component. Sold in lots of 10 units. Green Premium compliant (RoHS/REACh). To be used with 110-240V AC control circuit voltage, it provides RC protection limiting the transient voltage to 3 Uc max