TeSys K suppressor module, for contactors LC.K, LP.K, CA.K. To be used with 50-129V AC or DC control circuits, it provides a varistor protection limiting the transient voltage to 2 Uc max. Clip-on mounting on front of contactor (no tools required), it incorporates a power-on LED indicator. Sold in lots of 5 units. Green Premium compliant (RoHS/REACh).