TeSys K auxiliary relay for usage categories AC-15 up to 690V and DC-13 up to 600V. It features 4 contacts (3 normally open + 1 normally closed), a 48V 50/60Hz AC coil, and connection via screw terminals. It is designed for demanding applications with high operating speeds of up to 10,000 cycles per hour, offering high reliability and durability. Certified to multiple standards (IEC, UL, CSA, CCC, EAC, Marine) and compliant with Green Premium (RoHS/REACH).