Two types of connection technology are available for the safety relays PNOZsigma, PNOZ X and PNOZelog. The safety relays have plug-in connection terminals, with either push-in spring-loaded terminals or screw terminals. The push-in spring-loaded terminal type is identified by the "C" in the unit description, e.g. PNOZ s1 C.
Safety relays PNOZ X