{"product_id":"siemens-3sk1121-1cb42-safety-relay-basic-unit","title":"Siemens 3SK1121-1CB42 Safety Relay Basic Unit","description":"\u003cdiv\u003e\u003cp\u003eSiemens' SIRIUS 3SK1121-1CB42 Safety Relay Basic Unit is a member of the Advanced series designed for autonomous safety circuits. It delivers four safety-relay outputs: two normally open (NO) instantaneous channels and two NO delayed channels, with a selectable time delay range of 0.5 to 30 seconds to suit different safety function timing. The unit operates from a 24 V DC supply (Us = 24 V DC) and uses screw-terminal connections, with a form factor intended for DIN-rail mounting in control panels. As a Basic Unit within the SIRIUS 3SK1 family, it provides straightforward wiring and reliable safety signaling without external logic modules.\u003c\/p\u003e\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"New","offer_id":46268157788394,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-017.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/siemens-3sk1121-1cb42-safety-relay-basic-unit","provider":"GTG Hardware","version":"1.0","type":"link"}