{"product_id":"siemens-simatic-s5-6es5-490-7lb21-front-connector","title":"Siemens 6ES5490-7LB21 Simatic S5 46-Pin Front Connector","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Siemens 6ES5 490-7LB21 is a 46-pin front connector engineered for the Simatic S5-115U modular automation system. This interface component serves as the primary physical connection point between field-level instrumentation wiring and the PLC I\/O modules. By providing a standardized, secure termination point, it facilitates rapid installation, efficient maintenance, and reliable signal transmission in industrial control environments, including power plant instrumentation and automated manufacturing.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e46-pin high-density configuration for S5-115U I\/O modules.\u003c\/li\u003e\n\u003cli\u003eRobust screw-terminal design ensures high vibration resistance and secure electrical contact.\u003c\/li\u003e\n\u003cli\u003eEnables module replacement without disconnecting individual field wires, reducing maintenance downtime.\u003c\/li\u003e\n\u003cli\u003eRugged, non-conductive housing designed for industrial cabinet environments.\u003c\/li\u003e\n\u003cli\u003eSupports organized cable management and reliable signal integrity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis connector is specifically designed for use with the Siemens Simatic S5-115U PLC series. It is widely employed in process control systems, automated production lines, and industrial machinery where stable, long-term electrical connectivity is required for I\/O signal processing.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e6ES5 490-7LB21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSiemens Simatic S5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e46-pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTermination Type\u003c\/td\u003e\n\u003ctd\u003eScrew terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive (none)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eSiemens Simatic S5-115U series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the PLC system is powered down before attempting to attach or remove the front connector from the I\/O module.\u003c\/li\u003e\n\u003cli\u003eAlign the connector pins carefully with the module interface to prevent bending or damage to the pins.\u003c\/li\u003e\n\u003cli\u003eVerify that all field wires are securely tightened in the screw terminals to prevent intermittent signals due to mechanical vibration.\u003c\/li\u003e\n\u003cli\u003eEnsure the connector is fully seated and locked into the module housing to maintain proper electrical contact.\u003c\/li\u003e\n\u003cli\u003eMaintain proper cable routing to avoid strain on the connector housing and to ensure adequate airflow within the control cabinet.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs this connector compatible with other S5 series modules?\u003c\/h3\u003e\u003cp\u003eThe 6ES5 490-7LB21 is specifically designed for the Simatic S5-115U series. Please verify your specific I\/O module part number to ensure mechanical and electrical compatibility.\u003c\/p\u003e\u003ch3\u003eDoes this component require external power?\u003c\/h3\u003e\u003cp\u003eNo, this is a passive interface component used for routing signals between field wiring and the PLC module; it does not consume electrical power.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":51020333383932,"sku":"6ES5490-7LB21","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_23047b4b-713b-4731-9f3f-ab66e854a526.jpg?v=1787853310","url":"https:\/\/www.electronicplc.com\/es\/products\/siemens-simatic-s5-6es5-490-7lb21-front-connector","provider":"Electronic PLC","version":"1.0","type":"link"}