{"product_id":"siemens-simatic-s5-6es5-185-3ua13-expansion-subrack","title":"Siemens 6ES5185-3UA13 Simatic S5 EU185 Expansion Subrack","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Siemens 6ES5185-3UA13 (EU185) is a high-capacity 21-slot expansion subrack designed for the Simatic S5-135U and S5-155U programmable logic controller systems. This robust chassis provides the necessary physical mounting and backplane communication infrastructure to extend I\/O capabilities in large-scale industrial automation environments. Featuring an integrated 110\/230 VAC power supply, the unit delivers stable, regulated power directly to the backplane, supporting high-density configurations of digital, analog, and communication modules without overloading the primary controller rack.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e21-slot capacity for extensive I\/O and communication module integration.\u003c\/li\u003e\n\u003cli\u003eIntegrated multi-voltage power supply (110\/230 VAC selectable).\u003c\/li\u003e\n\u003cli\u003eDesigned for seamless integration with Simatic S5-135U and S5-155U systems.\u003c\/li\u003e\n\u003cli\u003eHeavy-duty aluminum alloy construction for structural integrity and EMI shielding.\u003c\/li\u003e\n\u003cli\u003eParallel bus architecture ensuring deterministic signal timing and high-speed data transfer.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis expansion subrack is engineered for critical industrial infrastructures requiring high-density I\/O, including thermal power plants, oil and gas refining units, and heavy manufacturing control systems. It is ideal for system expansion or as a direct replacement for legacy S5 rack hardware to maintain operational continuity.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e6ES5185-3UA13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Family\u003c\/td\u003e\n\u003ctd\u003eSimatic S5-135U \/ S5-155U\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Count\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e110 VAC \/ 230 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e95 percent (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the subrack is mounted in a clean, dry, and vibration-free environment within an industrial cabinet.\u003c\/li\u003e\n\u003cli\u003eVerify that the power supply input voltage selector is correctly set to match the local supply (110 VAC or 230 VAC) before applying power.\u003c\/li\u003e\n\u003cli\u003eAlways power down the system before inserting or removing modules to prevent electrical damage to the backplane connectors.\u003c\/li\u003e\n\u003cli\u003eEnsure proper grounding of the chassis to the cabinet frame to maintain EMI protection and safety.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the unit to allow for natural convection cooling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs this subrack compatible with all S5 modules?\u003c\/h3\u003e\u003cp\u003eThe 6ES5185-3UA13 is designed for standard Simatic S5-135U\/155U modules. Please verify the physical form factor and electrical requirements of your specific I\/O modules against the S5 system documentation.\u003c\/p\u003e\u003ch3\u003eDoes this unit require an external power supply?\u003c\/h3\u003e\u003cp\u003eNo, this unit features an integrated power supply that accepts 110\/230 VAC line power and converts it to the required internal DC bus voltages.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":50915338486012,"sku":"6ES5185-3UA13","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_3f03f6c6-cc43-4b09-83e9-b0ad0811f57e.jpg?v=1785824066","url":"https:\/\/www.electronicplc.com\/products\/siemens-simatic-s5-6es5-185-3ua13-expansion-subrack","provider":"Electronic PLC","version":"1.0","type":"link"}