{"product_id":"siemens-6es5135-3ka12-simatic-s5-135u-21-slot-controller-rack","title":"Siemens 6ES5135-3KA12 Simatic S5 135U 21-Slot Controller Rack","description":"\u003cp\u003eThe Siemens 6ES5135-3KA12 is a 21-slot central controller rack chassis designed for the Simatic S5-135U and S5-155U automation platforms. This rack serves as the primary physical and electrical backplane for housing CPUs, memory modules, and various I\/O interface cards, providing a stable infrastructure for complex, multi-processor industrial control systems. It is engineered for high-availability environments, including power generation, heavy manufacturing, and mineral processing, where reliable signal distribution and modular maintenance are critical.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e21-slot capacity allowing for high-density module integration.\u003c\/li\u003e\n\u003cli\u003ePassive backplane architecture reduces thermal stress and eliminates active electronic components on the bus board, enhancing long-term reliability.\u003c\/li\u003e\n\u003cli\u003eParallel address and data bus paths support high-speed communication between processors and I\/O modules.\u003c\/li\u003e\n\u003cli\u003eRugged mechanical design provides secure module positioning, structural grounding, and vibration resistance.\u003c\/li\u003e\n\u003cli\u003eCompatible with S5-135U and S5-155U processor lines for scalable control configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis controller rack is intended for use in large-scale automation systems requiring centralized processing and extensive I\/O capacity. It is commonly deployed in:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSteel and metal processing production lines.\u003c\/li\u003e\n\u003cli\u003ePower generation and distribution control centers.\u003c\/li\u003e\n\u003cli\u003eLarge-scale mining and material handling facilities.\u003c\/li\u003e\n\u003cli\u003eAutomated batch processing and chemical manufacturing plants.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e6ES5135-3KA12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Family\u003c\/td\u003e\n\u003ctd\u003eSimatic S5-135U \/ S5-155U\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Capacity\u003c\/td\u003e\n\u003ctd\u003e21 Slots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Type\u003c\/td\u003e\n\u003ctd\u003ePassive copper trace bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eExternal (Not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eIndustrial rack mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Connect the rack frame protective earth terminal directly to the cabinet's main ground bus using a minimum 10 mm squared conductor to ensure effective EMI suppression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Handling:\u003c\/strong\u003e Always de-energize the system before inserting or removing any modules to prevent bus transient errors or damage to the backplane pins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Clearance:\u003c\/strong\u003e Ensure at least 100 mm of vertical space is maintained above and below the chassis to allow for adequate natural convection cooling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironment:\u003c\/strong\u003e Install in a clean, dry environment protected from excessive dust, moisture, and corrosive gases.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs the power supply included with this rack?\u003c\/h3\u003e\u003cp\u003eNo, the 6ES5135-3KA12 is a passive chassis and does not include an integrated power supply. External modular power supplies must be sourced separately to provide the required voltage to the backplane.\u003c\/p\u003e\u003ch3\u003eCan this rack be used with S5-155U CPUs?\u003c\/h3\u003e\u003cp\u003eYes, this chassis is designed to be compatible with both S5-135U and S5-155U processor configurations, provided the system architecture is correctly configured for the specific CPU type.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":51000429805820,"sku":"6ES5135-3KA12","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_8d968bdc-a8b2-4761-bdf1-4d0ad28505b5.jpg?v=1787251728","url":"https:\/\/www.electronicplc.com\/products\/siemens-6es5135-3ka12-simatic-s5-135u-21-slot-controller-rack","provider":"Electronic PLC","version":"1.0","type":"link"}