{"product_id":"siemens-6es5955-3nc12-simatic-s5-power-supply-unit","title":"Siemens 6ES5955-3NC12 SIMATIC S5 Power Supply Unit","description":"\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #e2e8f0; padding-bottom: 8px; margin-bottom: 16px;\"\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThis is a Siemens 6ES5955-3NC12 power supply unit, engineered for the SIMATIC S5 automation platform. It provides a stable and reliable \u003cstrong\u003e24V DC\u003c\/strong\u003e output with a current capacity of \u003cstrong\u003e18A\u003c\/strong\u003e, specifically designed to power CC 135U and EU 183U system configurations. The unit's robust construction ensures consistent performance and long-term durability in demanding industrial settings, making it an essential component for maintaining system uptime and process integrity.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #e2e8f0; padding-bottom: 8px; margin-bottom: 16px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; margin-left: 20px; padding-left: 0;\"\u003e\n    \u003cli\u003eProvides a regulated 24V DC output at 18A.\u003c\/li\u003e\n    \u003cli\u003eDesigned for integration with the Siemens SIMATIC S5 series.\u003c\/li\u003e\n    \u003cli\u003eDirect compatibility with CC 135U and EU 183U modules.\u003c\/li\u003e\n    \u003cli\u003eEngineered for high reliability in continuous industrial operation.\u003c\/li\u003e\n    \u003cli\u003eRobust mechanical construction for enhanced durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #e2e8f0; padding-bottom: 8px; margin-bottom: 16px;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; margin-left: 20px; padding-left: 0;\"\u003e\n    \u003cli\u003eLegacy Automation System Maintenance\u003c\/li\u003e\n    \u003cli\u003eManufacturing and Assembly Lines\u003c\/li\u003e\n    \u003cli\u003eProcess Control Systems\u003c\/li\u003e\n    \u003cli\u003eIndustrial Machinery Power Distribution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #e2e8f0; padding-bottom: 8px; margin-bottom: 16px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e2e8f0;\"\u003e\n        \u003cthead\u003e\n            \u003ctr\u003e\n                \u003cth style=\"background-color: #f7fafc; padding: 10px 12px; border: 1px solid #e2e8f0; text-align: left; font-weight: 600; color: #2d3748;\"\u003eSpecification\u003c\/th\u003e\n                \u003cth style=\"background-color: #f7fafc; padding: 10px 12px; border: 1px solid #e2e8f0; text-align: left; font-weight: 600; color: #2d3748;\"\u003eValue\u003c\/th\u003e\n            \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eManufacturer\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eSiemens\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eSeries\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eSIMATIC S5\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eSub-Series\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eS5-135\/155\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eModel\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003e6ES5955-3NC12\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eProduct Type\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003ePower Supply Unit\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eOutput Voltage\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003e24V DC\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eOutput Current\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003e18 A\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eProduct Lifecycle Status\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eObsolete\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eShipping Weight\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003e2.50 kg\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eCommodity Code\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003e85389091\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eECCN\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eN\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eCountry of Origin\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003eGermany (Estimate)\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px 12px; border: 1px solid #e2e8f0;\"\u003e18.8 x 18.9 x 10.5 cm\u003c\/td\u003e\n            \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #e2e8f0; padding-bottom: 8px; margin-top: 24px; margin-bottom: 16px;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 12px 16px; margin-bottom: 20px;\"\u003e\n    \u003cstrong style=\"color: #c53030;\"\u003eCRITICAL WARNING:\u003c\/strong\u003e Hazardous voltages are present. All installation and maintenance activities must be performed by qualified personnel with all power sources de-energized and locked out (LOTO). Failure to comply can result in severe injury or death.\n\u003c\/div\u003e\n\u003col style=\"list-style: none; padding-left: 0; counter-reset: step-counter;\"\u003e\n    \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 16px;\"\u003e\n        \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #fff; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e1\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eDe-energize System:\u003c\/strong\u003e Before installation, completely disconnect and lock out all incoming power to the control cabinet or panel. Verify the absence of voltage using a properly rated test instrument.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 16px;\"\u003e\n        \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #fff; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e2\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eMount the Unit:\u003c\/strong\u003e Securely mount the power supply unit into the designated slot within the SIMATIC S5 rack or chassis. Ensure all mounting hardware is properly tightened to establish a solid mechanical and electrical connection to the backplane.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 16px;\"\u003e\n        \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #fff; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e3\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eConnect Protective Earth (PE):\u003c\/strong\u003e Connect a dedicated protective earth conductor to the designated PE terminal on the unit. This connection is critical for safety and must be the first wire connected and the last disconnected.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 16px;\"\u003e\n        \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #fff; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e4\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eConnect Input Power:\u003c\/strong\u003e Connect the main AC or DC input power lines to the corresponding input terminals. Ensure the source voltage matches the specifications on the unit's nameplate.\u003c\/span\u003e\n    \u003c\/li\u003e\n    \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 16px;\"\u003e\n        \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #fff; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e5\u003c\/span\u003e\n        \u003cspan\u003e\u003cstrong\u003eSystem Verification:\u003c\/strong\u003e After all connections are secure, remove locks and re-energize the system. Check for correct status indicators on the power supply and verify that the 24V DC output is stable and within specification before allowing the PLC to enter RUN mode.\u003c\/span\u003e\n    \u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52716768199019,"sku":"6ES5955-3NC12","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/6es5955-3nc12-qclx2jxpoyj_227b1763-eed9-4862-8bfe-ae0c332dcea6.jpg?v=1767089083","url":"https:\/\/www.plcprotech.com\/products\/siemens-6es5955-3nc12-simatic-s5-power-supply-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}