{"product_id":"6es5-955-3lc13-siemens-simatic-s5-135-155-power-supply","title":"Siemens 6ES5955-3LC13 Simatic S5-135\/155 Power Supply Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe 6ES5 955-3LC13 (PS955) power supply module is engineered to provide stable, regulated electrical power for Siemens Simatic S5-135U and S5-155U central controller racks and expansion chassis. This robust unit is designed for demanding industrial environments, ensuring consistent operation of backplane electronics, logic processing modules, and I\/O bus interfaces by converting AC mains into reliable DC power.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSelectable input voltage range: 115 VAC or 220 VAC at 50 Hz.\u003c\/li\u003e\n\u003cli\u003eRegulated output: 18 Amp at 5 VDC for backplane and logic power.\u003c\/li\u003e\n\u003cli\u003eIntegrated battery backup support using the CA-6EW1000-7AA lithium battery to maintain RAM and real-time clock data during power loss.\u003c\/li\u003e\n\u003cli\u003eComprehensive protection features including overvoltage protection, short-circuit current limiting, and galvanic isolation.\u003c\/li\u003e\n\u003cli\u003eFront-panel LED diagnostics for monitoring AC input and DC rail status.\u003c\/li\u003e\n\u003cli\u003ePassive cooling design with thermal cutoff protection for sustained reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis power supply is a critical component for legacy Simatic S5 automation systems, commonly utilized in continuous process industries such as petroleum refineries, thermal power generation, metallurgical processing, and large-scale mining operations.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e6ES5 955-3LC13 (PS955)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e115 VAC \/ 220 VAC (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency\u003c\/td\u003e\n\u003ctd\u003e50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e18 Amp @ 5 VDC\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\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\u003e5% to 95% 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 rack is fully powered down before inserting or removing the power supply module.\u003c\/li\u003e\n\u003cli\u003eVerify the input voltage selector switch matches the local AC supply (115V or 220V) before energizing.\u003c\/li\u003e\n\u003cli\u003eEnsure proper seating in the S5 rack backplane to maintain electrical contact and structural stability.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the module to allow for passive cooling airflow.\u003c\/li\u003e\n\u003cli\u003eHandle with care to prevent electrostatic discharge (ESD) damage to internal circuitry.\u003c\/li\u003e\n\u003cli\u003eRegularly inspect the backup battery (CA-6EW1000-7AA) and replace according to the maintenance schedule to prevent data loss.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs this unit compatible with all S5 racks?\u003c\/h3\u003e\u003cp\u003eThe 6ES5 955-3LC13 is specifically designed for the Simatic S5-135U and S5-155U series. Please verify your rack model and current requirements before installation.\u003c\/p\u003e\u003ch3\u003eWhat is the purpose of the battery compartment?\u003c\/h3\u003e\u003cp\u003eThe front-accessible compartment holds a lithium battery to provide backup power for the CPU RAM and internal real-time clock, ensuring memory retention during main power outages.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":44598433906776,"sku":"6ES5955-3LC13","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/wm_1_4bda05d7-9830-4fa4-a44d-a185b3d654a7.jpg?v=1786725897","url":"https:\/\/www.industriaxplc.com\/id\/products\/6es5-955-3lc13-siemens-simatic-s5-135-155-power-supply","provider":"IndustriaX Limited","version":"1.0","type":"link"}