{"product_id":"siemens-simatic-s5-6es5951-7lb14-ps-951-power-supply-module","title":"Siemens 6ES5951-7LB14 PS 951 Power Supply Module for Simatic S5-115U\/H","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Siemens 6ES5951-7LB14, part of the PS 951 series, is a robust power supply unit engineered specifically for the Simatic S5-115U and S5-115H programmable logic controller systems. This module provides essential power conversion, transforming standard industrial AC line voltages into the stable 5 V DC supply required for backplane communication, CPU processing, and I\/O module operation. Designed for high-availability environments, it ensures consistent performance in demanding industrial facilities, including power generation and automated manufacturing sectors.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned for seamless integration with S5-115U and S5-115H rack-based systems.\u003c\/li\u003e\n\u003cli\u003eWide-range AC input compatibility supporting 110\/120 V AC or 220\/240 V AC at 50\/60 Hz.\u003c\/li\u003e\n\u003cli\u003eDelivers a reliable 3 A output current to the system backplane.\u003c\/li\u003e\n\u003cli\u003eIntegrated battery backup compartment supports data retention for internal system memory.\u003c\/li\u003e\n\u003cli\u003ePassive cooling design utilizes an aluminum chassis for effective thermal management.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis power supply is intended for use in legacy Simatic S5 automation environments. It is suitable for control systems in water treatment plants, heavy machinery control, and industrial process monitoring where stable 5 V DC logic power is critical to preventing system downtime or memory loss during grid fluctuations.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e6ES5951-7LB14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSimatic S5-115U \/ S5-115H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e110 to 240 VAC (50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Rating\u003c\/td\u003e\n\u003ctd\u003e5 VDC at 3 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e35 W\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\u003eBattery Interface\u003c\/td\u003e\n\u003ctd\u003eC-Size Lithium Cell (CA-6EW1000-7AA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the main power source is disconnected before inserting or removing the module from the S5 rack.\u003c\/li\u003e\n\u003cli\u003eVerify that the input voltage selector matches your local utility power before initial power-up.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the module's ventilation windows to allow for proper convective cooling.\u003c\/li\u003e\n\u003cli\u003eHandle the module using standard ESD (Electrostatic Discharge) precautions to prevent damage to internal circuitry.\u003c\/li\u003e\n\u003cli\u003eSecure the module firmly into the rack backplane to ensure reliable electrical contact.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary function of the 6ES5951-7LB14?\u003c\/h3\u003e\u003cp\u003eThis module acts as the central power supply for the Simatic S5-115U\/H rack, converting AC line power into the 5 V DC required for the PLC rack's internal components.\u003c\/p\u003e\u003ch3\u003eDoes this module support battery backup?\u003c\/h3\u003e\u003cp\u003eYes, it features an integrated compartment for a C-size Lithium battery, which is used to back up the PLC's internal RAM and system registers during power outages.\u003c\/p\u003e\u003ch3\u003eIs this module compatible with other S5 series racks?\u003c\/h3\u003e\u003cp\u003eThe 6ES5951-7LB14 is specifically designed for the S5-115U and S5-115H series. Please verify your chassis model before installation.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":44019657572442,"sku":"6ES5951-7LB14","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_6683a822-592d-492a-ba90-68b0a8eb8e37.jpg?v=1788664565","url":"https:\/\/www.spareoil.com\/products\/siemens-simatic-s5-6es5951-7lb14-ps-951-power-supply-module","provider":"SpareOil Automation","version":"1.0","type":"link"}