{"product_id":"siemens-6es5951-7nb21-programmable-logic-controller-module","title":"Siemens 6ES5951-7NB21 Programmable Logic Controller Module","description":"\u003cdiv\u003e\u003cp\u003eSiemens 6ES5951-7NB21 is a 951-series power supply module designed for SIMATIC S5 PLC systems, specifically the S5-115U\/H rack-based controllers used in legacy industrial automation. It accepts standard 120\/230 V AC mains and delivers a regulated 5 V DC output capable of delivering up to 3 A to the S5 backplane, CPU, and peripheral modules, ensuring a stable logic rail even under transient loads. This module functions as the primary DC power source within the S5-115U\/H configuration, providing the essential rails that feed the CPU and I\/O circuitry and enabling reliable operation in environments with typical industrial electrical characteristics. Used in legacy automation installations, the 6ES5951-7NB21 is compatible with the 951 family components and is widely cataloged as a replacement power supply for SIMATIC S5 systems, frequently sourced from distributors for repair, spare-part, or retrofit projects, helping maintain continuity of control in established plants.\u003c\/p\u003e\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":46268522627306,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-018.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/siemens-6es5951-7nb21-programmable-logic-controller-module","provider":"GTG Hardware","version":"1.0","type":"link"}