{"product_id":"1756-pb75r-industrial-automation-module-by-allen-bradley","title":"1756-PB75R Industrial Automation Module by Allen-Bradley","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-PB75R\u003c\/strong\u003e is a ControlLogix redundant power supply module designed to ensure continuous operation of your automation system. When paired with a second unit, it forms a hot-standby assembly: one unit actively powers the chassis while the other stands by, automatically taking over if a fault occurs. This architecture directly reduces the risk of unplanned downtime caused by power supply failure.\u003c\/p\u003e\u003cp\u003ePart of the Rockwell Automation ControlLogix family, the \u003cstrong\u003e1756-PB75R\u003c\/strong\u003e accepts a 24V DC nominal input (range 19–32V DC) and delivers 75W of output power across the operating temperature range of 0–60°C (32–140°F). With built-in status indicators and automatic chassis load sharing, this module simplifies diagnostics and balances power draw across redundant supplies.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eKey parameters of the \u003cstrong\u003e1756-PB75R\u003c\/strong\u003e are listed below. All values are from the manufacturer's data.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e18–32V DC (nominal 24V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e75W @ 0–60°C (32–140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Capacity @ 1.2V\u003c\/td\u003e\n\u003ctd\u003e1.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Capacity @ 3.3V\u003c\/td\u003e\n\u003ctd\u003e4A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Capacity @ 5.1V\u003c\/td\u003e\n\u003ctd\u003e13A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Capacity @ 24V\u003c\/td\u003e\n\u003ctd\u003e2.8A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInrush Current (max)\u003c\/td\u003e\n\u003ctd\u003e30A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Power (max)\u003c\/td\u003e\n\u003ctd\u003e110W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0–60°C (32–140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNonoperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40–85°C (-40–185°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity (operating)\u003c\/td\u003e\n\u003ctd\u003e5–95% noncondensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration (operating)\u003c\/td\u003e\n\u003ctd\u003e2G @ 10–500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock (operating \/ nonoperating)\u003c\/td\u003e\n\u003ctd\u003e30G \/ 50G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (approx.)\u003c\/td\u003e\n\u003ctd\u003e140 x 112 x 145 mm (5.51 x 4.41 x 5.71 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (approx.)\u003c\/td\u003e\n\u003ctd\u003e0.95 kg (2.10 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Chassis\u003c\/td\u003e\n\u003ctd\u003e1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e1756-PB75R\u003c\/strong\u003e is ideal for mission-critical processes where power continuity is non-negotiable. Typical applications include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing lines\u003c\/strong\u003e – Keep PLCs running through brief power interruptions, preventing line stops and product loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess control\u003c\/strong\u003e – In chemical or oil \u0026amp; gas plants, redundant power minimizes the chance of a controller shutdown that could trigger safety interlocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUtilities and infrastructure\u003c\/strong\u003e – Water treatment, power distribution, and building automation systems benefit from hot-standby capability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy implementing a redundant pair, operators can perform maintenance or replacement of one supply without shutting down the entire control system.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the \u003cstrong\u003e1756-PB75R\u003c\/strong\u003e in a compatible 1756 chassis (A4, A7, A10, A13, A17). Ensure the chassis is properly grounded and that input wiring uses 2.5 mm² (14 AWG) copper wire with insulation rated for at least 90°C (194°F). The module’s input connections are auto-sensing, so no manual voltage selection is required.\u003c\/p\u003e\u003cp\u003eFor redundant operation, connect the two power supplies using the 1756-CPR2 cable to the 1756-PSCA2 chassis adapter. \u003cstrong\u003eImportant:\u003c\/strong\u003e Always disconnect power before connecting or disconnecting this cable to avoid electrical arcing, which can be hazardous in explosive environments.\u003c\/p\u003e\u003cp\u003eAfter installation, verify the status indicator shows proper operation. The module supports hot-swap replacement in nonredundant mode, meaning you can replace a faulty unit while the system remains powered.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eRegular inspection of the \u003cstrong\u003e1756-PB75R\u003c\/strong\u003e ensures long-term reliability. Check for dust accumulation on the enclosure and ensure airflow is not blocked. Operate within the specified temperature and humidity ranges; the module is rated for 0–60°C and 5–95% noncondensing humidity. Vibration and shock limits are 2G at 10–500 Hz and 30G operating shock, respectively. Avoid exposing the unit to conditions beyond these limits.\u003c\/p\u003e\u003cp\u003eBecause the redundant design automatically transfers load, you can inspect or replace one unit without interrupting the process. This reduces maintenance downtime and extends overall system availability.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e1756-PB75R\u003c\/strong\u003e is designed for the ControlLogix platform and fits in the 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17 chassis. It works with any ControlLogix controller and communicates over the backplane to provide power to all modules. No additional communication protocols are required for operation.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore ordering, verify your chassis model and confirm that your system requires redundant power. If you are upgrading an existing single-supply setup, ensure the chassis has an available slot for the second unit. The \u003cstrong\u003e1756-PB75R\u003c\/strong\u003e is a genuine Rockwell Automation part, ensuring full compatibility and performance.\u003c\/p\u003e\u003cp\u003eWhen sourcing this module, choose a trusted supplier like \u003cstrong\u003ePLC Source PRO\u003c\/strong\u003e to guarantee authentic parts and reliable delivery. We stock a wide range of ControlLogix spares and accessories.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44437351825507,"sku":"1756-PB75R","price":280.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1756-2WS_6f557e89-a895-44f6-b75e-0a3c5ecb2a0d.jpg?v=1785817340","url":"https:\/\/www.plcsourcepro.com\/products\/1756-pb75r-industrial-automation-module-by-allen-bradley","provider":"PLC Source PRO","version":"1.0","type":"link"}