{"product_id":"1756-pa75k-allen-bradley-controllogix-ac-power-supply-75w","title":"1756-PA75K Allen-Bradley ControlLogix AC Power Supply 75W","description":"\n\u003ch3\u003e\u003cstrong\u003e1756-PA75K | ControlLogix AC Power Supply Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #008000;\"\u003eAllen-Bradley 1756-PA75K\u003c\/span\u003e\u003c\/strong\u003e is an AC power supply module for compatible Rockwell Automation ControlLogix chassis. It converts incoming AC power into the DC power required by chassis backplane components.\u003c\/p\u003e\n\n\u003cp\u003eDesigned for installation on the left side of a compatible 1756 chassis, this module supplies multiple DC output rails. Its rated output reaches 75 W across the specified 0–60°C operating range.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e1756-PA75K ControlLogix power supply\u003c\/strong\u003e accepts a nominal 120–240 VAC input and supports a wider 85–265 VAC range. Its 47–63 Hz input frequency supports common industrial AC power systems.\u003c\/p\u003e\n\n\u003cp\u003eThis model is a non-redundant power supply. Engineers should calculate chassis power demand and verify each module's current requirements before selecting a replacement.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications at a Glance\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eRockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCatalog Number\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #008000;\"\u003e1756-PA75K\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProduct Family\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eControlLogix\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eAC Power Supply Module\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePower Supply Design\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eNon-redundant\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eNominal Input Voltage\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e120–240 VAC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInput Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e85–265 VAC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInput Frequency\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e47–63 Hz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eMaximum Input Power\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e100 W \/ 100 VA, according to supplied specifications\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eRated Output Power\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e75 W at 0–60°C, according to supplied specifications\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eMaximum Inrush Current\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e20 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOutput Capacity at 1.2 VDC\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1.5 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOutput Capacity at 3.3 VDC\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e4 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOutput Capacity at 5.1 VDC\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e13 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOutput Capacity at 24 VDC\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2.8 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eHold-Up Time at 85 VAC, 60 Hz\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2 cycles, according to supplied specifications\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eHold-Up Time at 120 VAC, 60 Hz\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e6 cycles, according to supplied specifications\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eHold-Up Time at 220 VAC, 60 Hz\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e20 cycles, according to supplied specifications\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eRated Isolation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e250 VAC continuous, according to supplied specifications\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e85.3 BTU\/hr, according to supplied information\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInstallation Position\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eLeft side of the compatible 1756 chassis\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCompatible Chassis Listed\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17; verify series compatibility\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eRecommended Wire\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e14 AWG solid or stranded copper, rated for 90°C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEnclosure Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eOpen-style\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e0–60°C (32–140°F)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eApproximate Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e140 × 112 × 145 mm (5.51 × 4.41 × 5.71 in.)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eApproximate Weight\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eApproximately 1.0–1.1 kg, depending on the supplied specification\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eEngineering note:\u003c\/strong\u003e The supplied source lists slightly different output power and weight figures. Confirm the exact catalog revision and official documentation before final design approval.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003ePower Architecture and System Value\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple DC output rails:\u003c\/strong\u003e Supplies the chassis backplane through specified 1.2 VDC, 3.3 VDC, 5.1 VDC, and 24 VDC output capacities.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide AC input range:\u003c\/strong\u003e Accepts 85–265 VAC within the specified operating requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput disturbance tolerance:\u003c\/strong\u003e Hold-up time helps bridge brief input interruptions within the specified conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChassis-mounted design:\u003c\/strong\u003e Installs on the left side of a compatible 1756 ControlLogix chassis.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercurrent protection:\u003c\/strong\u003e Supplied information describes overcurrent protection and a non-replaceable fuse.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCalculate the actual chassis load before commissioning. Do not treat the total wattage as a substitute for checking each DC output rail.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eSuitable Equipment and Industrial Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControlLogix PLC cabinets:\u003c\/strong\u003e Supply power to compatible controller chassis and installed modules.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturing lines:\u003c\/strong\u003e Support PLC-based machine sequencing, conveyor control, and production equipment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcess automation:\u003c\/strong\u003e Power compatible chassis used for monitoring, control, and instrument integration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUtilities and infrastructure:\u003c\/strong\u003e Support compatible ControlLogix systems in pumping, water treatment, and facility automation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial equipment upgrades:\u003c\/strong\u003e Replace a matching power supply after verifying chassis compatibility and electrical demand.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis module supplies chassis power. It does not independently provide PLC logic, analog measurement, or network communication functions.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eInstallation and Commissioning Procedure\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify the catalog number:\u003c\/strong\u003e Match the complete 1756-PA75K designation and the required hardware revision.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfirm chassis compatibility:\u003c\/strong\u003e Check the chassis model and series against the manufacturer's documentation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalculate backplane demand:\u003c\/strong\u003e Compare the installed modules' current requirements with each available DC output rating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIsolate incoming power:\u003c\/strong\u003e Apply site lockout procedures before removing or installing the power supply.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInspect wiring:\u003c\/strong\u003e Check conductor size, insulation rating, terminals, grounding, and incoming AC voltage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstall the module:\u003c\/strong\u003e Mount the power supply in its designated left-side chassis position.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRestore power safely:\u003c\/strong\u003e Follow the manufacturer's startup sequence and verify supply status indications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValidate operation:\u003c\/strong\u003e Check controller startup, module status, and backplane communication.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003eNever insert or remove the power supply under power unless the exact hardware and procedure explicitly permit it. Follow site electrical safety requirements and the manufacturer's installation manual.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFault Diagnosis and Maintenance\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChassis fails to start:\u003c\/strong\u003e Measure incoming AC voltage and inspect supply connections and protective devices.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRepeated controller resets:\u003c\/strong\u003e Review input voltage stability, inrush conditions, and chassis power demand.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple module faults:\u003c\/strong\u003e Check the power supply and backplane before replacing individual I\/O modules.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnexpected shutdowns:\u003c\/strong\u003e Compare event logs with power interruptions and facility electrical disturbances.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExcessive cabinet temperature:\u003c\/strong\u003e Inspect ventilation, surrounding heat sources, and installed module loading.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermittent operation:\u003c\/strong\u003e Check terminal tightness, wiring condition, and incoming power quality under approved procedures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eField example:\u003c\/strong\u003e Several chassis modules report faults after a production line starts. An engineer checks incoming AC voltage and the backplane load before replacing the controller.\u003c\/p\u003e\n\n\u003cp\u003eIf the supply repeatedly loses output, inspect the input source and chassis demand first. A damaged supply may require replacement, but overload or unstable incoming power can cause similar symptoms.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eSelection and Compatibility Checklist\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCatalog number:\u003c\/strong\u003e Confirm that the required part is 1756-PA75K rather than a similar power supply model.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput power:\u003c\/strong\u003e Verify the site's AC voltage and frequency against the specified range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChassis series:\u003c\/strong\u003e Check the exact chassis model and revision for compatibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoad calculation:\u003c\/strong\u003e Confirm that each DC output rail can support the installed modules.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting position:\u003c\/strong\u003e Ensure that the chassis has the required left-side power supply position.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRedundancy requirements:\u003c\/strong\u003e This model is non-redundant. Select an approved architecture if the application requires redundant power.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnvironmental requirements:\u003c\/strong\u003e Check cabinet temperature, ventilation, and installation conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eEnvironmental Ratings and Compliance\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e 0–60°C under the supplied specifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput frequency:\u003c\/strong\u003e 47–63 Hz.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire specification:\u003c\/strong\u003e 14 AWG copper conductors rated for 90°C, according to the supplied information.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e Open-style; install inside a suitable protective enclosure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePollution and installation category:\u003c\/strong\u003e Verify the applicable environmental ratings against the official technical documentation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e Confirm applicable UL, CSA, CE, and hazardous-location approvals for the exact catalog number and revision.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDo not assume a certification applies to every installation. Verify the product label, manufacturer documentation, and local electrical requirements before commissioning.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003ePackaging, Shipping, and Warranty\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage contents:\u003c\/strong\u003e 1 × Allen-Bradley 1756-PA75K AC power supply module, according to the confirmed order.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccessories:\u003c\/strong\u003e Additional parts or documentation are included only when stated in the order.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShipping carriers:\u003c\/strong\u003e FedEx, UPS, and DHL, subject to destination and service availability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcessing target:\u003c\/strong\u003e 24–48 hours after order confirmation, subject to stock verification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month warranty under Global PLC Spare HUB's applicable sales terms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eContact our team to confirm availability, packaging details, shipping arrangements, and warranty coverage before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003ePower supply selection requires more than matching the AC input voltage. Engineers should calculate backplane demand across every DC output rail.\u003c\/p\u003e\n\n\u003cp\u003eFor example, a chassis may restart when several high-load modules operate together. The engineer should compare the installed module loads with the supply's individual current limits.\u003c\/p\u003e\n\n\u003cp\u003eInput voltage also deserves attention during startup. A supply may experience a brief voltage drop when other equipment starts on the same circuit.\u003c\/p\u003e\n\n\u003cp\u003eCheck incoming voltage, grounding, wiring integrity, and chassis loading before concluding that the power supply has failed. These checks help separate source problems from module faults.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ1: How do I calculate whether this power supply can support my existing chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eList every installed module and its current requirements for each DC rail. Compare the totals against the power supply ratings and the chassis compatibility documentation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ2: Why can a power supply show normal input voltage while the controller still resets?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck transient voltage drops, chassis loading, terminal connections, and individual output requirements. A normal idle reading may not reveal a problem under peak load.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ3: Can I use the 1756-PA75K where a redundant power architecture is required?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis model is non-redundant. Review the system availability requirements and select a manufacturer-approved redundant solution when the application requires it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ4: What should I verify when replacing a similar-looking ControlLogix power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompare the complete catalog number, AC input range, DC output ratings, chassis series, mounting requirements, and applicable hardware documentation before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ5: Which details should I provide to help identify the right replacement?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProvide the existing power supply label, chassis catalog number, incoming AC voltage, installed module list, and required quantity. These details help our team review compatibility and prepare a quotation.\u003c\/p\u003e\n","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":67651543826614,"sku":"1756-PA75K","price":106.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1756-PA75K-1.jpg?v=1792121957","url":"https:\/\/www.plcsparehub.com\/products\/1756-pa75k-allen-bradley-controllogix-ac-power-supply-75w","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}