{"product_id":"1768-pa3-allen-bradley-compactlogix-120-240v-ac-power-supply","title":"1768-PA3 Allen-Bradley CompactLogix 120\/240V AC Power Supply","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview and System Power Architecture\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-PA3 (1768PA3)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-efficiency AC input power supply specifically designed for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-L43 and 1768-L45 CompactLogix\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrollers. As part of the 1768-series architecture, this module provides the essential regulated DC voltages required to power the controller, the 1768 backplane, and any attached 1768 communication modules (such as the 1768-ENBT or 1768-CNB). The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-PA3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis engineered to handle the higher power demands of the 1768-series, which supports integrated motion and high-performance networking, making it a critical foundation for mid-range automation systems in conveyor control, assembly lines, and specialized process skids.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHardware Architecture and Electrical Logic\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-PA3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emounts directly to the left side of the 1768 controller. It converts standard industrial AC line power into the precise DC rails needed for internal logic and communication circuitry.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal AC Input:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports a wide input range of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e85–265V AC\u003c\/strong\u003e, allowing for global deployment in both 110V and 220V power systems without the need for external transformers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExpansion Capacity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSpecifically designed to provide sufficient current for up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003etwo 1768-series communication or motion modules\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ealongside the main processor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRegulated Output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProvides a stabilized\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5V DC and 24V DC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebackplane output, ensuring that voltage fluctuations on the factory floor do not affect the deterministic performance of the PLC logic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Status Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a front-panel \"DC OK\" LED that provides immediate visual confirmation that the supply is outputting the correct voltages.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e1768-PA3\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAllen-Bradley \/ Rockwell Automation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120V AC \/ 240V AC (Nominal)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Frequency\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e47–63 Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Power (Max)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e32.5 W @ 5V DC; 28 W @ 24V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTotal Power Capacity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e60.5 W\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInrush Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30 A (Max)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 60 Celsius\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eStorage Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40 to 85 Celsius\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e1.2 kg\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eIntegrated Technical FAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 1768-PA3 with 1769-L3x controllers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-PA3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis physically and electrically designed only for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-L43 and 1768-L45\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrollers. 1769-series controllers use 1769-PA2 or PA4 power supplies, which have a different form factor and backplane connector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat causes the \"DC OK\" LED to turn off?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn unlit LED typically indicates one of three things: a loss of AC input power, an internal fuse failure, or an over-current condition on the backplane (often caused by a faulted communication module). Always measure the input terminals first to confirm line power is present.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module provide power for the field I\/O?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-PA3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epowers the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003econtroller and the 1768-series modules only\u003c\/strong\u003e. If you have 1769-series I\/O modules attached to the right side of the controller, those I\/O modules may require their own 1769-series power supply (like a 1769-PA2) depending on the total current draw.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eEngineering \u0026amp; Installation Protocols\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring Safety:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUse a minimum of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e14 AWG (2.1 mm²)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewire for AC input connections. Ensure the \"Ground\" terminal is connected to a clean, low-impedance earth ground to help filter out electrical noise and protect against surges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Clearance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-PA3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edissipates heat through convection. Maintain a minimum of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e50 mm (2 in.)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof clearance above and below the module. If the module is installed in a small, unventilated enclosure, the internal thermal protection may trip, causing the PLC to shut down.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFinger-Safe Terminals:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe terminal block features a protective cover. Always keep this cover closed during operation to prevent accidental contact with high-voltage AC terminals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEngineering Advantages\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1768-PA3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estands out for its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003erobust power-to-footprint ratio\u003c\/strong\u003e. It is built to support the high-speed data processing and motion synchronization required by the 1768-L4x series, which was a pioneer in bringing high-end Logix performance to a compact form factor. Its ability to bridge the gap between heavy-duty industrial power and sensitive micro-electronics makes it a reliable choice for \"Workhorse\" applications in the packaging and material handling industries where power quality may be inconsistent.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695191617899,"sku":"1768-PA3","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1768-pa3-compactlogix-power-supplies-v4fofautowh_273d2c06-390c-4de3-ae56-5d41e0de6646.jpg?v=1766114652","url":"https:\/\/www.plcprotech.com\/products\/1768-pa3-allen-bradley-compactlogix-120-240v-ac-power-supply","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}