{"product_id":"allen-bradley-1746-p4-slc-500-chassis-power-supply-module","title":"Allen-Bradley 1746-P4 SLC 500 Chassis Power Supply Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1746-P4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as the high-capacity power foundation for the SLC 500 modular hardware platform. It mounts directly to the left side of any 1746 chassis, providing regulated DC backplane power to the CPU and I\/O modules. This specific model delivers a robust 10 Amps at 5V DC, making it the ideal choice for large, high-density chassis configurations that exceed the limits of standard power units. We offer this component in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New, original condition\u003c\/strong\u003e, ensuring your legacy infrastructure maintains factory-standard stability and performance.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\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\u003eInput Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120V to 220V AC (Auto-ranging)\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 to 63 Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInternal Current Capacity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10.0 A at 5V DC; 2.88 A at 24V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTypical Line Power Requirement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e180VA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInrush Current (Max)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e45 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCPU Hold-up Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e20 ms (Full Load) \/ 3000 ms (No Load)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 60 °C (32 to 140 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFuse Protection\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1746-F1 or equivalent\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.00 lbs (0.91 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Power Delivery:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1746-P4 provides double the 5V DC current capacity of standard SLC power supplies. This allows engineers to populate 10-slot and 13-slot chassis with power-hungry specialty modules, such as high-speed counters or analog interfaces, without risking voltage drops or system resets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExtended Hold-up Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated capacitors provide a 20 ms hold-up time at full load. This buffer allows the CPU to execute safe shutdown routines or bridge minor power sags, preventing data corruption during unstable line conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGlobal Voltage Versatility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe unit accepts a wide input range from 120V to 220V AC. This adaptability simplifies spare parts inventory for global facilities and ensures compatibility with various international power grids.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Efficiency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOptimized circuitry minimizes heat dissipation during AC-to-DC conversion. This prevents localized hotspots within the 1746 chassis, extending the operational lifespan of the adjacent processor and I\/O cards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Circuit Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAn internal, replaceable 1746-F1 fuse shields the backplane from input surges. This hardware-level protection isolates the expensive CPU and I\/O modules from external electrical faults.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I know if I need the 1746-P4 instead of the 1746-P1 or P2?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou must calculate the total current draw of all modules in your chassis. If your 5V DC requirement exceeds 5 Amps, or if your 24V DC auxiliary requirement is high, the 1746-P4 becomes mandatory to prevent power-overload shutdowns.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace the fuse myself if it blows?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 1746-P4 uses a standard 1746-F1 fuse. Always disconnect the main AC power before opening the fuse access door to ensure technician safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this unit compatible with all SLC 500 chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1746-P4 mounts to any standard 1746 chassis (A4, A7, A10, A13). It occupies the dedicated power supply slot on the far left, leaving all numbered slots available for I\/O and processors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a refurbished or \"New Old Stock\" (NOS) unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee this unit is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e. It ships in the original Allen-Bradley factory packaging with intact security seals, ensuring the internal capacitors and components are fresh and have zero previous field hours.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53131853627576,"sku":"1746-P4","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1746-P41.jpg?v=1774606140","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1746-p4-slc-500-chassis-power-supply-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}