{"product_id":"allen-bradley-1746-p4-slc-500-power-supply","title":"Allen-Bradley 1746-P4 SLC 500 Power Supply","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1746-P4 is a reliable and high-performance power supply unit designed specifically for the Allen-Bradley SLC 500 modular hardware platform. Engineered to deliver stable backplane power, this unit mounts directly to an SLC 500 rack or chassis to support the processor, local I\/O modules, and communication adapters. It converts standard AC line power into regulated DC voltages required by the backplane, ensuring uninterrupted logic execution and reliable plant-floor automation control.\u003c\/p\u003e\n\u003cp\u003eFeaturing robust hold-up time characteristics, the 1746-P4 maintains controller operation during brief line voltage fluctuations or brownouts. If input voltages drop below acceptable operational thresholds or are removed entirely, the controller executes a controlled shutdown to safeguard user programs and system data. Once normal line conditions are restored, the power supply automatically re-energizes the system, minimizing manual intervention and reducing costly industrial downtime.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Allen-Bradley SLC 500 modular rack systems\u003c\/li\u003e\n  \u003cli\u003eSelectable or auto-ranging AC line voltage input capability (85 to 132 VAC or 170 to 265 VAC)\u003c\/li\u003e\n  \u003cli\u003eProvides high internal current capacity of 10.0 A at 5 VDC and 2.88 A at 24 VDC\u003c\/li\u003e\n  \u003cli\u003eDelivers dedicated 24 VDC user power current capacity up to 1.0 A\u003c\/li\u003e\n  \u003cli\u003eBuilt-in CPU hold-up time of 20 milliseconds at full load to ride through momentary power dips\u003c\/li\u003e\n  \u003cli\u003eRugged thermal performance supporting full-load operation up to 60 degrees Celsius (140 degrees Fahrenheit) without derating\u003c\/li\u003e\n  \u003cli\u003eProvides 2600 VDC dielectric isolation for 1 second to protect sensitive logic components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDiscrete manufacturing and assembly lines\u003c\/li\u003e\n  \u003cli\u003eProcess control and monitoring systems\u003c\/li\u003e\n  \u003cli\u003eMaterial handling and conveyor automation\u003c\/li\u003e\n  \u003cli\u003ePackaging and machinery OEM equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eExact Model\u003c\/td\u003e\n      \u003ctd\u003e1746-P4\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eSLC 500 Power Supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePlatform\u003c\/td\u003e\n      \u003ctd\u003eSLC 500\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLine Voltage Input\u003c\/td\u003e\n      \u003ctd\u003e85 to 132 VAC or 170 to 265 VAC (User Selectable)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLine Frequency\u003c\/td\u003e\n      \u003ctd\u003e47 to 63 Hz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBackplane Current Capacity (5 VDC)\u003c\/td\u003e\n      \u003ctd\u003e10.0 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBackplane Current Capacity (24 VDC)\u003c\/td\u003e\n      \u003ctd\u003e2.88 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eUser Power Voltage Range\u003c\/td\u003e\n      \u003ctd\u003e20.4 to 27.6 VDC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eUser Power Current Capacity\u003c\/td\u003e\n      \u003ctd\u003e1.0 A at 24 VDC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCPU Hold-Up Time\u003c\/td\u003e\n      \u003ctd\u003e20 ms (Full Load) \/ 3000 ms (No Load)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n      \u003ctd\u003e2600 VDC for 1 s\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd\u003e0 to 60 Celsius (32 to 140 Fahrenheit)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCountry of Origin\u003c\/td\u003e\n      \u003ctd\u003eUnited States\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections \/ Interfaces\u003c\/h3\u003e\n\u003cp\u003eThe unit features heavy-duty screw terminal connections on the front faceplate for secure termination of incoming AC line power, earth ground, and 24 VDC user power wiring. A dedicated metal tab ensures solid chassis bonding when installed securely into the left-most slot of an SLC 500 rack.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cp\u003eThe 1746-P4 mounts exclusively in the far-left slot (Slot 0) of an SLC 500 modular chassis. Ensure that all incoming AC power is disconnected before installing or removing the power supply. Verify that the AC line voltage selector switch matches the incoming facility voltage before applying power. Adequate clearance should be maintained around the chassis to allow proper convective cooling across the module housing.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53770311401835,"sku":"1746-P4","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1746-P4_1200x1200_fec67314-ed1d-4d4c-8777-8707ba373da7.jpg?v=1787741052","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1746-p4-slc-500-power-supply","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}