{"product_id":"allen-bradley-1746-p1-standard-ac-power-supply","title":"Allen-Bradley 1746-P1 SLC 500 Power Supply Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 1746-P1 is a dedicated power supply module designed for use within the SLC 500 programmable logic controller system. This rack-mounted unit provides the necessary DC power to the backplane, supporting the CPU and various I\/O modules installed in the chassis. It is engineered to operate across a wide range of AC line voltages, ensuring compatibility with diverse industrial power environments.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWide input voltage range: 85-132 VAC or 170-265 VAC (auto-switching\/selectable).\u003c\/li\u003e\n\u003cli\u003eRobust power output: Provides 2A at 5 VDC and 0.46A at 24 VDC to the backplane.\u003c\/li\u003e\n\u003cli\u003eIntegrated 24 VDC user power output for field devices.\u003c\/li\u003e\n\u003cli\u003eHigh-reliability design with 1800V AC RMS isolation for 1 second.\u003c\/li\u003e\n\u003cli\u003eCPU hold-up time of 20 ms at full load to ensure stable operation during brief power interruptions.\u003c\/li\u003e\n\u003cli\u003eRack-mount form factor for seamless integration into standard SLC 500 chassis.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e85-132 \/ 170-265 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e47-63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Current Capacity\u003c\/td\u003e\n\u003ctd\u003e2A at 5 VDC, 0.46A at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Power Output\u003c\/td\u003e\n\u003ctd\u003e200 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Inrush Current\u003c\/td\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003e135 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 degC to 60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Protection\u003c\/td\u003e\n\u003ctd\u003e1746-F1 or equivalent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the power supply is installed in the leftmost slot of the SLC 500 chassis.\u003c\/li\u003e\n\u003cli\u003eAlways disconnect main power before inserting or removing the module from the rack to prevent electrical arcing or damage to the backplane connectors.\u003c\/li\u003e\n\u003cli\u003eVerify that the AC input voltage selector switch (if applicable) matches your local power source before applying power.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the module to allow for proper airflow and cooling, as the unit dissipates heat during operation.\u003c\/li\u003e\n\u003cli\u003eUse shielded cables for I\/O connections to minimize EMI interference, and ensure the chassis is properly grounded to a common earth point.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary function of the 1746-P1?\u003c\/h3\u003e\u003cp\u003eThe 1746-P1 acts as the main power source for the SLC 500 rack, converting incoming AC line voltage into the regulated DC voltages required by the processor and I\/O modules.\u003c\/p\u003e\u003ch3\u003eCan this module provide power to external sensors?\u003c\/h3\u003e\u003cp\u003eYes, the module provides a 24 VDC user power output with a capacity of 200 mA, which can be used to power compatible field devices or sensors.\u003c\/p\u003e\u003ch3\u003eWhat should I do if the power supply fails?\u003c\/h3\u003e\u003cp\u003eFirst, check the input voltage and the status of the external fuse. If the module remains unresponsive, it may require replacement. Always ensure the replacement unit is a genuine Allen-Bradley 1746-P1 to maintain system integrity.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50647303061756,"sku":"1746-P1","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_8e5ea5fb-902d-4386-9503-f8c9181081df.jpg?v=1785056758","url":"https:\/\/www.electronicplc.com\/ar\/products\/allen-bradley-1746-p1-standard-ac-power-supply","provider":"Electronic PLC","version":"1.0","type":"link"}