{"product_id":"1756-pb72-allen-bradley-controllogix-24vdc-standard-power-supply-unit","title":"1756-PB72 Allen-Bradley ControlLogix 24VDC Standard Power Supply Unit","description":"\u003ch3\u003ePower Architecture \u0026amp; System Integration\u003c\/h3\u003e\n\u003cp\u003eDesigned by Rockwell Automation, the \u003cspan style=\"color: #0056b3; font-weight: bold;\"\u003e1756-PB72\u003c\/span\u003e is a high-performance standard DC power supply engineered for the \u003cspan style=\"color: #0056b3; font-weight: bold;\"\u003eControlLogix\u003c\/span\u003e ecosystem. It accepts a nominal 24V DC input (18-32V DC range) and mounts directly onto the leftmost dedicated power slot of 1756 Series A, B, and C chassis without consuming standard I\/O module slots.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications \u0026amp; Electrical Parameters\u003c\/h3\u003e\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\u003eModel \/ Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3; font-weight: bold;\"\u003e1756-PB72\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1756-controllogix\"\u003e\u003cspan style=\"color: #0056b3; font-weight: bold;\"\u003eControlLogix\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard DC Power Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24V DC Nominal (18-32V DC Range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Output Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 Watts at 60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Ratings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10A @ 5.1V DC \/ 2.8A @ 24V DC \/ 4A @ 3.3V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250V Continuous (Reinforced, 3500V DC Type Tested)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHold-Up Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 ms at 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDiagnostic Indicators \u0026amp; Environmental Resilience\u003c\/h3\u003e\n\u003cp\u003eA single status LED indicator located at the upper right section of the module reports real-time power health. The unit features built-in overcurrent protection, 30A maximum inrush limitation, and robust surge transient immunity. Its heavy-duty enclosure withstands 30G operating shock and 2G operational vibrations within industrial environments.\u003c\/p\u003e\n\u003ch3\u003eGlobal PLC Spare HUB Insight \u0026amp; Field Best Practices\u003c\/h3\u003e\n\u003cp\u003eGlobal PLC Spare HUB technical specialists advise ensuring that the chassis backplane ground terminal and the power supply earth screw are tied directly to a low-impedance mounting plate ground. Skipping this step can compromise the reinforced insulation protection against high-frequency industrial noise and EFT\/B surges.\u003c\/p\u003e\n\u003ch3\u003eTarget Equipment \u0026amp; Deployment Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3; font-weight: bold;\"\u003e1756-PB72\u003c\/span\u003e powers expansive rack-mounted architectures in heavy industrial sectors. Ideal applications include large-scale manufacturing automation systems, power generation control racks, continuous petrochemical processing units, and high-density distributed control nodes.\u003c\/p\u003e\n\u003ch3\u003eLogistics, Shipping \u0026amp; Warranty Protection\u003c\/h3\u003e\n\u003cp\u003eAll units ship swiftly within 24 to 48 hours worldwide. Trusted logistics carriers include FedEx, UPS, and DHL. Every \u003cspan style=\"color: #0056b3; font-weight: bold;\"\u003e1756-PB72\u003c\/span\u003e power supply comes fully backed by our comprehensive 12-month operational warranty.\u003c\/p\u003e\n\u003ch3\u003eSelection Guide \u0026amp; Compatibility Checklist\u003c\/h3\u003e\n\u003cp\u003eVerify that your incoming source voltage matches the 18-32V DC operational window. Confirm that your backplane current load calculations across the 1.2V, 3.3V, 5.1V, and 24V rails do not exceed the 75W total output threshold at your maximum cabinet operating temperature.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the \u003cspan style=\"color: #0056b3; font-weight: bold;\"\u003e1756-PB72\u003c\/span\u003e take up a standard I\/O slot in the ControlLogix chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, it installs into the dedicated power supply slot located on the far left side of the 1756 chassis.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required when wiring the DC input terminals?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Pop out the front cover door to access clearly marked DC+ and DC- terminals, and ensure proper protective earth wiring is secured.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does ambient temperature affect the current capacity of this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Current output capabilities derate slightly at higher temperatures; for instance, the 5.1V rail delivers 8A at 50 °C and 6A at 60 °C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this power supply be deployed in residential electrical environments?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, it is designed strictly for industrial locations and may not provide adequate radio communication protection in residential zones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the purpose of the reinforced insulation testing specification?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: It guarantees that the power input circuitry is safely isolated from the backplane up to 3500V DC for 60 seconds.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013810413750,"sku":"1756-PB72","price":158.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1756-PB72-3.jpg?v=1788938900","url":"https:\/\/www.plcsparehub.com\/products\/1756-pb72-allen-bradley-controllogix-24vdc-standard-power-supply-unit","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}