{"product_id":"1756-pb50-allen-bradley-controllogix-standard-dc-power-supply-module","title":"1756-PB50 | Allen-Bradley | ControlLogix Standard DC Power Supply Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-PB50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-capacity DC power supply specifically engineered for the Allen-Bradley ControlLogix platform. It converts a nominal 24V DC input into the multiple backplane voltages required by processors, I\/O modules, and communication adapters within a 1756 chassis. This module provides the necessary current for high-density configurations, ensuring stable logic-side performance across the entire backplane. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and factory-original\u003c\/strong\u003e, guaranteeing peak electrical efficiency and system integrity.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 1756-PB50 utilizes a robust switching architecture to maintain stable outputs even during input voltage fluctuations.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\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 (Nominal)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Voltage Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e18–32V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current Capacity (5.1V)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8A @ 50 °C \/ 6A @ 60 °C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current Capacity (24V)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.5A @ 50 °C \/ 2.0A @ 60 °C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Inrush Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e250V Continuous\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHold Up Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30ms @ 60W \/ 40ms @ 50W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eChassis Location\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLeft Side (Dedicated Slot)\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\u003e1.81 lbs (0.82 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRide-Through Capability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe integrated capacitors provide a hold-up time of up to 40ms. This prevents nuisance controller resets during momentary DC bus brownouts or power transitions, maintaining process uptime in volatile power environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Current Delivery:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module delivers a substantial 8A at the 5.1V backplane rail. This high output supports fully populated 17-slot chassis containing multiple high-drain communication modules and processors without requiring a secondary power source.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Resiliency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-PB50 features advanced heat dissipation components. It operates at full capacity in ambient temperatures up to 50 °C and supports derated operation up to 60 °C, making it suitable for unconditioned industrial enclosures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Chassis Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe unit snaps directly into the dedicated power supply slot on the left side of any standard 1756 ControlLogix chassis. This design eliminates external wiring for logic power and ensures a low-impedance connection to the backplane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 1756-PB50 in a redundant power supply configuration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 1756-PB50 is a standard power supply. For redundant applications, you must use the 1756-PB75R or 1756-PSCA2 adapter system. This module is intended for standalone chassis power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of fuse or circuit protection do you recommend for the input?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTo protect against the 30A inrush current and potential short circuits, install a fast-acting fuse or a high-magnetic trip circuit breaker rated appropriately for the 24V DC supply line.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module provide power for field-side devices?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 1756-PB50 only provides power to the chassis backplane for internal module logic. You must provide a separate 24V DC source to power field-side actuators, sensors, and I\/O terminal blocks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I verify if the power supply is functioning correctly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe front panel includes a green \"DC Power\" LED. If the LED is off, check the 24V DC input terminals for voltage and ensure the module is fully seated in the chassis.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52846773666101,"sku":"1756-PB50","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1756-PBXT_4ce85441-04d2-469a-a8c3-e580113cefd0.jpg?v=1778208586","url":"https:\/\/www.5gplc.com\/products\/1756-pb50-allen-bradley-controllogix-standard-dc-power-supply-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}