{"product_id":"allen-bradley-1771-p4r-industrial-power-supply","title":"Allen-Bradley 1771-P4R Industrial Power Supply","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1771-P4R is a redundant power supply module for Allen-Bradley 1771 I\/O racks used in PLC-5 and SLC 500 automation systems. As a redundant (R) unit, it is designed to operate alongside a second power supply to provide dual, fault-tolerant DC power to the 1771 backplane, helping keep critical I\/O operational in the event of a single-supply failure. It installs in the standard 1771 I\/O chassis and shares the same backplane interface with other 1771 power components, ensuring compatibility within existing 1771-based configurations. Common applications include manufacturing lines, packaging, and process-control cabinets where uninterrupted power to I\/O modules and the processor is essential. The P4R is part of Allen-Bradley’s PLC-5\/SLC 500 power-supply ecosystem and is typically used in dual-redundant setups alongside related models such as the 1771-P6R. For proper installation and long-term reliability, follow the manufacturer’s recommendations for 1771 power-supply pairing and chassis wiring in industrial automation environments.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46244019306730,"sku":null,"price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-079.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/allen-bradley-1771-p4r-industrial-power-supply","provider":"GTG Hardware","version":"1.0","type":"link"}