{"product_id":"allen-bradley-1769-pa4-compact-io-expansion-power-supply","title":"Allen-Bradley 1769-PA4 Compact IO Expansion Power Supply","description":"\u003cdiv\u003eThe Allen-Bradley 1769-PA4 Compact I\/O Expansion Power Supply provides dual rails to power 1769 Compact I\/O modules from a single AC source. It delivers 5 VDC at up to 4 A and 24 VDC at up to 2 A, enabling both logic circuitry and field devices to be powered from the same supply within a CompactLogix rack. The unit accepts a selectable 120\/240 VAC input, catering to different regional power standards, and is documented to support up to 16 I\/O modules across the rack (eight modules on each side of the supply). The 1769-PA4 (and the PA4K variant) is part of Rockwell Automation’s Compact I\/O power-supply family and is specified in official technical data as providing 4 A at 5 VDC and 2 A at 24 VDC. With its dual-rail configuration, it can support a mix of digital, analog, and specialty expansion modules typical of 1769 Compact I\/O systems, making it suitable for compact automation cabinets or retrofit projects where space and centralized power delivery are essential. The product is commonly selected for legacy 1769-based installations and newer systems that still rely on the 1769 Compact I\/O ecosystem, offering a compact, single-unit solution to backplane power needs for backplane-connected I\/O modules.\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"New","offer_id":46279523762410,"sku":null,"price":161.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-077.png?v=1788727428","url":"https:\/\/gtghardware.com\/products\/allen-bradley-1769-pa4-compact-io-expansion-power-supply","provider":"GTG Hardware","version":"1.0","type":"link"}