{"product_id":"allen-bradley-1791-24ar-block-i-o-module-24-ac-inputs","title":"Allen-Bradley 1791-24AR Block I\/O Module | 24 AC Inputs","description":"\u003ch2\u003e\u003cstrong\u003eAllen-Bradley 1791-24AR Block I\/O Module: Versatile Relay-Based I\/O\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Manufacturer:\u003c\/strong\u003e Allen-Bradley\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e \u003cstrong\u003e1791-24AR\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Line:\u003c\/strong\u003e 1791 Block I\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiscrete Input Channels:\u003c\/strong\u003e 24 channels (3 groups of 8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage Rating:\u003c\/strong\u003e 120V AC Nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn-State Input Range:\u003c\/strong\u003e 79 to 132V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Channels:\u003c\/strong\u003e 8 Electromechanical Relay Outputs (Normally Open)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral Output Rating:\u003c\/strong\u003e 1A maximum resistive current\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Power Supply:\u003c\/strong\u003e 85 to 132V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Dimensions:\u003c\/strong\u003e 3.85 x 4.35 x 6.95 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 2.50 lbs (1.13 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eOutput Load Specifications \u0026amp; Flexibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Feature:\u003c\/strong\u003e Relay outputs support both \u003cspan style=\"color: #e74c3c;\"\u003eAC and DC load types\u003c\/span\u003e for maximum application flexibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistive Load (AC):\u003c\/strong\u003e 20-132V AC at 1A max.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistive Load (DC):\u003c\/strong\u003e 20-30V DC at 1A max, or up to 125V DC at 0.2A max.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInductive Load (AC):\u003c\/strong\u003e 20-132V AC at 0.5A (cos φ = 0.4).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInductive Load (DC):\u003c\/strong\u003e 20-30V DC at 1A (L\/R = 7 ms).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteady DC Load:\u003c\/strong\u003e 125V DC at 0.1A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Integration Details\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Designed for easy vertical or horizontal mounting on a panel or DIN rail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Compatibility:\u003c\/strong\u003e Integrates with Allen-Bradley PLC systems using the built-in Remote I\/O (RIO) interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e All I\/O and power connections are made to the module's integrated terminal blocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e Requires a single 120V AC power source within the 85-132V AC range for module operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ - Frequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat makes the \u003cstrong\u003e1791-24AR\u003c\/strong\u003e different from other 1791 modules?\u003c\/strong\u003e It uniquely combines 24 AC inputs with 8 general-purpose relay outputs that can switch AC or DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan I use the relay outputs to control DC solenoids?\u003c\/strong\u003e Yes, the relays are suitable for DC inductive loads like solenoids, following the specified DC current ratings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the nominal input current?\u003c\/strong\u003e The typical input current is 11 mA at 120V AC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre the relay outputs isolated?\u003c\/strong\u003e The electromechanical relays provide physical isolation between the control circuit and the load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e© 2025 Ubest Automation Limited. \u003ca href=\"https:\/\/www.ubestplc.com\/\"\u003ehttps:\/\/www.ubestplc.com\/\u003c\/a\u003e All rights reserved.\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eContact:\u003c\/strong\u003e Email: \u003ca href=\"mailto:sales@ubestplc.com\"\u003esales@ubestplc.com\u003c\/a\u003e Phone: \u003ca href=\"https:\/\/wa.me\/8618030005825\"\u003e+86 180 3000 5825\u003c\/a\u003e\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":51506165154074,"sku":"1791-24AR","price":214.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/6240\/4634\/files\/1791-24AR-1.jpg?v=1767059513","url":"https:\/\/www.ubestplc.com\/products\/allen-bradley-1791-24ar-block-i-o-module-24-ac-inputs","provider":"Ubest Automation Limited","version":"1.0","type":"link"}