{"product_id":"allen-bradley-1791-8ar-relay-i-o-module","title":"Allen-Bradley 1791-8AR Relay I\/O Module","description":"\u003ch2\u003e\u003cb\u003eAllen-Bradley 1791-8AR AC Input \u0026amp; Relay Output Module\u003c\/b\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cb\u003eKey Technical Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBrand:\u003c\/b\u003e \u003cspan style=\"color: #2e74b5;\"\u003eAllen‑Bradley\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eModel:\u003c\/b\u003e \u003cspan style=\"color: #2e74b5;\"\u003e\u003cb\u003e1791-8AR\u003c\/b\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProduct Line:\u003c\/b\u003e 1791 Block I\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInput Voltage:\u003c\/b\u003e \u003cspan style=\"color: #2e74b5;\"\u003e120V AC\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNumber of Inputs:\u003c\/b\u003e 8 channels (1 group of 8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInput On‑State Range:\u003c\/b\u003e 79‑132V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInput On‑State Current:\u003c\/b\u003e 12.3 mA maximum at 132V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInput Off‑State Voltage:\u003c\/b\u003e 35V AC maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOutput Type:\u003c\/b\u003e \u003cspan style=\"color: #2e74b5;\"\u003eRelay\u003c\/span\u003e (8 channels)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOutput Ratings:\u003c\/b\u003e 125V DC at 1A resistive max; 20‑30V DC at 1A max; 125V AC at 0.2A max\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eExternal Power:\u003c\/b\u003e 85‑132V AC, 150 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePower Dissipation:\u003c\/b\u003e 12.9 Watts maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThermal Dissipation:\u003c\/b\u003e 56.1 BTU\/hour maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight:\u003c\/b\u003e 1.00 lbs (0.45 kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions (FAQ)\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eQ: What makes this module different from other 1791 modules?\u003c\/b\u003e\u003cbr\u003eA: The \u003cb\u003e1791-8AR\u003c\/b\u003e uniquely combines eight 120VAC inputs with eight relay outputs for switching both AC and DC loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eQ: What controllers are compatible with this module?\u003c\/b\u003e\u003cbr\u003eA: It works with PLC‑2, PLC‑3, PLC‑5, and SLC 500 (with 1747‑SN scanner) controllers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eQ: What types of loads can the relay outputs control?\u003c\/b\u003e\u003cbr\u003eA: The relays can switch resistive and inductive loads including lights, solenoids, and contactor coils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eQ: What is the maximum cable length for the RIO network?\u003c\/b\u003e\u003cbr\u003eA: Up to 10,000 feet at 57.6K baud, with shorter distances at higher baud rates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eQ: What is your shipping and return policy?\u003c\/b\u003e\u003cbr\u003eA: We ship within 5 days via major carriers and offer a 30‑day return policy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003csmall\u003e© 2026 NexAuto Technology Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.nex-auto.com\/\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e\u003cbr\u003ePhone: \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/small\u003e\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":47289532514562,"sku":"1791-8AR","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7280\/6146\/files\/1791-8AR-1.jpg?v=1773891949","url":"https:\/\/www.nex-auto.com\/fa\/products\/allen-bradley-1791-8ar-relay-i-o-module","provider":"NexAuto Technology Limited","version":"1.0","type":"link"}