{"product_id":"a-o-smith-731a-three-phase-induction-electric-motor","title":"A. O. Smith 731A Three-Phase Induction Electric Motor","description":"\u003cdiv\u003e\u003cp\u003eThe Century\/A.O. Smith 731A is a compact 1\/4 HP electric motor designed for HVAC blower duties, delivering 115\/208-240V operation and 1140 RPM on a 5-5\/8-inch frame with a Totally Enclosed Fan-Cooled (TEFC) enclosure. This voltage range and speed make it a versatile replacement for Century equipment and many aftermarket installations, commonly used in unit heaters, air handlers, and blower assemblies where reliable, modest-torque airflow is required. The model number 731A identifies a widely cataloged Century\/A.O. Smith motor, and distributors consistently list it as 1\/4 HP, 115\/208-240V, 1140 RPM, with a 5-5\/8\" TEFC frame. TEFC construction provides protection against dust and moisture in HVAC environments, helping maintain performance in typical installation conditions. As a replacement option, it appears across multiple retailers and OEM catalogs, supporting legacy Century systems and compatible aftermarket builds.\u003c\/p\u003e\u003c\/div\u003e","brand":"AO","offers":[{"title":"New","offer_id":51660024283438,"sku":null,"price":1740.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_43b37c2d-aec5-44d7-95b0-9f773cadc552.jpg?v=1769531917","url":"https:\/\/plgautomation.com\/products\/a-o-smith-731a-three-phase-induction-electric-motor","provider":"PLG Automation ","version":"1.0","type":"link"}