{"product_id":"allen-bradley-817-a-thermistor-relay","title":"Allen-Bradley 817-A Thermistor Relay","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 817-A Thermistor Relay is a Bulletin 817 thermistor protection relay designed to guard electric motors against winding overheating by responding to external PTC thermistors connected to the motor windings. This is the basic model in Rockwell Automation’s 817 family (817-A⊗), with the related 817-M⊗ offering manual\/remote reset and test functionality plus a power-indication LED, and the 817-U⊗ variant representing a voltage-suffix option for configuration. Rockwell's product selection notes that the 817-A⊗, 817-M⊗, and 817-U⊗ come in multiple voltage configurations, with suffix codes aligned to common control voltages (for example 24V, 48V, 110V, 220V, 240V, 380V, and 415V). The 817 family is documented as thermistor protection relays used in motor protection schemes, specifically designed to work with PTC thermistor networks to detect overheating and trigger protective action in the control circuit. These relays are designed to be integrated into industrial motor circuits to provide reliable protection against thermal faults in windings, helping prevent motor damage and unplanned downtime. \u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51657436660014,"sku":null,"price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_6f179287-797d-4528-980e-430099b51800.jpg?v=1769468954","url":"https:\/\/plgautomation.com\/products\/allen-bradley-817-a-thermistor-relay","provider":"PLG Automation ","version":"1.0","type":"link"}