{"product_id":"trane-rly1678-relay","title":"Trane RLY1678 Relay","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong\u003eTrane RLY1678 Current Sensing Relay\u003c\/strong\u003e is an OEM electrical control used in compatible Trane HVAC equipment to monitor current flow and provide a switching signal when the monitored load reaches the relay’s operating threshold. The RLY1678 is identified as a \u003cstrong\u003e2\/135A current sensing relay\u003c\/strong\u003e, with a sensing range extending up to 135 amps.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003eHVAC current sensing relay\u003c\/strong\u003e can be used in control applications where the system needs to detect current draw from motors, compressors, fans, or other electrical loads. The relay monitors current through the conductor and provides the appropriate control response.\u003c\/p\u003e\n\u003cp\u003eWhen replacing a current sensing relay, do not select a replacement based on amperage rating alone. Verify the Trane equipment model and serial number, original relay number, sensing range, conductor arrangement, control requirements, mounting configuration, and associated wiring before installation.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Trane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RLY1678\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Current Sensing Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 2\/135A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensing Range:\u003c\/strong\u003e Up to 135A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Solid-Core Current Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e RLY01678\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross Reference:\u003c\/strong\u003e X13310270-01\u003c\/li\u003e\n\u003cli\u003eDesigned for compatible Trane HVAC control applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the Trane RLY1678 do?\u003c\/strong\u003e\u003cbr\u003eThe RLY1678 is a \u003cstrong\u003ecurrent sensing relay\u003c\/strong\u003e that monitors electrical current through a conductor and provides a relay response for compatible HVAC control circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the current rating of RLY1678?\u003c\/strong\u003e\u003cbr\u003eThe Trane RLY1678 is identified as a \u003cstrong\u003e2\/135A current sensing relay\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat replaces Trane RLY1678?\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003eTrane RLY01678\u003c\/strong\u003e is identified as the current replacement for RLY1678.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes RLY1678 cross-reference to X13310270-01?\u003c\/strong\u003e\u003cbr\u003eYes. \u003cstrong\u003eX13310270-01\u003c\/strong\u003e is associated with the RLY1678 replacement application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I substitute another 135A current sensing relay?\u003c\/strong\u003e\u003cbr\u003eDo not substitute based only on maximum amperage. Verify the sensing range, control requirements, mounting style, conductor configuration, wiring, and exact Trane equipment compatibility before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I verify compatibility?\u003c\/strong\u003e\u003cbr\u003eConfirm the \u003cstrong\u003eRLY1678 \/ RLY01678\u003c\/strong\u003e part number against the complete Trane equipment model and serial number or applicable factory parts breakdown before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRLY1678 is the cross for X1331027001\u003c\/span\u003e\u003c\/p\u003e","brand":"Trane","offers":[{"title":"Default Title","offer_id":47925392769202,"sku":"RLY1678","price":226.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Image_89733918-4866-4bb7-af1d-7c89e0d5d3f9.png?v=1787256809","url":"https:\/\/www.gsistore.com\/products\/trane-rly1678-relay","provider":"GSIstore","version":"1.0","type":"link"}