{"product_id":"liebert-r13-0090s","title":"Liebert R13-0090S Limit switch","description":"\u003cp\u003eThe \u003cstrong\u003eLiebert R13-0090S Limit Switch\u003c\/strong\u003e is a critical safety component engineered for precision cooling systems and data center environmental controls. This \u003cstrong\u003eOEM replacement part\u003c\/strong\u003e functions as a high-limit safety, monitoring discharge or supply air temperatures to prevent system overheating. With a specific \u003cstrong\u003e118-120F operating range\u003c\/strong\u003e, this switch provides an \u003cstrong\u003eautomatic reset\u003c\/strong\u003e (AUTO) function, ensuring that the circuit closes or opens once temperatures normalize within the calibrated threshold.\u003c\/p\u003e\n\n\u003cp\u003eDesigned for mission-critical HVACR applications, the \u003cstrong\u003eLiebert R13-0090S\u003c\/strong\u003e is essential for maintaining strict thermal parameters in Vertiv\/Liebert units. As a veteran technician knows, using the correct \u003cstrong\u003etemperature-actuated switch\u003c\/strong\u003e is vital for protecting the heat exchanger and sensitive electronic components from thermal stress. This \u003cstrong\u003eL120-2 automatic limit\u003c\/strong\u003e ensures seamless integration with existing control logic, offering reliable performance without the need for manual intervention after a temporary temperature excursion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Thermal Calibration:\u003c\/strong\u003e Factory-set for \u003cstrong\u003e118-120F\u003c\/strong\u003e operation to ensure accurate protection in high-stakes cooling environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Functionality:\u003c\/strong\u003e Eliminates the need for manual resets, reducing site visits and downtime for \u003cstrong\u003edata center HVAC\u003c\/strong\u003e maintenance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Compatibility:\u003c\/strong\u003e Specifically engineered for \u003cstrong\u003eLiebert precision cooling\u003c\/strong\u003e units, ensuring matches for electrical ratings and physical mounting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Reliability Construction:\u003c\/strong\u003e Built to withstand the high-cycle demands of industrial-grade \u003cstrong\u003eenvironmental control systems\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat causes a limit switch like the R13-0090S to trip frequently?\u003c\/strong\u003e\u003cbr\u003e Frequent tripping is typically a symptom of restricted airflow, often caused by clogged filters, a failing blower motor, or obstructed return air paths in the \u003cstrong\u003eLiebert unit\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I substitute this with a manual reset limit switch?\u003c\/strong\u003e\u003cbr\u003e It is not recommended. The \u003cstrong\u003eR13-0090S\u003c\/strong\u003e is an \u003cstrong\u003eautomatic limit switch\u003c\/strong\u003e; substituting it with a manual version changes the system's safety sequence and could cause unnecessary system lockouts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I verify the operation of this switch during a service call?\u003c\/strong\u003e\u003cbr\u003e Use a multimeter to check for continuity across the terminals. At room temperature, the switch should typically be closed, opening only when the \u003cstrong\u003e120F threshold\u003c\/strong\u003e is reached.\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: 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","brand":"Liebert","offers":[{"title":"Default Title","offer_id":44970360701106,"sku":"R13-0090S","price":176.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_2a1f200a-4d0e-4416-9c7c-e8754bfb2bdf.png?v=1747955398","url":"https:\/\/www.gsistore.com\/products\/liebert-r13-0090s","provider":"GSIstore","version":"1.0","type":"link"}