{"product_id":"swimables-sw-41-063-mastertemp-r-max-e-therm-r-style-high-limit-switch","title":"Swimables | SW-41-063 | MasterTemp \/ Max‑E‑Therm Style High Limit Switch – Essential Heater Safety Component","description":"\u003cp data-start=\"61\" data-end=\"122\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eSwimables SW‑41‑063 high limit switch for Pentair MasterTemp and Sta‑Rite Max‑E‑Therm heaters. Detects high water temperature (\u0026gt;135 °F), shuts off gas for safety, compatible OEM replacement (42001‑0063S).\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"124\" data-end=\"127\"\u003e\n\u003cp data-start=\"129\" data-end=\"148\"\u003e\u003cstrong data-start=\"129\" data-end=\"146\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"149\" data-end=\"552\"\u003e\n\u003cli data-start=\"149\" data-end=\"228\"\u003e\n\u003cp data-start=\"151\" data-end=\"228\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-start=\"0\" data-end=\"30\" data-is-only-node=\"\"\u003eOEM‑equivalent replacement\u003c\/strong\u003e: Replaces Pentair\/Sta‑Rite part #42001‑0063S (also known as STA‑151‑6255), compatible with MasterTemp and Max‑E‑Therm models SR200, SR333, SR400\u003c\/span\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"229\" data-end=\"308\"\u003e\n\u003cp data-start=\"231\" data-end=\"308\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-start=\"0\" data-end=\"27\" data-is-only-node=\"\"\u003eHigh‑temperature cutoff\u003c\/strong\u003e: Designed to trip at approximately 135 °F to immediately shut off gas flow when water temperature exceeds safe limits\u003c\/span\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"309\" data-end=\"388\"\u003e\n\u003cp data-start=\"311\" data-end=\"388\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-start=\"0\" data-end=\"28\" data-is-only-node=\"\"\u003eSafety‑critical function\u003c\/strong\u003e: Prevents heat exchanger damage and system faults by responding to “HLS” error code on the heater control board\u003c\/span\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"389\" data-end=\"468\"\u003e\n\u003cp data-start=\"391\" data-end=\"468\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-start=\"0\" data-end=\"24\" data-is-only-node=\"\"\u003eDurable construction\u003c\/strong\u003e: Brass housing and dual spade terminals ensure rugged use and secure electrical connection\u003c\/span\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"469\" data-end=\"552\"\u003e\n\u003cp data-start=\"471\" data-end=\"552\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-start=\"0\" data-end=\"21\" data-is-only-node=\"\"\u003eEasy installation\u003c\/strong\u003e: Compact inline switch with two spade connectors fits directly on manifold—no wiring harness required\u003c\/span\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"554\" data-end=\"557\"\u003e\n\u003cp data-start=\"559\" data-end=\"663\"\u003e\u003cstrong data-start=\"559\" data-end=\"580\"\u003eProduct Overview:\u003c\/strong\u003e\u003cbr data-start=\"580\" data-end=\"583\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eThe Swimables SW‑41‑063 High Limit Switch is a direct-fit, high-quality replacement for the Pentair\/Sta‑Rite OEM part #42001‑0063S. Installed in the outlet of MasterTemp and Max‑E‑Therm heaters (models SR200, SR333, SR400), this switch serves as a crucial safety device. It continually monitors water temperature, and if the system exceeds approximately 135 °F, the switch immediately opens the gas circuit—triggering an “HLS” fault and shutting down the heater to prevent overheating and protect the heat exchanger.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"665\" data-end=\"866\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eHoused in durable brass with dual spade terminals, the SW‑41‑063 is built for long-term reliability. It’s a one-time-use safety device—once tripped it must be replaced to restore protection.\u003c\/span\u003e This compact unit mounts easily onto the manifold, and its simplicity ensures faster service calls and reduced downtime.\u003c\/p\u003e\n\u003cp data-start=\"868\" data-end=\"1195\"\u003eIdeal for pool technicians and knowledgeable homeowners, installing the SW‑41‑063 reinstates critical safety functions and allows the heater to resume normal operation. It’s recommended to replace this switch upon HLS fault indication or during preventive maintenance to ensure continued safe and efficient heating performance.\u003c\/p\u003e","brand":"Swimmables","offers":[{"title":"Default Title","offer_id":49264443588920,"sku":"SW-41-063","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/MainImageSW-41-063.jpg?v=1777919083","url":"https:\/\/appaetechpoolsupply.com\/products\/swimables-sw-41-063-mastertemp-r-max-e-therm-r-style-high-limit-switch","provider":"AppaeTech Pool Supply","version":"1.0","type":"link"}