{"product_id":"tjernlund-products-950-1040","title":"Tjernlund Products 950-1040 Relay","description":"\u003cp\u003eThe \u003cstrong\u003eTjernlund 950-1040 Relay\u003c\/strong\u003e is a specialized \u003cstrong\u003e24VAC VAC relay\u003c\/strong\u003e designed for demanding HVACR control circuits. As a field-proven \u003cstrong\u003epower venter relay kit\u003c\/strong\u003e, this component is essential for technicians servicing \u003cstrong\u003eTjernlund HSUL\u003c\/strong\u003e series, HS-3, HS-4, and GPAK units. It facilitates critical interlocking between the appliance and draft inducer, ensuring the \u003cstrong\u003e24V control circuit\u003c\/strong\u003e can effectively trigger 115V motorized loads. When used as a \u003cstrong\u003ereplacement relay\u003c\/strong\u003e or an accessory for \u003cstrong\u003eMAC-3 controllers\u003c\/strong\u003e and IN-FORCER combustion air intakes, it provides stable switching performance. Contractors should note that terminals 7 and 8 are exclusively for 24VAC input; applying 115VAC to these terminals will result in immediate component failure. This \u003cstrong\u003eOEM replacement part\u003c\/strong\u003e includes wire leads and mounting hardware, serving as a direct drop-in for worn-out switching interfaces in \u003cstrong\u003eside wall vent systems\u003c\/strong\u003e and draft induction setups.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Engineered for seamless integration with \u003cstrong\u003eTjernlund HSUL-J\u003c\/strong\u003e, HS-1, and HS-2 power venters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Voltage Support:\u003c\/strong\u003e Specifically designed to bridge 24VAC control signals with 115V equipment operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Construction:\u003c\/strong\u003e Built as a high-performance \u003cstrong\u003eHVAC induction relay\u003c\/strong\u003e to withstand the rapid cycling of modern mechanical draft systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Includes a factory-standard mounting kit and wire leads for professional-grade panel wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions:\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this relay for 115VAC control signals?\u003c\/strong\u003e\u003cbr\u003e\nNo. This relay is specifically rated for 24VAC on the coil terminals (7 and 8). Introducing line voltage to the control side will damage the unit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhich venter models does the 950-1040 support?\u003c\/strong\u003e\u003cbr\u003e\nIt is the standard replacement for most \u003cstrong\u003eTjernlund power venter\u003c\/strong\u003e models, including the HSUL and GPAK-J series, as well as the MAC-3 and MAC-4 series controllers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this a suitable replacement for a post-purge timer?\u003c\/strong\u003e\u003cbr\u003e\nThis is a standard relay. If your system requires a fixed or adjustable post-purge delay, you should verify if your control board handles the timing or if a dedicated relay-timer kit like the 950-1067 is required.\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":"Tjernlund Products","offers":[{"title":"Default Title","offer_id":43465311355058,"sku":"950-1040","price":84.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_175ab292-7a4c-4d77-923f-bd58cdbd07fc.png?v=1701803906","url":"https:\/\/www.gsistore.com\/en-ca\/products\/tjernlund-products-950-1040","provider":"GSIstore","version":"1.0","type":"link"}