{"title":"Taco Switching Relays","description":"","products":[{"product_id":"switching-relay-1-zone-w-fused-outputs","title":"SR501-5 - 1 Zone Switching Relay with Fused Outputs","description":"\u003cp\u003e\u003cstrong\u003eTaco SR501-5 - 1 Zone Switching Relay w\/Fused Outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Taco SR501-5 is a next-generation single-zone switching relay designed to control circulators in hydronic heating systems. Built for fast installs and easy troubleshooting, it features clearly labeled wiring, external diagnostic lights, and a compact enclosure. Ideal for residential and light commercial applications, this relay provides reliable zone control while integrating seamlessly with a wide range of thermostats and boilers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Taco Comfort Solutions\u003c\/li\u003e\n\u003cli\u003ePart Number: SR501-5\u003c\/li\u003e\n\u003cli\u003eApplication: Single-zone switching relay for hydronic heating systems\u003c\/li\u003e\n\u003cli\u003eVoltage: 120V power input with 24V thermostat compatibility\u003c\/li\u003e\n\u003cli\u003eCompatible with conventional, programmable, and WiFi thermostats\u003c\/li\u003e\n\u003cli\u003eControls circulators or zone valves in heating systems\u003c\/li\u003e\n\u003cli\u003eExternal diagnostic indicator lights for quick system status and troubleshooting\u003c\/li\u003e\n\u003cli\u003eBuilt-in priority protection and isolated end switch for boiler activation\u003c\/li\u003e\n\u003cli\u003eFuse protected with sealed relay for long-term durability\u003c\/li\u003e\n\u003cli\u003eContractor-friendly PC board layout for simplified wiring and installation\u003c\/li\u003e\n\u003cli\u003eCompact design suitable for residential or light commercial applications\u003c\/li\u003e\n\u003cli\u003eUL listed for safety and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHot Water Heating Systems\u003c\/li\u003e\n\u003cli\u003eClosed Cooling Circuits\u003c\/li\u003e\n\u003cli\u003eAir Conditioning Systems\u003c\/li\u003e\n\u003cli\u003eHydronic Heating \u0026amp; Cooling\u003c\/li\u003e\n\u003cli\u003eWater\/Glycol concentrations up to 50%\u003c\/li\u003e\n\u003cli\u003eSolar \/ Geothermal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003ePKZ1900082\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":32805682413622,"sku":"SR501-5","price":112.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/taco_SR501-5_1_wm.jpg?v=1776230767"},{"product_id":"switching-relay-2-zone-w-priorty","title":"SR502-4 - 2 Zone Switching Relay with Priority","description":"\u003cp\u003e\u003cstrong\u003eTaco SR502-4 - 2 Zone Switching Relay w\/Priority\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Taco Switching Relay is the best choice for all your zoning needs, with advanced timer and boiler functions, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integration is achieved. Additional features include built-in priority protection, premium sealed relays, compact design, fuse protected, isolated end switch and universal thermostat compatibility.\u003c\/p\u003e\n\u003cp\u003eTaco Switching Relays combine clearly labeled PC board layouts with advanced features that allow for total system customization. Whether using basic priority switching or the advanced features of the -EXP controls, the job is made easy. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups. All switching relays are UL listed, are compatible with conventional and programmable thermostats.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFront Diagnostic Lights\u003c\/li\u003e\n\u003cli\u003eSwitchable Priority\u003c\/li\u003e\n\u003cli\u003eBuilt-in Priority Protection\u003c\/li\u003e\n\u003cli\u003eSimplified Wiring\u003c\/li\u003e\n\u003cli\u003ePremium Sealed Relays\u003c\/li\u003e\n\u003cli\u003eCompact Design\u003c\/li\u003e\n\u003cli\u003eFuse Protected\u003c\/li\u003e\n\u003cli\u003e100% Factory Tested\u003c\/li\u003e\n\u003cli\u003eIsolated End Switch\u003c\/li\u003e\n\u003cli\u003eContractor Friendly PC Board Layout\u003c\/li\u003e\n\u003cli\u003eUniversal Thermostat\u003c\/li\u003e\n\u003cli\u003eCompatibility\u003c\/li\u003e\n\u003cli\u003e24 Volt Power Output for hard wired thermostats\u003c\/li\u003e\n\u003cli\u003eField Replaceable Transformer\u003c\/li\u003e\n\u003cli\u003eUL Approved\u003c\/li\u003e\n\u003cli\u003eExtended 3 Year Warranty\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003csup\u003e\u003cspan style=\"color: #999999;\"\u003ePKZ1900085\u003c\/span\u003e\u003c\/sup\u003e\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":32805682446390,"sku":"SR502-4","price":226.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/files\/3a3b2556-1224-4486-8211-acda81022000.jpg?v=1739318376"},{"product_id":"switching-relay-4-zone-w-priority-fused-output","title":"SR504-4 - 4 Zone Switching Relay with Priority","description":"\u003cp\u003eSWITCHING RELAY 4-ZONE W\/PRIORITY FUSED OUTPUT\u003c\/p\u003e\n\u003cp\u003eThe Taco Switching Relay is the best choice for all your zoning needs, with advanced timer and boiler functions, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00® family of circulators and thermostats, total system integration is achieved. Additional features include built-in priority protection, premium sealed relays, compact design, fuse protected, isolated end switch and universal thermostat compatibility.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"text-align: right;\"\u003e\u003cspan style=\"color: #999999;\"\u003ePKZ1900095\u003c\/span\u003e\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":32805682544694,"sku":"SR504-4","price":303.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/6150\/2518\/products\/taco_sr504-4.jpg?v=1664180989"},{"product_id":"switching-relay-w-priority6-z0ne","title":"SR506-4 - 6 Zone Switching Relay with Priority","description":"\u003cp\u003eSWITCHING RELAY W\/PRIORITY6-Z0NE\u003c\/p\u003e\n\u003cp\u003eThe Taco Switching Relay is the best choice for all your zoning needs, with advanced timer and boiler functions, external diagnostic lights, switchable priority and contractor friendly PC board layouts. 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