{"product_id":"supco-upro21-universal-push-on-relay-compressor","title":"Supco UPRO21 Universal Push-on Relay Compressor","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUPCO UPRO21 is a universal push-on relay designed for use in refrigeration and air conditioning compressor circuits. This relay mounts directly onto the compressor start terminal without tools, making field replacement straightforward for HVAC and refrigeration technicians. Constructed with copper contacts, the UPRO21 delivers reliable switching action in start-circuit applications. Its universal design allows it to fit a wide range of hermetic compressors, reducing the need to stock multiple relay part numbers for different equipment. Licensed HVAC technicians and appliance repair technicians are the primary installers of this component.\u003c\/p\u003e\u003cp\u003eThe UPRO21 is used in residential and light commercial refrigeration and air conditioning systems where a push-on style start relay is required. It is a direct replacement relay suited for service calls involving compressor hard-start conditions or failed original equipment relays. Its compact footprint fits into tight compressor compartments common in refrigerators, freezers, window air conditioners, and small split-system units. Technicians working on hermetic compressor equipment will find this relay a practical stock item for service vehicles.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePush-on terminal mount  -  no tools required for installation on compatible compressor start pins\u003c\/li\u003e\n\u003cli\u003eUniversal fit design reduces the need for multiple SKUs in a service inventory\u003c\/li\u003e\n\u003cli\u003eCopper contact construction for reliable electrical switching\u003c\/li\u003e\n\u003cli\u003eCompact dimensions of 4.02 inches x 2.99 inches x 2.01 inches fit tight compressor compartments\u003c\/li\u003e\n\u003cli\u003eGenuine replacement part from Sealed Unit Parts Co Inc\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style universal replacement push-on relay for hermetic compressors found in residential refrigeration and air conditioning equipment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified HVAC or appliance repair technician. Always disconnect and lock out power to the unit before removing or installing the relay. The relay must be oriented correctly on the compressor start terminal per the compressor manufacturer's terminal layout. Verify the replacement relay's electrical ratings are appropriate for the compressor before energizing the system.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Push-On Start Relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Material\u003c\/strong\u003e: Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4.02 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2.99 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 2.01 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SUPCO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: UPRO21\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUPCO","offers":[{"title":"Default Title","offer_id":51976155332914,"sku":"UPRO21","price":19.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7db30490da5bc536dc1e03cf72f05587.jpg?v=1789978566","url":"https:\/\/voomisupply.com\/products\/supco-upro21-universal-push-on-relay-compressor","provider":"Voomi Supply","version":"1.0","type":"link"}