{"product_id":"heat-controller-mars-50321-control-transformer-75va","title":"Heat Controller MARS-50321 Control Transformer 75VA","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HEAT CONTROLLER MARS-50321 is a multi-tap primary control transformer rated at 75 VA, designed to step down line voltage to a 24-volt secondary for low-voltage control circuits. It accepts primary voltages of 120, 208, 240, or 480 volts, making it adaptable across a wide range of commercial and residential electrical supply configurations. The transformer features a manual reset, foot-mount design, and UL Class 2 recognition. Color-coded leads or quick-connect terminals simplify wiring during installation. Licensed HVAC technicians and refrigeration mechanics install this part as a power source for control circuit boards in air conditioning, heating, and refrigeration systems.\u003c\/p\u003e\n\u003cp\u003eThe MARS-50321 is suited for applications where a reliable 24-volt control power source is required. Its multi-tap primary accommodates 120, 208, 240, and 480-volt supplies, covering single-phase residential systems through light commercial equipment. The foot-mount configuration allows secure panel or chassis mounting. The manual reset provides a means to restore the transformer after an overload condition without replacing the unit, which is useful in systems prone to control circuit faults during commissioning or maintenance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMulti-tap primary: 120, 208, 240, and 480 volts for broad system compatibility\u003c\/li\u003e\n  \u003cli\u003e24-volt secondary output for standard low-voltage control circuits\u003c\/li\u003e\n  \u003cli\u003e75 VA rating supports typical HVAC and refrigeration control loads\u003c\/li\u003e\n  \u003cli\u003eManual reset allows restoration after overload without part replacement\u003c\/li\u003e\n  \u003cli\u003eUL Class 2 recognized construction with low heat rise design\u003c\/li\u003e\n  \u003cli\u003eFoot-mount base for secure chassis or panel installation\u003c\/li\u003e\n  \u003cli\u003eColor-coded leads or quick-connect terminals for simplified field wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or upgrade transformer for air conditioning, heating, and refrigeration control circuits requiring a 24-volt secondary and a multi-tap 120 to 480-volt primary supply.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician or qualified electrician. Disconnect and lock out all primary power before handling or wiring the transformer. Verify that the correct primary tap is selected to match the supply voltage before energizing. Wiring must comply with the National Electrical Code (NEC) and any applicable local codes for low-voltage control circuit installations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVA Rating\u003c\/strong\u003e: 75 VA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Voltage\u003c\/strong\u003e: 120 \/ 208 \/ 240 \/ 480 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Voltage\u003c\/strong\u003e: 24 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Foot Mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReset Type\u003c\/strong\u003e: Manual Reset\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification\u003c\/strong\u003e: UL Class 2 Recognized\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HEAT CONTROLLER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: MARS-50321\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HEAT CONTROLLER","offers":[{"title":"Default Title","offer_id":51383696884018,"sku":"MARS-50321","price":96.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312670435.jpg?v=1782604734","url":"https:\/\/voomisupply.com\/products\/heat-controller-mars-50321-control-transformer-75va","provider":"Voomi Supply","version":"1.0","type":"link"}