{"product_id":"mars-mars-50354-control-power-transformer-40-va","title":"Mars mars-50354 Control Power Transformer 40 Va","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MARS mars-50354 is a foot-mount, open-construction control power transformer designed for HVAC control circuits. It steps down line voltage from a 120, 208, or 240 volt AC primary to a 24 volt AC secondary at a 40 VA power rating. This multi-tap primary configuration makes it suitable for a wide range of residential and light commercial installations where a single transformer must accommodate different supply voltages. Licensed HVAC technicians and electricians install this type of transformer when replacing failed or undersized control transformers in forced-air systems, heat pumps, and hydronic controls.\u003c\/p\u003e\n\u003cp\u003eThe mars-50354 fits typical HVAC control applications where 24-volt class-2 circuits power thermostats, zone controllers, gas valves, and relay coils. The foot-mount open construction allows direct mounting to a panel or chassis surface inside an air handler, furnace cabinet, or electrical enclosure. Its multi-tap 120\/208\/240 volt primary suits both single-phase residential service and light commercial multi-tap panels. Installation is straightforward for any technician working with low-voltage control wiring on split systems, package units, or hydronic boiler controls.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMulti-tap primary accepts 120, 208, or 240 volts AC to match varied supply voltages\u003c\/li\u003e\n  \u003cli\u003e24 volt AC secondary output for standard HVAC low-voltage control circuits\u003c\/li\u003e\n  \u003cli\u003e40 VA power rating supports thermostats, zone valves, and relay coils simultaneously\u003c\/li\u003e\n  \u003cli\u003eFoot-mount design enables direct fastening to panel or chassis surfaces\u003c\/li\u003e\n  \u003cli\u003eOpen construction provides passive ventilation to manage operating temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement control power transformer for residential and light commercial HVAC systems requiring a 24-volt secondary with a multi-tap 120\/208\/240 volt primary and 40 VA capacity.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician or electrician. Always disconnect and lock out power at the main disconnect before removing or installing a control transformer. Verify that the primary tap wiring matches the measured supply voltage before energizing. Total VA load of all connected 24-volt devices must not exceed the 40 VA rating of the transformer to prevent overheating.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Voltage\u003c\/strong\u003e: 120\/208\/240 volts AC (multi-tap)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Voltage\u003c\/strong\u003e: 24 volts AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Rating\u003c\/strong\u003e: 40 VA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Style\u003c\/strong\u003e: Foot-mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction\u003c\/strong\u003e: Open\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 39122200\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: MARS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: mars-50354\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MARS","offers":[{"title":"Default Title","offer_id":51138636611890,"sku":"MARS-50354","price":35.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305532169.png?v=1778260835","url":"https:\/\/voomisupply.com\/products\/mars-mars-50354-control-power-transformer-40-va","provider":"Voomi Supply","version":"1.0","type":"link"}