{"title":"Autotransformers","description":"\u003cp\u003eAutotransformers\u003c\/p\u003e","products":[{"product_id":"victron-autotransformer-120-240v-100a","title":"Victron Autotransformer 120\/240V-100A — High-Current Split-Phase Converter (Whole-Home)","description":"\u003cp\u003e\u003cstrong\u003eThe Victron Autotransformer 120\/240V-100A is the high-current version of the 120\/240V autotransformer\u003c\/strong\u003e — 100A per 120V leg (24kVA total split-phase capacity). Sized for whole-home applications, large RVs with 50A service, and commercial backup installs where you need split-phase output from a single-phase inverter source.\u003c\/p\u003e\n\n\u003ch2\u003eWhat it does\u003c\/h2\u003e\n\u003cp\u003eSame functions as the 32A model, but at 3× the capacity:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSplits 120V to 120\/240V\u003c\/strong\u003e — whole-home capable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalances split-phase loads\u003c\/strong\u003e — 100A per leg means no leg overload\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoost or buck 120V\u003c\/strong\u003e — ±10% voltage adjustment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUse with parallel MultiPlus\u003c\/strong\u003e — enables 2× MultiPlus 12\/3000 parallel to feed a 50A split-phase load\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen you need 100A\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhole-home backup\u003c\/strong\u003e — entire residential 100A service from a single-phase inverter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge 50A RV\u003c\/strong\u003e — distribute full 50A shore between both 120V legs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommercial backup\u003c\/strong\u003e — office or retail with 100A service\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOff-grid home with electric heat or AC\u003c\/strong\u003e — 240V heat pump or central AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOff-grid home with multiple 240V appliances\u003c\/strong\u003e — well pump + dryer + range + water heater\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEV charger backup\u003c\/strong\u003e — 240V Level 2 charging from a single-phase battery system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eInput voltage\u003c\/th\u003e\n\u003ctd\u003e120V (single-phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eOutput voltage\u003c\/th\u003e\n\u003ctd\u003e120V \/ 240V (split-phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eContinuous current rating\u003c\/th\u003e\n\u003ctd\u003e100A per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eMaximum 240V load\u003c\/th\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eTotal capacity\u003c\/th\u003e\n\u003ctd\u003e~24 kVA split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eVoltage adjustment\u003c\/th\u003e\n\u003ctd\u003e±10% boost\/buck (configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCooling\u003c\/th\u003e\n\u003ctd\u003ePassive convection\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eOperating temperature\u003c\/th\u003e\n\u003ctd\u003e-20°C to +50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eWall or floor mount\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eManufacturer SKU\u003c\/th\u003e\n\u003ctd\u003eITR040020041 (verify with distributor)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e5 years (manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eRecommended applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhole-home off-grid\u003c\/strong\u003e — single-phase inverter feeding split-phase residential\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhole-home backup with parallel MultiPlus\u003c\/strong\u003e — 2× or 3× MultiPlus in parallel feeding split-phase\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge RV (50A) with single-phase inverter\u003c\/strong\u003e — substantial cost savings vs MultiPlus-II split-phase\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge marine yacht\u003c\/strong\u003e — substantial 240V load capability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommercial \/ professional backup\u003c\/strong\u003e — small office\/retail full-service backup\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOff-grid homestead with EV\u003c\/strong\u003e — Level 2 charging from battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEvery Jonsson Tech order ships within 5 days nationwide from our Houston, Texas warehouse. Free pre-purchase consultation — send us your inverter setup and intended 240V loads.\u003c\/p\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":48201402220763,"sku":"ITR040020041","price":509.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/3200\/9947\/files\/auto.jpg?v=1769687692"},{"product_id":"victron-autotransformer-120-240v-32a","title":"Victron Autotransformer 120\/240V-32A — Convert Single 120V to Split-Phase 120\/240V","description":"\u003cp\u003e\u003cstrong\u003eThe Victron Autotransformer 120\/240V-32A converts a single-phase 120V source into balanced split-phase 120V\/240V\u003c\/strong\u003e — useful when your MultiPlus inverter outputs single-phase 120V but you have a 240V appliance (well pump, water heater, dryer) or a 50A split-phase shore power connection that needs to be balanced. Also balances loads between two 120V legs to prevent neutral current overload.\u003c\/p\u003e\n\n\u003ch2\u003eWhat it does\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSplits 120V to 120\/240V\u003c\/strong\u003e — take a single 120V output and create a center-tapped 240V output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalances split-phase loads\u003c\/strong\u003e — evens out current between two 120V legs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoost or buck 120V\u003c\/strong\u003e — configurable to step up undervoltage or step down overvoltage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEliminates the need for a 2x120V MultiPlus-II\u003c\/strong\u003e — use a single-phase MultiPlus 12\/2000 with an autotransformer instead of upgrading to the more expensive split-phase MultiPlus-II\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen you need a 120\/240V autotransformer\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRV with 50A shore power but single-phase MultiPlus\u003c\/strong\u003e — distribute 50A shore between two 120V legs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOff-grid home with 240V well pump\u003c\/strong\u003e — power a 240V pump from a single-phase inverter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine 240V appliances\u003c\/strong\u003e — dryer, water heater, AC unit on a single-phase inverter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage stabilization\u003c\/strong\u003e — boost weak shore power up to proper 120V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnbalanced load correction\u003c\/strong\u003e — prevent one 120V leg from overheating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eInput voltage\u003c\/th\u003e\n\u003ctd\u003e120V (single-phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eOutput voltage\u003c\/th\u003e\n\u003ctd\u003e120V \/ 240V (split-phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eContinuous current rating\u003c\/th\u003e\n\u003ctd\u003e32A per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eMaximum 240V load\u003c\/th\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eVoltage adjustment\u003c\/th\u003e\n\u003ctd\u003e±10% boost\/buck (configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCooling\u003c\/th\u003e\n\u003ctd\u003ePassive convection\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eOperating temperature\u003c\/th\u003e\n\u003ctd\u003e-20°C to +50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eWall or floor mount\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eManufacturer SKU\u003c\/th\u003e\n\u003ctd\u003eITR000100001\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e5 years (manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eRecommended applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e30A or 50A RV with single-phase MultiPlus\u003c\/strong\u003e — use single-phase inverter + autotransformer instead of MultiPlus-II split-phase\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOff-grid home with 240V well pump\u003c\/strong\u003e — critical for irrigation, water supply\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eOff-grid cabin with 240V water heater\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine with 240V galley equipment\u003c\/strong\u003e — induction cooktop, washer\/dryer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage boost\u003c\/strong\u003e — long shore power cable runs with voltage drop\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eBackup power with mixed 120V \/ 240V loads\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNeed more capacity?\u003c\/h2\u003e\n\u003cp\u003eFor higher-current applications (50A+ continuous), see the \u003cstrong\u003eAutotransformer 120\/240V-100A\u003c\/strong\u003e. For lower-current applications, this 32A version handles up to ~7600W of split-phase load.\u003c\/p\u003e\n\n\u003cp\u003eEvery Jonsson Tech order ships within 5 days nationwide from our Houston, Texas warehouse. Free pre-purchase consultation — send us your inverter type and intended 240V loads to \u003cstrong\u003esupport@jonssontech.net\u003c\/strong\u003e or call \u003cstrong\u003e346-574-9652\u003c\/strong\u003e and we'll confirm sizing.\u003c\/p\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":48212326875355,"sku":"ITR000100001","price":451.35,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/3200\/9947\/files\/auto_72abd3e3-1f6e-4935-881b-0db10b951220.jpg?v=1769975022"}],"url":"https:\/\/www.jonssontech.net\/collections\/autotransformers.oembed","provider":"Jonsson Tech LLC ","version":"1.0","type":"link"}