{"product_id":"generac-100-amp-automatic-transfer-switch-se-rated-service-entrance-whole-home-backup-with-smart-ac-module","title":"Generac 100 Amp Automatic Transfer Switch — SE Rated Service-Entrance, Whole-Home Backup with Smart AC Module","description":"\u003cp\u003e\u003cstrong\u003eThe Generac 100 Amp Legacy Automatic Generator Transfer Switch (RXSW100A3) automatically senses outages and transfers your entire 100A service to a compatible Generac standby generator for whole-home backup.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis service-entrance-rated transfer switch is built to connect a Generac home standby generator with an Evolution or Nexus controller to your main electrical panel, enabling fully automatic whole-house power switching up to 100 amps. It replaces manual interlock arrangements by starting the generator and moving the entire panel onto generator power when utility service fails, then reversing the process when utility power returns.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this switch protect my home and utility workers?\u003c\/h3\u003e\n\u003cp\u003eThe unit uses an open-transition mechanical transfer method that never ties utility and generator power together, preventing backfeed into the grid. That isolation protects line crews and keeps your home wiring from being energized unexpectedly during an outage or restoration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOpen-transition contactor prevents simultaneous connection of utility and generator.\u003c\/li\u003e\n  \u003cli\u003eService-entrance rating means it functions as your main disconnect under load.\u003c\/li\u003e\n  \u003cli\u003ePowder-coated NEMA 3R aluminum housing resists corrosion outdoors or in garages.\u003c\/li\u003e\n  \u003cli\u003eRequires a licensed electrician and permits for safe, code-compliant installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat electrical load can it handle for whole-home backup?\u003c\/h3\u003e\n\u003cp\u003eThis 100-amp switch supports your entire 120V and 240V panel, allowing up to roughly 24,000 watts of generator supply depending on the generator model and configuration. It enables backup of major 240V appliances and central HVAC loads when paired with an appropriately sized Generac standby generator.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated for full 100A service—covers whole-panel loads versus limited 30A or 50A manual options.\u003c\/li\u003e\n  \u003cli\u003eCompatible with Generac standby generators using a floating neutral design.\u003c\/li\u003e\n  \u003cli\u003eActual supported wattage and run time depend on the chosen generator and its fuel.\u003c\/li\u003e\n  \u003cli\u003eNot intended for portable generators or units with bonded neutrals from other brands.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDoes this switch manage air conditioning and multiple large loads?\u003c\/h3\u003e\n\u003cp\u003eYes—the RXSW100A3 includes a built-in Smart AC Module that sequences up to four HVAC loads so your generator can handle cycling high-demand equipment efficiently. If you need additional load management, Generac's optional Smart Management Modules expand controlled circuits without rewiring the main transfer switch.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuilt-in Smart AC Module sequences up to four HVAC systems automatically.\u003c\/li\u003e\n  \u003cli\u003eOptional Smart Management Modules let you add staged control for more circuits.\u003c\/li\u003e\n  \u003cli\u003eLoad sequencing optimizes generator capacity and reduces peak strain.\u003c\/li\u003e\n  \u003cli\u003eNo extra hardware required for basic HVAC sequencing; extras are modular as needs grow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation and compatibility?\u003c\/h3\u003e\n\u003cp\u003eBecause this device serves as the service disconnect for your home, local electrical codes typically require a licensed electrician and permit for installation. Confirm your generator model uses a floating neutral and an Evolution or Nexus controller before ordering to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInstallation by a licensed electrician is required; this is not a DIY product.\u003c\/li\u003e\n  \u003cli\u003eDesigned specifically for Generac standby generators with Evolution or Nexus controls.\u003c\/li\u003e\n  \u003cli\u003eDoes not include generator, inlet box, or cord; those are sold separately.\u003c\/li\u003e\n  \u003cli\u003eAllow roughly 20 inches height and 15 inches width clearance beside your main panel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Generac 100 Amp Legacy Automatic Transfer Switch is for homeowners who want fully automatic, whole-house standby power using a compatible Generac standby generator. It suits properties that require backup of large 240V loads—like central HVAC, well pumps, and dryers—and for anyone who prefers an automated, code-compliant transfer solution managed by a licensed electrician rather than manually switching circuits during outages.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this switch work with a portable generator?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. It is engineered for Generac standby generators with a floating neutral and Evolution or Nexus controller, not portable units.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need an electrician to install it?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is service-entrance rated and typically requires a licensed electrician and local permits for installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Generac","offers":[{"title":"Default Title","offer_id":56806085755220,"sku":"B077KPNPQ8","price":878.07,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/generac-transfer-switch-front-panel.jpg?v=1786812886","url":"https:\/\/gardenluxe.co.uk\/products\/generac-100-amp-automatic-transfer-switch-se-rated-service-entrance-whole-home-backup-with-smart-ac-module","provider":"Gardenluxe Uk","version":"1.0","type":"link"}