{"product_id":"rtsn400k3","title":"Generac 400 Amp 3-Phase Transfer Switch RTSN400K3 | 277\/480V Non-Service Rated NEMA 3R","description":"\u003ch2\u003eIndustrial-Grade Automatic Power Transfer for High-Voltage Three-Phase Systems\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGenerac RTSN400K3 400 Amp Non-Service Rated Automatic Transfer Switch\u003c\/strong\u003e delivers robust, reliable backup power protection for industrial facilities, large commercial buildings, and high-voltage applications with 277\/480V three-phase electrical service. Engineered for demanding industrial environments, this transfer switch ensures seamless utility-to-generator transitions that keep your critical operations running during power outages.\u003c\/p\u003e\n\u003ch3\u003eBuilt for High-Voltage Industrial Applications\u003c\/h3\u003e\n\u003cp\u003eThe 277\/480V three-phase configuration is the standard for industrial facilities, large commercial buildings, and high-power applications. With a 400-amp rating, the RTSN400K3 is designed to handle substantial electrical loads including large HVAC systems, industrial machinery, manufacturing equipment, data center infrastructure, and commercial building systems. This transfer switch is engineered to protect these critical systems with automatic switching technology that maximizes uptime and operational continuity.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400-amp rating\u003c\/strong\u003e – handles substantial industrial and commercial electrical demands\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e277\/480V 3-phase configuration\u003c\/strong\u003e – designed specifically for high-voltage industrial three-phase electrical systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-service rated design\u003c\/strong\u003e – installs downstream of your main service disconnect for flexible system design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic operation\u003c\/strong\u003e – instant power transfer with zero manual intervention required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNEMA 3R weatherproof enclosure\u003c\/strong\u003e – outdoor-rated for reliable performance in harsh industrial environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerac-engineered integration\u003c\/strong\u003e – seamless compatibility with Generac industrial standby generators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast transfer time\u003c\/strong\u003e – switches to backup power within seconds of detecting utility failure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty construction\u003c\/strong\u003e – built for long-term reliability in demanding industrial environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal for Industrial \u0026amp; Large Commercial Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturing plants and industrial production facilities\u003c\/li\u003e\n\u003cli\u003eLarge commercial office buildings and corporate campuses\u003c\/li\u003e\n\u003cli\u003eData centers and mission-critical server facilities\u003c\/li\u003e\n\u003cli\u003eHospitals, medical centers, and healthcare campuses\u003c\/li\u003e\n\u003cli\u003eEducational institutions and university facilities\u003c\/li\u003e\n\u003cli\u003eWater treatment and wastewater facilities\u003c\/li\u003e\n\u003cli\u003eFood processing and cold storage operations\u003c\/li\u003e\n\u003cli\u003eDistribution centers and logistics facilities\u003c\/li\u003e\n\u003cli\u003eAny facility with 3-phase 277\/480V electrical service requiring high-capacity backup power\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNon-Service Rated Installation Flexibility\u003c\/h3\u003e\n\u003cp\u003eThe non-service rated design means this transfer switch installs downstream of your existing main service disconnect. This configuration is ideal for facilities that already have a main electrical panel or where the transfer switch needs to protect specific critical loads rather than the entire electrical service. It provides flexibility in system design and allows for selective backup power distribution to essential equipment and systems.\u003c\/p\u003e\n\u003ch3\u003eAutomatic Power Transfer for Mission-Critical Operations\u003c\/h3\u003e\n\u003cp\u003eWhen utility power fails, the RTSN400K3 instantly detects the outage, signals your Generac standby generator to start, and automatically transfers your electrical load to backup power once the generator reaches stable operating voltage. When utility power returns, the system seamlessly transfers back and signals the generator to shut down after a proper cool-down period—all completely automatic with no operator intervention required, ensuring continuous operation of critical systems.\u003c\/p\u003e\n\u003ch3\u003eSeamless Generac Generator Integration\u003c\/h3\u003e\n\u003cp\u003eThe RTSN400K3 is designed to work flawlessly with Generac's complete line of industrial standby generators. The transfer switch communicates directly with your generator, coordinating startup sequences, monitoring readiness, managing load transfer, and controlling shutdown procedures—ensuring reliable, coordinated operation of your entire backup power system.\u003c\/p\u003e\n\u003ch3\u003eBuilt for Reliability in Demanding Environments\u003c\/h3\u003e\n\u003cp\u003eHoused in a NEMA 3R weatherproof enclosure, this transfer switch is engineered for outdoor installation and long-term reliability in harsh industrial weather conditions. Generac's proven industrial-grade transfer switch technology ensures dependable performance when your facility needs it most, with robust components designed for thousands of switching cycles over decades of service.\u003c\/p\u003e\n\u003ch3\u003eProfessional Installation Required\u003c\/h3\u003e\n\u003cp\u003eThis transfer switch must be installed by a licensed electrician familiar with high-voltage three-phase electrical systems and local electrical codes. Professional installation ensures safe, code-compliant operation and proper integration with your existing electrical infrastructure and Generac standby generator system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProtect your industrial operations and production continuity with heavy-duty high-voltage backup power technology built for the most demanding environments.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Generac","offers":[{"title":"Default Title","offer_id":42534214828137,"sku":"RTSN400K3","price":2619.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0636\/8913\/0089\/files\/515Wx515H-RTSN400K3-Main-Product-Image-1200Wx1200H.jpg?v=1766256209","url":"https:\/\/www.mrvoltinc.com\/es\/products\/rtsn400k3","provider":"Mr. Volt, Inc.","version":"1.0","type":"link"}