{"product_id":"southwire-50a-rv-automatic-transfer-switch-40101-001-120-240v","title":"Southwire 50A RV Automatic Transfer Switch | 40101-001 | 120\/240V","description":"\u003cp\u003eAutomate the power switchover in your dual-source RV electrical system with the \u003cstrong\u003eSouthwire 40101-001 50 Amp Reverse Polarity Automatic Transfer Switch\u003c\/strong\u003e. This permanent-install ATS seamlessly handles the switch between shore power and generator power — automatically prioritizing your generator when it's running and reverting to shore power when the generator shuts down. The right component for any RV that needs reliable, hands-off transitions between shore and generator power sources, with the added safety of integrated reverse polarity and open ground monitoring.\u003c\/p\u003e\n\n\u003ch3\u003eHow the 40101-001 Manages Your Power Sources\u003c\/h3\u003e\n\u003cp\u003eThe Southwire 40101-001 is a \u003cstrong\u003egenerator-dominant automatic transfer switch\u003c\/strong\u003e — meaning when both shore power AND generator power are available simultaneously, the generator takes precedence. Here's how it operates in real-world use:\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShore power only:\u003c\/strong\u003e The ATS routes shore power to your RV's electrical loads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenerator starts up:\u003c\/strong\u003e After a \u003cstrong\u003e30-second delay\u003c\/strong\u003e (allowing the generator to stabilize), the ATS transfers the load from shore to generator\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenerator shuts down:\u003c\/strong\u003e After a \u003cstrong\u003e3-4 second delay\u003c\/strong\u003e, the ATS transfers the load back to shore power for continuous, uninterrupted operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenerator only:\u003c\/strong\u003e The ATS routes generator power directly to your RV\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThat generator-dominant logic is the typical preference for RV owners — when you fire up the generator, you generally want it to take over (often because shore power is unreliable, you've moved off-grid, or you need additional capacity). The 40101-001 handles all of this automatically, with no manual switching required.\u003c\/p\u003e\n\n\u003ch3\u003e50 Amp Service with 80A UL-Listed Capacity\u003c\/h3\u003e\n\u003cp\u003eThe 40101-001 is engineered for \u003cstrong\u003e50 amp RV electrical service\u003c\/strong\u003e — the standard for larger RVs, fifth wheels, and motorhomes. However, the unit is \u003cstrong\u003eUL-listed for up to 80 amps capacity\u003c\/strong\u003e, providing meaningful headroom over its rated service level:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e50A rated continuous service\u003c\/strong\u003e — sized for typical 50A RV loads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e80A UL-listed capacity\u003c\/strong\u003e — handles transient inrush currents and high-demand cycling without strain\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual contactor arrangement\u003c\/strong\u003e for reliable load switching\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanical interlocking contactors\u003c\/strong\u003e — prevents both contactors from closing simultaneously (critical safety feature)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIntegrated Reverse Polarity Detection\u003c\/h3\u003e\n\u003cp\u003eThe 40101-001 includes \u003cstrong\u003eLED indicators for reverse polarity and open ground conditions\u003c\/strong\u003e — meaningful safety features for buyers connecting to unfamiliar shore power pedestals:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReverse polarity LED\u003c\/strong\u003e — warns when shore power has incorrect line\/neutral wiring (a real safety hazard at older or improperly maintained campgrounds)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpen ground LED\u003c\/strong\u003e — warns when shore power lacks proper ground connection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVisual at-a-glance status\u003c\/strong\u003e — see immediately if the pedestal you're plugged into has wiring problems before powering up sensitive electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReverse polarity is particularly important for RV electrical safety — when line and neutral are swapped, components that should be at neutral voltage become live, creating shock hazards even when appliances appear \"off.\" The 40101-001's monitoring catches this before damage or injury can occur.\u003c\/p\u003e\n\n\u003ch3\u003eTime Delay at Power Up — Component Protection\u003c\/h3\u003e\n\u003cp\u003eThe 40101-001 features \u003cstrong\u003etime delay at power up\u003c\/strong\u003e — preventing immediate load transfer when power sources energize. This protects sensitive electronics in your RV by allowing power sources to stabilize before connecting them to load.\u003c\/p\u003e\n\n\u003ch3\u003e⚠️ NOT a Surge Protector\u003c\/h3\u003e\n\u003cp\u003eImportant clarification: the 40101-001 is an \u003cstrong\u003eautomatic transfer switch — NOT a surge protector\u003c\/strong\u003e. It does not provide surge protection or voltage stabilization. If your RV electrical system needs surge protection, you should install a dedicated RV surge protector at the shore power connection — separate from this ATS. The 40101-001's job is power source switching, not voltage event protection. Both serve important but different roles in a complete RV electrical safety setup.\u003c\/p\u003e\n\n\u003ch3\u003e120V \/ 240V Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 40101-001 operates on standard RV \u003cstrong\u003e120V\/240V electrical service\u003c\/strong\u003e at 60 Hz — compatible with both shore power pedestals and standard RV generator output configurations.\u003c\/p\u003e\n\n\u003ch3\u003ePermanent Installation Design\u003c\/h3\u003e\n\u003cp\u003eThe 40101-001 is engineered for \u003cstrong\u003epermanent installation\u003c\/strong\u003e in your RV's electrical compartment — not a temporary or portable transfer switch. Once installed, it provides automated power source management for the life of the RV without requiring manual intervention.\u003c\/p\u003e\n\n\u003ch3\u003eDimensions and Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\/Depth:\u003c\/strong\u003e 10.75\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 8.48\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 5.19\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 8.78 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120V\/240V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 60 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContactor Rating:\u003c\/strong\u003e 50A FLA (Full Load Amps)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUL Capacity:\u003c\/strong\u003e Up to 80A\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e⚠️ Professional Installation Required\u003c\/h3\u003e\n\u003cp\u003eAutomatic transfer switch installation involves \u003cstrong\u003eworking with high-current AC electrical wiring (50A service is substantial), connecting both shore power and generator power feeds, and integrating with the RV's main electrical panel\u003c\/strong\u003e. Improper installation can result in fire hazards, electrical damage, electrocution risk, or non-compliant electrical work. Installation should be performed by a \u003cstrong\u003equalified RV electrician or service technician\u003c\/strong\u003e with experience working on 50A RV electrical systems.\u003c\/p\u003e\n\n\u003ch3\u003eLimited Lifetime Manufacturer Warranty\u003c\/h3\u003e\n\u003cp\u003eThe 40101-001 is backed by Southwire's \u003cstrong\u003elimited lifetime manufacturer warranty\u003c\/strong\u003e — meaningful protection for a component that should provide many years of reliable service.\u003c\/p\u003e\n\n\u003ch3\u003e⚠️ California Proposition 65 Warning\u003c\/h3\u003e\n\u003cp\u003eThis product may contain materials cautioned by California Proposition 65. Buyers in California should review applicable Prop 65 disclosures.\u003c\/p\u003e\n\n\u003ch3\u003eGenuine Southwire OEM\u003c\/h3\u003e\n\u003cp\u003eAs a Southwire factory unit, the 40101-001 delivers OEM engineering and quality for permanent RV electrical installations.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenuine Southwire\u003c\/strong\u003e 50A automatic transfer switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenerator-dominant\u003c\/strong\u003e switching logic — generator takes priority over shore when both available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e30-second delay\u003c\/strong\u003e on transfer to generator (allows stabilization)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3-4 second delay\u003c\/strong\u003e on transfer back to shore power\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUL-listed up to 80A\u003c\/strong\u003e capacity — meaningful headroom over 50A rated service\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReverse polarity LED indicator\u003c\/strong\u003e — safety warning for incorrect shore wiring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpen ground LED indicator\u003c\/strong\u003e — safety warning for missing ground\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanical interlocking contactors\u003c\/strong\u003e — prevents simultaneous closure (safety)\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eDual contactor arrangement\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTime delay at power up\u003c\/strong\u003e for sensitive component protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120V\/240V, 60Hz\u003c\/strong\u003e compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePermanent installation\u003c\/strong\u003e design\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoes NOT provide surge protection\u003c\/strong\u003e (use a separate dedicated surge protector for that)\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eLimited lifetime manufacturer warranty\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003eDimensions: 10.75\" L × 8.48\" W × 5.19\" H\u003c\/li\u003e\n  \u003cli\u003eWeight: 8.78 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: Southwire\u003c\/li\u003e\n  \u003cli\u003ePart Number: 40101-001\u003c\/li\u003e\n  \u003cli\u003eType: 50 Amp Reverse Polarity Automatic Transfer Switch\u003c\/li\u003e\n  \u003cli\u003eAmperage: 50A rated, UL-listed up to 80A\u003c\/li\u003e\n  \u003cli\u003eContactor Rating: 50A FLA\u003c\/li\u003e\n  \u003cli\u003eVoltage: 120V\/240V\u003c\/li\u003e\n  \u003cli\u003eFrequency: 60 Hz\u003c\/li\u003e\n  \u003cli\u003ePolarity Type: Reverse (with monitoring)\u003c\/li\u003e\n  \u003cli\u003eGenerator-Dominant: Yes\u003c\/li\u003e\n  \u003cli\u003eTime Delay to Generator: 30 seconds\u003c\/li\u003e\n  \u003cli\u003eTime Delay to Shore: 3-4 seconds\u003c\/li\u003e\n  \u003cli\u003eTime Delay at Power Up: Yes\u003c\/li\u003e\n  \u003cli\u003eIndicators: Reverse polarity LED, Open ground LED\u003c\/li\u003e\n  \u003cli\u003eContactor Arrangement: Dual, mechanically interlocked\u003c\/li\u003e\n  \u003cli\u003eSurge Protection: NOT included (separate surge protector required for voltage event protection)\u003c\/li\u003e\n  \u003cli\u003eInstallation: Permanent\u003c\/li\u003e\n  \u003cli\u003eUL Listed: Yes\u003c\/li\u003e\n  \u003cli\u003eDimensions: 10.75\" L × 8.48\" W × 5.19\" H\u003c\/li\u003e\n  \u003cli\u003eWeight: 8.78 lbs\u003c\/li\u003e\n  \u003cli\u003eWarranty: Limited lifetime manufacturer warranty\u003c\/li\u003e\n  \u003cli\u003eCalifornia Proposition 65: Product may contain Prop 65 cautioned materials\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Southwire","offers":[{"title":"Default Title","offer_id":58116412244271,"sku":null,"price":443.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7663\/0063\/files\/SOU-40101-001.webp?v=1782751821","url":"https:\/\/thervsurplus.com\/en-au\/products\/southwire-50a-rv-automatic-transfer-switch-40101-001-120-240v","provider":"The RV Surplus","version":"1.0","type":"link"}