Southwire Surge Guard 40450RVC3 50A Automatic Transfer Switch

Get complete, automatic electrical protection and smart network communication in one unit with the SouthWire Surge Guard 40450RVC3 50 Amp Automatic Transfer Switch. This permanently installed switch seamlessly manages the transfer between shore power and generator power while guarding your entire rig against the faulty park power that damages so many RV electrical systems.

Automatic Transfer With Smart Timing

The 40450RVC3 automatically transfers to generator power after a 30-second delay once the generator is energized, then shifts back to shore power after a 3-second delay once the generator is shut off. These built-in delays let power sources stabilize before taking the load, protecting your sensitive equipment from rough, damaging transitions.

Total Protection From Faulty Park Power

Beyond transfer switching, the 40450RVC3 provides total electrical protection with multi-mode surge suppression (3,350 joules), guarding your RV against:

• Power surges
• Open ground and open neutral
• Low and high voltage
• Reverse polarity
• High and low frequency

These are the most common — and most damaging — faults found at campground pedestals.

RVC Network Communication

What sets the 40450RVC3 apart is its RVC (RV-C network) communication. It can instantly display voltage, current, and fault conditions on any RVC-compatible device, and uses exclusive shore power sensing technology to communicate both generator and shore power availability across the network. This allows your RV's RVC network to intelligently manage its power source and automatically reconnect to shore power when it becomes available — a level of integration far beyond a basic transfer switch.

Built-In Monitoring

Indicator lights on the front of the unit show the presence of input power for both L1 and L2, while voltage and current are continuously monitored and indicated, so you always have a clear picture of your electrical status.

Built to UL Standards

The 40450RVC3 carries a UL 1008 full transfer switch rating and is UL/CUL listed — the certification you want behind a hardwired switch handling 50 amps in your coach.

Key Features

• 50 amp automatic transfer switch with total RV power protection
• Permanent installation for SouthWire power boxes
• Automatic generator transfer (30-sec delay) and shore power return (3-sec delay)
• Multi-mode surge suppression — 3,350 joules
• Protection against surges, open ground/neutral, low/high voltage, reverse polarity, and frequency faults
• RVC network communication with instant voltage, current, and fault display
• Exclusive shore power sensing for smart source management
• L1/L2 indicator lights and continuous voltage/current monitoring
• UL 1008 full transfer switch rating, UL/CUL listed

Specifications

• Brand: SouthWire / Surge Guard
• Model: 40450RVC3
• Rating: 50A
• Voltage: 120V / 240V
• Frequency: 60 Hz
• Surge Suppression: 3,350 joules, multi-mode
• Generator Transfer Delay: 30 seconds
• Shore Power Return Delay: 3 seconds
• Certification: UL 1008 full transfer switch rating, UL/CUL listed
• Dimensions: 8.84" W x 13.5" L x 5.21" D