DEWENWILS 30A RV Power Outlet Box NEMA TT-30R – Galvanized Steel, Lockable Weatherproof with Power Indicator

DEWENWILS 30 Amp RV Power Electrical Outlet Box (NEMA TT-30R) is a weatherproof, lockable RV receptacle assembly built from galvanized steel with ETL certification for secure 30A campsite and outdoor power connections.

This heavy-duty RV outlet box combines a UL-listed TT-30R receptacle, a rust-resistant metal housing, and a swing cover with a power indicator to make shore power hookups safer and easier. Built for outdoor environments, the unit meets NEMA 3R performance expectations and includes multiple knockout sizes, pre-punched mounting holes, and anti-theft features. It’s designed to accept standard 30A RV cords and simplify wiring and installation while protecting connections from weather and tampering.

How does this outlet box make RV hookups simpler and safer?

The DEWENWILS box groups the receptacle, protective cover, and mounting hardware into a ready-to-install assembly so you don’t need separate parts. An integrated power status indicator helps you confirm live power instantly, and the swing cover fully shields cords and plugs from the elements.

• ETL-listed 30A TT-30R socket for code-compliant connections
• Power indicator light for quick live-power checks
• Full swing cover that seals around plugged-in cords
• Multiple knockout sizes (1/2", 3/4", 1") for flexible wiring

What weather and security protections does it provide?

The galvanized steel housing is treated to resist rust and corrosion, so the unit remains dependable in rain, snow, and coastal conditions. The design includes an extended latch with a blocking feature and a padlock option to deter theft and accidental opening.

• Galvanized steel body for long-term corrosion resistance
• NEMA-3R-style weather protection for outdoor mounting
• Lockable latch and anti-theft blocking device
• Sealed swing cover that keeps water and debris out

How easy is installation and wiring for a DIYer or electrician?

Installation is streamlined by pre-punched holes on multiple sides of the box—no extra drilling required for many mounting scenarios. The interior offers extra room for cable routing and screw mounting, and the included hole covers let you choose the correct conduit size and wiring angle.

• Pre-punched mounting holes reduce on-site modification
• Spacious internal cavity for easier wire connections
• Three knockout cover sizes included for 1/2", 3/4", and 1" fittings
• Cover can be fixed at top position for easier access while wiring

Will this work with my existing RV power setup?

The box is built around a standard NEMA TT-30R (30A) receptacle, so it accepts conventional 30A RV power cords used at most campgrounds and RV parks. It’s suitable for travel trailers, motorhomes with 30A shore power, and other 30-amp shore-power applications.

• Compatible with standard 30A NEMA TT-30R RV cords
• ETL listing and UL-listed receptacle for compliance reassurance
• Works with shore-power pedestals and fixed dock or campground installs
• Indicator light verifies connection before plugging in appliances

Who is this for: The DEWENWILS 30 Amp RV Power Electrical Outlet Box is aimed at RV owners, campground operators, and DIYers who need a durable, weather-resistant, and secure shore-power outlet. It’s a practical choice for anyone installing or upgrading a 30A outdoor receptacle—especially in exposed or high-traffic locations where corrosion resistance and theft prevention matter.