My Account
Shopping Cart

SmartPlug C30503 30 Amp 50' Dual Configuration Shore Power Cordset

Manufacturer

SmartPlug

<h3>SmartPlug: Reinventing Shore Power Safety for Marine &amp; RV Applications</h3><p>Founded in 2007 in Seattle, Washington, SmartPlug set out to solve one of the most persistent hazards in boating and RV ownership: unreliable shore power connections. Traditional twist-lock connectors — largely unchanged since the 1930s — are notorious for developing loose connections and corrosion over time, two of the leading causes of electrical fires at marinas and campgrounds. SmartPlug was built from the ground up to change that.</p><h3>A Patented System Built Around Safety</h3><p><strong>SmartPlug's shore power system</strong> replaces the aging twist-type design with an intuitive, straight-in connector that locks securely using side clips rather than relying on a threaded collar. The result is a system that delivers dramatically more electrical contact area than conventional connectors, a multi-point locking mechanism, and triple weatherproof seals that keep moisture, salt spray, and dust out of the housing — the very conditions that cause corrosion and connection failures.</p><p>The 30-amp inlet also features an epoxy-potted thermal breaker that trips before wire jackets can melt, then automatically resets once temperatures drop to a safe level — a safety feature found in no other shore power system on the market. Even installation is thoughtfully designed, with color-coded clamping screws that match standard wire colors to make the process nearly foolproof.</p><h3>A Full Line of Shore Power Products</h3><p>SmartPlug's product catalog covers every link in the shore power chain. Whether you need a retrofit connector for an existing cord, a complete inlet-and-connector combo kit, or a full cordset for a new installation, SmartPlug offers solutions for 15-amp, 30-amp, and 50-amp systems. Their <a href="/11569-smartplug-marinco-shore-power-adaptors-202219">shore power adaptors</a> are especially popular among boaters who frequent diverse marinas where outlet configurations vary, ensuring a compatible, secure connection is always within reach. Beyond marine use, SmartPlug also produces RV, specialty vehicle, and dockside power products, making their system one of the most versatile shore power platforms available.</p><h3>Why Boaters and RV Owners Trust SmartPlug</h3><p>SmartPlug products are respected by marine electricians, insurance professionals, and passionate boaters alike. The ergonomic straight-in design eliminates the fumbling and torquing associated with twist-locks — a meaningful advantage when connecting in the dark, in rough weather, or for users with limited hand strength. The brand's commitment to continuous improvement is evident in ongoing design refinements driven by real-world feedback from the boating and RV community.</p><p>For anyone who stores their boat or RV at a dock or campground for extended periods, upgrading to a SmartPlug system is one of the most impactful electrical safety investments available.</p>

Part Number

C30503
06/01/2036 11:11 AM
Sale Price

$323.97

2 left at this price

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The SmartPlug C30503 is a 50-foot, 30-amp dual configuration shore power cordset designed to modernize your boat's shore power connection while maintaining compatibility with standard marina pedestals. This innovative cordset features a SmartPlug 30A connector on the boat end and a standard NEMA L5-30P twist-lock plug on the dock end, allowing you to upgrade to superior SmartPlug technology without requiring marina infrastructure changes.

Key Features:

  • Dual Configuration Design: SmartPlug boat-side connector with standard NEMA twist-lock dock-side plug for universal marina compatibility
  • Superior Electrical Contact: Straight electrical pins with 20 times more contact surface area than curved NEMA pins eliminate hotspots and reduce resistance
  • Premium Materials: Tinned copper wire throughout entire length provides maximum conductivity and corrosion resistance; 316 stainless steel external components; nickel-plated brass pins
  • Secure Connection: Sleeve design fits snugly within inlet, eliminating tension on pins; spring-loaded side clips lock automatically
  • Weatherproof Construction: TPE Dyna-flex cord seal creates reliable weatherproof barrier at power cord connection point
  • Visual Power Indicator: Cool blue LED light on connector confirms active power supply
  • Cold-Weather Flexible: Super-flexible cord remains pliable and easy to coil even in freezing temperatures
  • Foolproof Installation: Unique plug shape ensures correct orientation; pushes straight in without twisting

What's Included:

  • 50-foot SmartPlug Dual Configuration Cordset
  • Zip storage bag

The SmartPlug system addresses the fundamental weaknesses of shore power technology that has remained essentially unchanged since 1938. Traditional NEMA connectors suffer from poor metal-to-metal contact due to curved pin design, leading to resistance, overheating, and potential failure. SmartPlug's straight-pin design with dramatically increased contact area, combined with premium materials and secure locking mechanism, delivers safer, more reliable shore power delivery. Compatible with SmartPlug shore power inlets (sold separately).

Products specifications

Amperage

30 Amps

Length

50 Feet

Voltage

125 Volts

Warranty Details

Seven Years; Limited Warranty

Great

Had the outer CV Joint I needed for the cheapest price on the web. Shipped in two days and got emailed with tracking info. Easy buying experience!

Easy checkout

So far good Fast shipping. Order was as expected

Thanks

Easy and fast

cheapest prices on the internet

Easy and quick

I called to make sure they had it in stock and when it would ship which was told same day as ordered. Just what I wanted to hear.

great price ,lowest on the net ,instock item was a plus thanx

Found the item I was looking for at Autoplicity for $20 cheaper than anywhere else. Shipping was also very quick.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy