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SmartPlug B50ASSY 50 Amp Inlet Connector Combo Kit for Marine Shore Power

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

B50ASSY
06/21/2036 4:37 PM
Sale Price

$294.80

In Stock (9)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The SmartPlug B50ASSY 50 Amp Inlet Connector Combo Kit provides everything needed to upgrade your boat's shore power connection with superior overheat protection and reliability. This complete kit includes both the boat inlet and boatside connector, allowing you to replace the boat end of your existing shore power cable with SmartPlug's innovative design that eliminates the common failure points of traditional NEMA twist-lock connectors.

Complete Kit Includes:

  • SmartPlug 50A Boatside Connector with blue LED power indicator
  • Stainless Steel 50A Boat Inlet
  • Rear Mounting Gasket for weatherproof installation
  • Cable Strain Relief
  • Hex Key for installation
  • Complete installation instructions

Key Features and Benefits:

  • Enhanced electrical contact: Straight nickel-plated brass pins provide 20 times more surface area than curved NEMA pins, dramatically reducing resistance and heat buildup
  • No twisting required: Unique plug body shape ensures correct alignment every time—simply push straight in until spring-loaded side clips lock automatically
  • Superior materials: All external metals are marine-grade 316 stainless steel for maximum corrosion resistance
  • Secure connection: Sleeve design fits snugly within the inlet, eliminating movement and tension on electrical contacts
  • Weatherproof construction: TPE Dyna-flex cord seal provides reliable protection against moisture intrusion
  • Integrated locking: Inlet cover snaps securely onto connector sides and top—no plastic locking rings to strip or crack
  • Visual power confirmation: Blue LED indicator light on connector top glows when shore power is connected
  • Easy retrofit installation: Mounts using industry-standard hole pattern compatible with Hubbell, Marinco, and other leading brands

The SmartPlug system addresses the fundamental design flaws of traditional twist-lock connectors by eliminating curved pins, reducing connection movement, and providing foolproof installation. Ideal for sailboats, powerboats, fishing boats, and yachts requiring reliable 50-amp shore power connectivity.

Products specifications

Amperage

50 Amps

Type

Female ConnectorsInlet

Voltage

125 Volts250 Volts

Warranty Details

Seven Years Limited

Item in-stock and shipped fast. Will definitely buy again from seller.

ordered 4 cans to prime/paint/clear coat some rims. paint came in 2-3 days (incredibly fast). They forgot a can, i emailed and got a reply within 20 minutes, and the can was on my doorstep the next day. im very impressed

Fantastic prices + free shipping! What more could one ask for? Looking forward to my new coilover kit! Cheers!

Fast service

Ordered some parts the other day and was impressed, will see if it was a fluke.

20.00 bucks cheaper than summit and ebay on my k&n pod filters for my bike. Ordered on thursday night and product shipped monday. Otherwise great deal.

So far, so good!

Exceeded my expectations searching and ordering

Ordering was easy and hoping it ships as fast. Price was great.

Easy

Very easy to use

well so far

excellent company with great prices and even better customer service. my order arrived, and too my surprise i found that it was not the product i had ordered. the customer service was prompt and i was informed that unknown to autoplicity, the product i ordered was discontinued by the manufacturer and what i recieved was their replacement. this was all unknown to autoplicity and they apoligized sincerely and have rectified the issue very much to my satifaction. the product itself arrived in perfect condition and meets or exceeds my expectations. i will look forward to shopping with autoplicity again due to their great prices and excellent customer service.

I ordered a rear sway bar for my MINI Cooper on Sunday and it was at my door on Wednesday! Autoplicity had the absolute cheapest price for this bar and I was very impressed with the shipping speed. I would definitely recommend them to my friends!

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