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SmartPlug C30503 30 Amp 50' Dual Configuration Shore Power Cordset

Manufacturer

SmartPlug

<h3>SmartPlug: Redefining Shore Power Safety</h3><p>Founded in 2007 and headquartered in Seattle, Washington, <strong>SmartPlug</strong> set out to solve one of the most persistent — and dangerous — problems in marine and RV shore power: the twist-type connector. That legacy design, virtually unchanged for decades, is prone to loosening over time and highly susceptible to corrosion, two of the leading causes of shore power failure and electrical fires at marinas and campgrounds alike. SmartPlug's engineering team replaced it with a straight-blade, non-twist connection system that locks securely, seats fully, and provides consistently reliable contact every time.</p><h3>Innovation Built Around Safety</h3><p>What distinguishes SmartPlug from conventional shore power products is the depth of engineering behind what looks like a simple plug. The connector's design eliminates the micro-movements that cause arcing and heat buildup inside twist-lock systems. By improving the contact surface area and reducing the opportunity for corrosion to interrupt the circuit, SmartPlug products actively reduce the risk of shore power fires — a well-documented hazard in the boating community. The result is a connection that is not only safer but also simpler to use, even with wet hands or in low-light conditions at the dock.</p><h3>A Complete Shore Power Ecosystem</h3><p>SmartPlug has built a comprehensive lineup that covers every stage of a shore power installation. Their <a href="/11569-smartplug-shorepower-accessories-200944">shorepower accessories</a> include inlets, connectors, combo kits, cordsets, and dock &amp; lift kits, giving boaters and RV owners everything needed for a full system upgrade or a targeted replacement. Whether you are retrofitting an older vessel, outfitting a new slip, or upgrading a dockside power pedestal, there is a SmartPlug component designed for the job.</p><p>For situations that require adapting between different connector standards — whether bridging 30-amp and 50-amp systems or connecting to international marina power — SmartPlug's <a href="/200657-shore-power-adaptors-smartplug-11569">shore power adaptors</a> maintain the same commitment to secure, corrosion-resistant connections. Rather than relying on generic adaptor hardware that can introduce the same vulnerabilities SmartPlug's system was designed to eliminate, these adaptors are purpose-built to work seamlessly within the SmartPlug ecosystem.</p><h3>Marine, RV, and Specialty Applications</h3><p>Although SmartPlug gained recognition first in the marine market, their product range extends to RV and specialty applications as well. This versatility reflects the brand's core philosophy: that safe, reliable shore power matters wherever people connect to grid electricity away from home. From recreational boaters to liveaboards to full-time RV travelers, SmartPlug products are designed for the real-world conditions their users face — salt air, UV exposure, rain, and repeated daily use.</p><h3>Why SmartPlug Matters</h3><p>Choosing SmartPlug is not simply a convenience upgrade — it is a meaningful safety decision. Electrical fires originating from shore power connections have caused significant damage to vessels and marina infrastructure. SmartPlug's straight-blade locking design, high-quality materials, and corrosion-resistant construction directly address the root causes of those incidents. For anyone who regularly plugs into shore power, upgrading to SmartPlug hardware is one of the most impactful safety improvements available.</p>

Part Number

C30503
09/22/2036 11:02 AM
Sale Price

$345.14

In Stock (9)

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Usually delivered within 2 days

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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

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