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Marinco 305CRCN 30A 125V Locking Connector Replacement Plug

Manufacturer

Marinco

<h3>About Marinco: Trusted Marine Electrical Innovation Since 1972</h3><p><strong>Marinco</strong> has been a cornerstone of the marine electrical industry for more than five decades. The brand traces its roots to 1972, when founder Bud Toly, frustrated by the poor quality of available marine electrical gear, set out to engineer something better from the ground up. That spirit of problem-solving and uncompromising quality has defined Marinco ever since. Today, the brand is part of the Navico Group — a global leader in marine technology — and continues to serve everyone from weekend bass anglers to commercial vessel operators and major OEM boatbuilders.</p><p><a href="/11273-marinco">Marinco</a> is best known as a world-class manufacturer of shore power systems, but its catalog spans far beyond that single category. The brand's engineers design products for the real-world punishment of salt, spray, and constant moisture — environments where inferior components fail quickly and safe, reliable electrical connections are non-negotiable. Industry involvement is baked into the brand's DNA: <a href="/11273-marinco">Marinco</a> actively participates on ABYC standards committees, helping shape the very regulations its products are built to exceed.</p><h3>Shore Power, Signaling, and Ventilation — Built for the Water</h3><p>At the core of Marinco's reputation is its shore power lineup: heavy-duty cordsets, inlets, outlets, and adapters engineered for both 30-amp and 50-amp applications. The patented EEL (Easily Engaged Lock) jaw-clamp system allows one-handed connection without the frustration of threaded locking rings, and many premium connectors feature built-in LED power indicators so boaters can confirm live power at a glance. Products are engineered to CSA and UL standards, and nickel-plated brass contacts are used throughout to resist the corrosion that plagues lesser marine connectors.</p><p>Beyond shore power, Marinco offers an impressive range of marine accessories that keep vessels safe and comfortable. The brand's <a href="/11273-marinco-air-horns-201608">air horns</a> are a staple on boats of all sizes, delivering the kind of authoritative, regulation-compliant signals that can genuinely protect lives on the water. And for boaters who want to keep cabin air fresh without running down their battery bank, Marinco's <a href="/11273-marinco-solar-cabin-vents-202545">solar cabin vents</a> from its trusted Nicro line provide around-the-clock ventilation powered entirely by the sun — and a built-in rechargeable battery when the sun goes down.</p><h3>Why Boaters Choose Marinco</h3><ul><li><strong>OEM Trust:</strong> Major boatbuilders specify Marinco electrical components from the factory, a testament to the brand's reliability standards.</li><li><strong>Standards Leadership:</strong> Active participation on ABYC committees means Marinco products don't just meet standards — they help write them.</li><li><strong>Marine-Grade Engineering:</strong> Every product is designed for salt air, vibration, and moisture, not just adapted from a land-based design.</li><li><strong>Complete System Thinking:</strong> With over 800 electrical products engineered to work together, Marinco makes it easy to build a cohesive, safe onboard electrical system.</li><li><strong>Decades of Refinement:</strong> Over 50 years of feedback from real boaters has shaped every product iteration, from connector geometry to diaphragm materials.</li></ul><p>Whether you're outfitting a new build, upgrading aging shore power hardware, adding a safety horn, or solving a below-decks ventilation problem, Marinco brings proven engineering and category-defining products to every corner of the job.</p>

Part Number

305CRCN
06/01/2036 12:55 AM
Sale Price

$31.34

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

Extend the life and improve the safety of your 30A shore power cord by replacing the boat side plug.

Does the plug on your shore power cord feel loose when inserted into the inlet? Can you see corrosion? Both issues can increase electrical resistance in the shore power cord, creating a potentially hazardous situation. Marinco offers a reliable solution with this replacement locking connector. Color-coded terminals and terminal screws provide a visual guide for connecting your shore power cable to a new end, making installation straightforward even for DIY boaters.

Key Features:

  • Internal self-centering cord clamp provides excellent strain relief
  • Color-coded terminal pockets and screws for easy wiring identification
  • Corrosion-resistant construction for marine environments
  • Dust seal keeps contaminants out of terminals when disconnected
  • NEMA L5-30R locking connection configuration
  • 2-pole, 3-wire conductor design
  • Durable nylon plug body with brass contacts and stainless steel assembly screws
  • UL listed (File E57672) and CSA certified (File 81290_0_000)
  • Backed by five-year manufacturer warranty

This replacement plug offers excellent strain relief and when paired with one of Marinco's weatherproof covers (Model #1873959, sold separately), your shore power cord will look and perform like new. Designed specifically for 30-amp, 125-volt marine shore power applications.

Products specifications

Amperage

30 Amps

Type

Female Connectors

Voltage

125 Volts

Warranty Details

Five Years

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