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Shopcorp 50A to 30A Marine Shore Power Adapter Cord. SS2-50P to L5-30R, 1.5FT Heavy-Duty STW Cable, UL/ETL Certified

Shopcorp 50A to 30A Marine Shore Power Adapter Cord. SS2-50P to L5-30R, 2 FT Heavy-Duty STW Cable, UL/ETL Certified

4.4
Rated 4.4 out of 5 stars
8 Reviews
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$43.99 - $43.99
$43.99
$43.99 - $43.99
$43.99

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Technical Specifications

This marine power adapter cord is engineered for safe shore-to-RV/marine power conversion, using high-grade materials and a heavy-duty construction suitable for long-term coastal use.

Specifications:
- Type: Marine/RV Shore Power Adapter Cord
- Input Plug: SS2-50P Male (50 Amp)
- Output Connector: L5-30R Female (30 Amp)
- Voltage Rating: 125/250V AC
- Power Capacity: Up to 12,500W
- Cable Type: STW 10AWG, 3-wire, rated 300V
- Temperature Resistance: 60°C–105°C
- Contacts: Solid brass, corrosion-resistant
- Certifications: UL & ETL Listed
- Construction: PVC insulated, molded strain relief
- Length: 2 FT
- Applications: Marine shore power, RV hookups, boat docks, generators, power pedestals

About the Product

This Shopcorp marine-grade adapter converts a 50 Amp SS2-50P male plug to a 30 Amp L5-30R female outlet, delivering a reliable and stable power connection for boats, RVs, docks, generators, and shore stations. Engineered for harsh marine environments, it ensures efficient and secure electrical transfer.

Built with Heavy-Duty STW 10AWG Cable
Featuring premium STW 10AWG wiring, this adapter withstands demanding outdoor conditions, heat, moisture, and abrasion. Rated for 125/250V and 12,500W, it provides consistent performance for marine and recreational systems requiring dependable shore power.

Marine-Grade Safety & High-Quality Materials
Constructed with solid brass contacts for superior conductivity and corrosion resistance. The cable includes PVC insulation, molded strain relief, and ergonomic grips for safe handling in wet or coastal environments. Fully UL & ETL listed for electrical safety and long-term durability.

Ideal for Marine, RV, and Generator Power Systems
Whether upgrading a dock connection, powering an RV at a campsite, or adapting a generator plug, this 50A to 30A adapter ensures compatibility, secure locking connection, and efficient power delivery.

- Converts 50 Amp shore power (SS2-50P) to a 30 Amp outlet (L5-30R)
- Ideal for marine docks, RV parks, generators, and coastal electrical systems
- Heavy-duty STW 10AWG cable offers superior heat resistance and flexibility
- Brass contacts improve durability and minimize corrosion in marine use
- UL & ETL certified to meet safety and performance standards
- Weather-resistant construction ideal for outdoor and wet conditions
- Designed for stable, reliable electrical transfer up to 12,500 watts

See All Contactors Cut Sheets

SKU B0G4SCXBC1

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4.4
Rated 4.4 out of 5 stars
Based on 8 reviews
100%would recommend this product
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8 reviews
  • Joana B.
    I recommend this product
    Rated 4 out of 5 stars
    9 months ago
    Durable and Well Thought Out Design

    After several uses in an outdoor coastal environment, this adapter has held up very well. There are no signs of wear on the cable or connectors. The overall construction suggests long service life, and I would feel comfortable leaving it installed during regular shore power use.

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  • Michael L.
    I recommend this product
    Rated 4 out of 5 stars
    9 months ago
    Great Marine Adapter

    As someone familiar with electrical installations, I can say this adapter feels like a professional-grade product. The insulation is thick, the connectors are well-aligned, and everything fits together cleanly. It is well suited for marine, RV, or generator applications where reliability matters.

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  • Matthew C.
    I recommend this product
    Rated 5 out of 5 stars
    9 months ago
    Works Exactly as Intended

    This adapter does exactly what it is designed to do. I have used it to step down from a 50A shore power source to a 30A connection with no issues. Voltage remains stable, and the cable stays cool during operation. It inspires confidence during extended use.

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  • Chris R.
    I recommend this product
    Rated 4 out of 5 stars
    9 months ago
    Clean Fit and Secure Locking Design

    I installed this adapter at a boat dock where safety is critical. Both ends connect smoothly, and the locking mechanism holds firmly even when the cable is slightly tensioned. The molded grips make it easy to connect and disconnect, even with wet hands.

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  • Paula A.
    I recommend this product
    Rated 5 out of 5 stars
    9 months ago
    Heavy-Duty Cable You Can Trust

    The first thing I noticed was the quality of the STW 10AWG cable. It is thick, durable, and still flexible enough to handle easily. I appreciate the short 1.5-foot length, which keeps the setup clean and avoids unnecessary cable loops. This is clearly designed for outdoor and marine environments.

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