Marinco S30-30 (Old 84A) Straight Adapter Dock Side Male 20A/125V Locking to Boat Side Female 30A/125V Locking
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Marinco’s S30-30 (Old 84A) straight shore power adapter is a one-piece dock-side male (20A/125V locking) to boat-side female (30A/125V locking) connection. It features a built-in LED power indicator and a 5-year warranty—designed for use in a dry, enclosed location (not for wet locations).
Key Features
- Dock side male plug: 20A/125V locking
- Boat side female connector: 30A/125V locking
- Straight adapter design (one-piece)
- Built-in LED power indicator
- Marine UL® listed
- Use only in an enclosed, dry location (not recommended for wet locations)
- 5-year warranty
Intended Use
- Shore power cord/adapter connections between a dock-side locking receptacle and a boat inlet/cordset
- When stepping between a 20A/125V locking dock connection and a 30A/125V locking boat inlet/cordset (dry, enclosed use)
Product Details
- Adapter type/location: Straight adapter (dock side male to boat side female)
- Dock side connection: Male plug, 20A/125V locking
- Boat side connection: Female connector, 30A/125V locking
- Power indicator: Built-in LED power indicator
- Recommended use environment: Enclosed, dry location (not recommended for wet locations)
- Warranty: 5 year warranty
- Brand/Series reference: Marinco S30-30 (Old 84A)
- SKU: 69-S2030
Parts Desk Insights
Best Use Case: Use this straight adapter when you need to mate a 20A/125V locking dock connection to a 30A/125V locking boat inlet/cordset, while keeping the connection in a dry, enclosed area.
Common Issues: Most common issue with this style of adapter is environment-related—because it does not include sealing collars, it should not be used where it will be exposed to wet conditions. Also confirm the locking male/female ends match your dock receptacle and boat inlet ratings before connecting.
Related Products & Accessories
- Browse Shore Power Adapters - Use the Shore Power collection to find matching straight adapters, pigtail adapters, and cordsets for your dock/boat amperage and inlet style.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.