SmartPlug

SmartPlug: Redefining Shore Power Safety for Boats and RVs

Founded in 2007 and headquartered in Seattle, Washington, SmartPlug set out to solve one of the most overlooked hazards in boating and RV life: the inherently flawed twist-lock shore power connector. Traditional NEMA twist-lock designs rely on a small contact surface area and a fragile locking ring — a combination that invites loose connections, accelerated corrosion, and dangerous overheating at the dock. SmartPlug was engineered from the ground up to eliminate these failure points entirely.

Unlike traditional twist-lock connectors, SmartPlug systems use a straight-in design that delivers a more secure electrical connection, reduced overheating, and improved performance at the dock. The plug inserts directly and symmetrically into the inlet, completely eliminating the awkward twisting motion and delicate locking rings required by traditional shore power configurations — allowing easy, blind alignment and trouble-free connection or disconnection in low light, restricted spaces, or rolling vessel conditions.

Built with Marine-Grade Quality

SmartPlug doesn't just improve the connection geometry — it raises the bar on materials as well. All external metals are Marine-Grade 316 Stainless Steel, the electrical pins are nickel-plated brass for maximum conductivity, and plastics are UV and heat resistant Valox 553U resins made right here in the USA. Built with these marine-grade materials, SmartPlug inlets, cords, and connectors are ideal for both freshwater and saltwater environments.

SmartPlug shore power products feature solid pin contact, multi-point locking, and integrated thermal protection, making them a trusted upgrade for boaters who demand safety and reliability. The number one cause of shore power failure and fires is not electrical shorting, but rather overheating caused by poor electrical conductivity — and SmartPlug's expanded contact surface area and robust mechanical lock directly address both root causes.

A Full Ecosystem of Shore Power Solutions

SmartPlug carries inlets, connectors, combo kits, shore power cords, data ports, accessories, ELCI sensors and breakers, and service kits. Whether you are outfitting a new vessel, upgrading an aging marina pedestal, or replacing a worn cordset on your RV, there is a SmartPlug solution designed to fit your application.

At the heart of the lineup are the Shorepower Accessories that cover everything from inlets and connectors to combo kits, service kits, and data port faceplates — giving boat and RV owners a complete, cohesive system rather than a patchwork of incompatible components. For situations that require bridging between different plug standards or amperage configurations, SmartPlug's Shore Power Adaptors — including pigtails and dogbones — make it straightforward to connect in virtually any marina or campground environment without sacrificing safety or conductivity.

Whether you're docking your boat or setting up your RV, SmartPlug makes power connections straightforward and stress-free. For anyone serious about electrical safety on the water or at the campsite, SmartPlug represents the modern standard in shore power connectivity.