Replacing an RV's detachable shore-power connector? Check the vehicle inlet and the cord's female vehicle-end connector as a matched pair. SmartPlug's straight-in, side-locking connection is different from a traditional Marinco twist-lock connector with a threaded or Easy Lock ring. This reference helps distinguish 30A and 50A parts, inlet-only components, combo kits and complete cordsets.
Identify both ends of the shore-power cord
Only the correct source-end plug goes into the pedestal. The cord's other end must match the RV inlet's family and electrical rating.
30A SmartPlug — 125V device rating
50A SmartPlug — 125/250V device rating
SmartPlug and traditional Marinco connections are different
SmartPlug connection
The female cord end pushes directly into its proprietary vehicle inlet. Side levers hold the connector; the system uses a matching contact and gasket arrangement. Choose BF30 with a compatible 30A SmartPlug inlet, not by appearance alone.
Traditional twist-lock connection
The Marinco cord connector uses a different mating face and a threaded or Easy Lock retaining cover/ring on a compatible inlet. A traditional Marinco 305CRV or 6364CRV is not a direct plug-in replacement for a SmartPlug female connector.
30A SmartPlug kit and cord-end connector
Use the complete MPN to decide whether you need the vehicle fitting, the cord end, or both. SmartPlug's 30A North American RV connector family is rated 125V. Verify the physical RV cutout and the existing power cord before selecting retrofit components.
50A SmartPlug: inlet-only or combo kit?
SmartPlug's 50A North American system is rated 125/250V and uses its own 50A mating profile. BM50PW provides a white inlet, while B50ASSY identifies the stainless combo kit. These are different product packages.
What about complete cords and older locking connectors?
Match the source end as carefully as the vehicle end: 15A household plugs, 30A straight-blade RV plugs and 30A locking shore-power plugs may all be described casually as 'shore power.' A 15A plug feeding a 30A SmartPlug inlet does not provide 30A of supply power. The exact park-side connection on a SmartPlug cordset must be checked by part number.
If the existing inlet is a traditional Marinco-style locking connection, these are separate replacement connector families. Changing between Marinco and SmartPlug requires a correctly matched inlet and cord-end arrangement, not simply an interchangeable plug.
Related RV power and protection diagrams
For product-specific retrofit instructions and wiring specifications, refer to the exact component maker's SmartPlug installation resources and have shore-power connection work performed by qualified electrical service personnel as applicable.