An RV surge protector adapter sits between the campground pedestal and the coach cord, so the two connectors you need and the surge protection arrive as one part. The range covers sixteen combinations: 30 amp and 50 amp straight blade, and the L5-30 and L14-30 locking connectors used on boats, generators and transfer switch connections.
All sixteen are built to UL 817 with UL and cULus listing, and the materials are RoHS and REACH compliant. Six of them add LED indicator lights and a weather cover over the socket.
The trailer inlet decides most of the order. A 30 amp trailer has a TT-30R inlet and needs an adapter with a TT-30R socket; a 50 amp coach has a 14-50R inlet and needs a 14-50R socket. The plug end has to match what the site offers: a TT-30R at a 30 amp site, a 14-50R at a 50 amp site, and an L5-30R or L14-30R at a marina, shop or generator inlet.
Two limits are worth knowing before you buy. A 30 amp pedestal supplies a single 125V leg, so a 50 amp coach on a step-down adapter runs its 120V circuits only, never its 240V appliances. And a 30 amp trailer on 50 amp service is protected by its own 30 amp main breaker, because the pedestal breaker is sized for 50 amp.
The 30 amp TT-30P to TT-30R adapter comes in three shells, coded A, B and C. They are the same circuit and the same certification in different housings, and orders are usually placed against a shell letter because of how the adapter sits at the pedestal or packs in the box. Six of the sixteen add an LED indicator panel and a cover that closes over the socket when the cord is unplugged.
Samples are available for any model in the range. Production runs start at 200 to 1000 pieces, with 15 to 20 working days after the order and artwork are confirmed, and private label work covers the shell you choose, the label and the packing. The electrical part does not change with the badge on it.
Background on the connectors is in the NEMA twist locking power cord guide and the IP44 waterproof power cord guide.
Some NEMA Configurations, Use for RV, Generator, Shore Power, EV, Welder, Dryer Power Extension Adapter Cord Sets
Common questions about RV surge protector adapters, 30 amp and 50 amp
It does two jobs in one part. It changes one NEMA connector to another, and it puts surge protection in the middle of that joint so a spike on the pedestal is dealt with before it reaches the coach cord. All sixteen models in this range are built to the UL 817 cord set standard with UL and cULus listing.
Start with the trailer inlet. A 30 amp trailer has a NEMA TT-30R inlet, a 50 amp coach has a NEMA 14-50R inlet. Then look at what the site offers: 30 amp sites have a NEMA TT-30R receptacle, 50 amp sites a NEMA 14-50R, marinas and shops often use L5-30 or L14-30 locking outlets. Pick the model that joins those two ends, or read the table above and match the plug and socket.
The 30 amp to 50 amp adapter, or the same adapter with the indicator and cover. The NEMA TT-30P plug goes into the park receptacle and the NEMA 14-50R socket takes the coach cord. Available power stays at 125V and up to 30A, so 240V appliances will not run from that hookup.
The 50 amp to 30 amp adapter, or the same adapter with the indicator and cover. The NEMA 14-50P plug fits the 50 amp receptacle and the NEMA TT-30R socket takes the trailer cord. The trailer keeps working exactly as it does on a 30 amp site, and its own 30 amp main breaker still protects the cord.
Six of the sixteen carry the indicator and cover: the 30 amp to 50 amp, the 50 amp to 30 amp, the NEMA TT-30P to NEMA L5-30R, the NEMA L5-30P to NEMA TT-30R, the NEMA TT-30P to NEMA L14-30R and the NEMA L14-30P to NEMA TT-30R adapters. They add LED indicator lights on the housing and a weather cover over the socket. The plug, the socket, the current and the voltage are the same as the model without the L, so the choice comes down to whether you want the indicator and cover.
No joule figure is printed in the catalogue for this range. The protection element is selected with the order, so if you are buying against a stated figure, send it with your enquiry and we will confirm what the build uses before you commit. Retail buyers should ask their supplier which figure applies to the part they stock.
Yes. The range is built to UL 817, the cord set standard, and carries UL and cULus listing, so the same part can be sold in the United States and Canada. Materials are RoHS and REACH compliant. Certificates can be sent with the quotation for any model code in the range.
Yes, where the connectors match. The L5-30 and L14-30 models exist for locking shore inlets, marina outlets, generator inlets and transfer switches. Two things to check first: the outlet must be 125V where the model expects 125V, and a load that needs genuine 240V will not run from a single 30 amp 125V supply.
Samples are available for any model in the range. Production runs start at 200 to 1000 pieces depending on the build, with 15 to 20 working days after the order and artwork are confirmed. Private label work covers the shell you choose, the label and the packing, and the electrical part stays the same.
