Protectores contra sobretensiones para vehículos recreativos

What does an RV surge protector do, and do I need one?

An RV surge protector sits between the campground pedestal and your RV's shore power cord. It absorbs voltage spikes from lightning or grid switching before they reach your converter, air conditioner, refrigerator control board, and other electronics. Most units also check the pedestal wiring for faults such as reversed polarity, open ground, or open neutral before you plug in. Campground power quality varies, and replacing one failed control board or converter usually costs more than the surge protector, so most RV owners treat it as standard equipment.

Do I need a 30 amp or 50 amp RV surge protector?

Match the surge protector to your RV's shore power cord. A 30 amp RV has a three-prong TT-30 plug. A 50 amp RV has a four-prong 14-50 plug. A 30 amp unit will not protect a 50 amp RV at full capacity. If you plug a 30 amp RV into a 50 amp pedestal with a dogbone adapter, use a 30 amp surge protector at the pedestal end. You can find the correct plug configurations in our RV detachable adapters collection. Before ordering, check the plug on the end of your power cord to confirm which amperage you need.

What is the best 30 amp RV surge protector with EMS?

The right choice depends on the protection you need. A basic surge protector absorbs spikes and reports wiring faults, but it will not shut off power during a voltage problem. An EMS (electrical management system) surge protector monitors voltage continuously. It disconnects your RV when the voltage drops too low or climbs too high, or when the pedestal develops a fault after you are already connected. It then reconnects after a time delay that protects your air conditioner compressor. Low voltage at busy campgrounds causes much of the damage to AC compressors, so an EMS unit is the stronger option for most 30 amp RVs. The Southwire Surge Guard RV surge protectors collection includes 30 amp EMS models in portable and hardwired versions.

What should I compare when choosing a 50 amp RV surge protector?

Compare four specs. Joule rating shows how much surge energy the unit can absorb, and a higher number gives more headroom. Next, check whether the unit has full EMS shutoff for low and high voltage or only basic surge protection. Then decide between a portable unit and a hardwired installation. Finally, look at how the unit reports status. Many 50 amp units have a display that shows live voltage and amperage on both legs. Models in the Bluetooth RV surge protectors collection send that data and fault history to your phone, so you can check power from inside the coach.

Should I buy a portable or hardwired RV surge protector?

A portable surge protector plugs into the campground pedestal and needs no installation. It also moves with you if you change RVs. The tradeoff is theft risk, so look for a model with a lock bracket. A hardwired surge protector mounts inside the RV between the shore power inlet and the transfer switch or distribution panel. It protects against theft and weather, but installation requires basic electrical work. If you are unsure which unit fits your power setup, text or call 817-984-1852 with your RV's amperage and our team will help you choose the right surge protector. Orders over $100 ship free.