A hardwired 30 amp EMS with a lifetime warranty for about $150. For trailer owners who want theft proof protection.
Amazon $154.97The Southwire Surge Guard 35530 is the better RV surge protector overall, rated 4.2 to 4.1. The Southwire Surge Guard 35530 leads on price. The Southwire Surge Guard 34931 wins on monitoring. The Southwire Surge Guard 35530 costs $146.15 less ($154.97 vs $301.12).
A complete 30 amp EMS with an app and the best warranty terms here. For owners who want everything and don’t mind the price.
Amazon $301.12Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Southwire Surge Guard 35530 for price ($154.97 vs $301.12).
- Choose the Southwire Surge Guard 34931 for monitoring (volts and amps display and app vs volts and amps display).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 30 amp RV surge protector; a clear win is highlighted. How we rank explains each one.
| Factor weight | Southwire Surge Guard 35530 | Southwire Surge Guard 34931 |
|---|---|---|
| Overall rating | 4.2/5 | 4.1/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 85 high and low voltage cutoff, miswiring detection, restart delay |
| Surge rating 10% | 70 2,450 joules | 70 2,450 joules |
| Monitoring 10% | 50 volts and amps display | 100 volts and amps display and app |
| Price 20% | 55 $154.97 | 10 $301.12 |
| Warranty 25% | 100 lifetime warranty | 100 lifetime warranty |
Specifications
| Southwire Surge Guard 35530 | Southwire Surge Guard 34931 | |
|---|---|---|
| Protection | ||
| Service | 30 A | 30 A |
| Type | EMS | EMS |
| Surge rating | 2,450 J | 2,450 J |
| Voltage cutoffs | 102 V / 132 V | 102 V / 132 V |
| Miswiring detection | Yes | Yes |
| Restart delay | Yes | Yes |
| Build | ||
| Mount | Hardwired | Portable |
| Display | Yes | Yes |
| App | No | Yes |
| Weatherproof | - | Yes |
| Lock | - | Yes |
| Warranty | Lifetime | Lifetime |
