Southwire Surge Guard 34931
#5 in 30 ampFull review
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 $301.12$301.12
The Southwire Surge Guard 34931 is the better RV surge protector overall, rated 4.1 to 3.2. The Southwire Surge Guard 34931 leads on protection, monitoring and surge rating. The Southwire Surge Guard 44280 wins on price. The Southwire Surge Guard 44280 costs $203.43 less ($97.69 vs $301.12).
Southwire Surge Guard 44280
#11 in 30 ampFull review
A well built surge protector for 30 amp trailers with extra diagnostics and a lifetime warranty. Pick an EMS instead if you camp where voltage sags.
Amazon $97.69$97.69
Prices 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 34931 for protection (high and low voltage cutoff, miswiring detection, restart delay vs surge only), monitoring (volts and amps display and app vs indicator lights only) and surge rating (2,450 joules vs 2,100 joules).
- Choose the Southwire Surge Guard 44280 for price ($97.69 vs $301.12).
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 34931 | Southwire Surge Guard 44280 |
|---|---|---|
| Overall rating | 4.1/5 | 3.2/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 0 surge only |
| Surge rating 10% | 70 2,450 joules | 60 2,100 joules |
| Monitoring 10% | 100 volts and amps display and app | 0 indicator lights only |
| Price 20% | 10 $301.12 | 86 $97.69 |
| Warranty 25% | 100 lifetime warranty | 100 lifetime warranty |
Specifications
| Southwire Surge Guard 34931 | Southwire Surge Guard 44280 | |
|---|---|---|
| Protection | ||
| Service | 30 A | 30 A |
| Type | EMS | Surge only |
| Surge rating | 2,450 J | 2,100 J |
| Voltage cutoffs | 102 V / 132 V | - |
| Miswiring detection | Yes | - |
| Restart delay | Yes | - |
| Build | ||
| Mount | Portable | Portable |
| Display | Yes | No |
| App | Yes | No |
| Weatherproof | Yes | Yes |
| Lock | Yes | Yes |
| Warranty | Lifetime | Lifetime |