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
The Southwire Surge Guard 44280 rates 3.2 among 30 amp RV surge protectors; the Progressive Industries SSP-50XL rates 2.4 among 50 amp ones. The Progressive Industries SSP-50XL costs $23.51 less ($74.18 vs $97.69).
Progressive Industries SSP-50XL
#13 in 50 ampFull review
A budget surge protector for 50 amp coaches when an EMS is out of reach. It guards against spikes but not against low voltage.
Amazon $74.18$74.18
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.
Scores side by side
These two sit in different service classes (30 amp and 50 amp), and each is scored against the reference points for its own class, so a rating says how well each does among its own service peers. How we rank explains each factor.
| Factor weight | Southwire Surge Guard 44280 | Progressive Industries SSP-50XL |
|---|---|---|
| Overall rating | 3.2/5 | 2.4/5 |
| Protection 35% | 0 surge only | 0 surge only |
| Surge rating 10% | 60 2,100 joules | 45 1,650 joules |
| Monitoring 10% | 0 indicator lights only | 0 indicator lights only |
| Price 20% | 86 $97.69 | 100 $74.18 |
| Warranty 25% | 100 lifetime warranty | 0 warranty not published, scored as none |
Specifications
| Southwire Surge Guard 44280 | Progressive Industries SSP-50XL | |
|---|---|---|
| Protection | ||
| Service | 30 A | 50 A |
| Type | Surge only | Surge only |
| Surge rating | 2,100 J | 1,650 J |
| Build | ||
| Mount | Portable | Portable |
| Display | No | No |
| App | No | No |
| Weatherproof | Yes | Yes |
| Lock | Yes | - |
| Warranty | Lifetime | - |
| Released | - | 2016-07-20 |