Southwire Surge Guard 35530
#2 in 30 ampFull review
A hardwired 30 amp EMS with a lifetime warranty for about $150. For trailer owners who want theft proof protection.
Amazon $154.97$154.97
The Southwire Surge Guard 35530 rates 4.2 among 30 amp RV surge protectors; the Progressive Industries SSP-50XL rates 2.4 among 50 amp ones. The Progressive Industries SSP-50XL costs $80.79 less ($74.18 vs $154.97).
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 35530 | Progressive Industries SSP-50XL |
|---|---|---|
| Overall rating | 4.2/5 | 2.4/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 0 surge only |
| Surge rating 10% | 70 2,450 joules | 45 1,650 joules |
| Monitoring 10% | 50 volts and amps display | 0 indicator lights only |
| Price 20% | 55 $154.97 | 100 $74.18 |
| Warranty 25% | 100 lifetime warranty | 0 warranty not published, scored as none |
Specifications
| Southwire Surge Guard 35530 | Progressive Industries SSP-50XL | |
|---|---|---|
| Protection | ||
| Service | 30 A | 50 A |
| Type | EMS | Surge only |
| Surge rating | 2,450 J | 1,650 J |
| Voltage cutoffs | 102 V / 132 V | - |
| Miswiring detection | Yes | - |
| Restart delay | Yes | - |
| Build | ||
| Mount | Hardwired | Portable |
| Display | Yes | No |
| App | No | No |
| Weatherproof | - | Yes |
| Warranty | Lifetime | - |
| Released | - | 2016-07-20 |