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 is the better RV surge protector overall, rated 4.2 to 4.0. The Southwire Surge Guard 35530 leads on price. The Hughes Power Watchdog PWD30EPOW wins on protection. The Southwire Surge Guard 35530 costs $155.02 less ($154.97 vs $309.99).
Hughes Power Watchdog PWD30EPOW
#7 in 30 ampFull review
The most connected portable EMS for 30 amp RVs, with remote shutoff and a replaceable module. For owners who leave the RV plugged in while away.
Amazon $309.99$309.99
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 35530 for price ($154.97 vs $309.99).
- Choose the Hughes Power Watchdog PWD30EPOW for protection (high and low voltage cutoff, miswiring detection, restart delay, replaceable surge module vs high and low voltage cutoff, miswiring detection, restart delay).
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 | Hughes Power Watchdog PWD30EPOW |
|---|---|---|
| Overall rating | 4.2/5 | 4.0/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 100 high and low voltage cutoff, miswiring detection, restart delay, replaceable surge module |
| Surge rating 10% | 70 2,450 joules | 50 surge rating not published (neutral score used) |
| Monitoring 10% | 50 volts and amps display | 50 app |
| Price 20% | 55 $154.97 | 8 $309.99 |
| Warranty 25% | 100 lifetime warranty | 100 lifetime warranty |
Specifications
| Southwire Surge Guard 35530 | Hughes Power Watchdog PWD30EPOW | |
|---|---|---|
| Protection | ||
| Service | 30 A | 30 A |
| Type | EMS | EMS |
| Surge rating | 2,450 J | - |
| Voltage cutoffs | 102 V / 132 V | 104 V / 132 V |
| Miswiring detection | Yes | Yes |
| Restart delay | Yes | Yes |
| Replaceable surge module | - | Yes |
| Build | ||
| Mount | Hardwired | Portable |
| Display | Yes | No |
| App | No | Yes |
| Weatherproof | - | Yes |
| Lock | - | Yes |
| Warranty | Lifetime | Lifetime |
| Released | - | 2025-02-01 |