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 3.3. The Southwire Surge Guard 35530 leads on protection. The Southwire Surge Guard 35530 costs $15.02 less ($154.97 vs $169.99).
Hughes Power Watchdog PWD30W
#10 in 30 ampFull review
A connected surge protector for 30 amp RVs that you can watch from anywhere. Buy the auto shutoff version if you want an EMS.
Amazon $169.99$169.99
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 protection (high and low voltage cutoff, miswiring detection, restart delay vs replaceable surge module).
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 PWD30W |
|---|---|---|
| Overall rating | 4.2/5 | 3.3/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 15 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 | 49 $169.99 |
| Warranty 25% | 100 lifetime warranty | 100 lifetime warranty |
Specifications
| Southwire Surge Guard 35530 | Hughes Power Watchdog PWD30W | |
|---|---|---|
| Protection | ||
| Service | 30 A | 30 A |
| Type | EMS | Surge only |
| Surge rating | 2,450 J | - |
| Voltage cutoffs | 102 V / 132 V | - |
| Miswiring detection | Yes | No |
| Restart delay | Yes | No |
| 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 |