Hughes Power Watchdog PWD30-EPO-H
#1 in 30 ampFull review
A hardwired EMS with phone monitoring for 30 amp RVs. A good buy while it sells for less than the Gen II version.
Amazon $226.34$226.34
The Hughes Power Watchdog PWD30-EPO-H is the better RV surge protector overall, rated 4.3 to 4.1. The Hughes Power Watchdog PWD30-EPO-H leads on protection, price and surge rating. The Southwire Surge Guard 34931 wins on monitoring. The Hughes Power Watchdog PWD30-EPO-H costs $74.78 less ($226.34 vs $301.12).
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
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 Hughes Power Watchdog PWD30-EPO-H for protection (high and low voltage cutoff, miswiring detection, restart delay, replaceable surge module vs high and low voltage cutoff, miswiring detection, restart delay), price ($226.34 vs $301.12) and surge rating (3,000 joules vs 2,450 joules).
- Choose the Southwire Surge Guard 34931 for monitoring (volts and amps display and app vs app).
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 | Hughes Power Watchdog PWD30-EPO-H | Southwire Surge Guard 34931 |
|---|---|---|
| Overall rating | 4.3/5 | 4.1/5 |
| Protection 35% | 100 high and low voltage cutoff, miswiring detection, restart delay, replaceable surge module | 85 high and low voltage cutoff, miswiring detection, restart delay |
| Surge rating 10% | 82 3,000 joules | 70 2,450 joules |
| Monitoring 10% | 50 app | 100 volts and amps display and app |
| Price 20% | 30 $226.34 | 10 $301.12 |
| Warranty 25% | 100 lifetime warranty | 100 lifetime warranty |
Specifications
| Hughes Power Watchdog PWD30-EPO-H | Southwire Surge Guard 34931 | |
|---|---|---|
| Protection | ||
| Service | 30 A | 30 A |
| Type | EMS | EMS |
| Surge rating | 3,000 J | 2,450 J |
| Voltage cutoffs | 104 V / 132 V | 102 V / 132 V |
| Miswiring detection | Yes | Yes |
| Restart delay | Yes | Yes |
| Replaceable surge module | Yes | - |
| Build | ||
| Mount | Hardwired | Portable |
| Display | No | Yes |
| App | Yes | Yes |
| Weatherproof | - | Yes |
| Lock | - | Yes |
| Warranty | Lifetime | Lifetime |