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
4.3/5
A hardwired EMS with phone monitoring for 30 amp RVs. A good buy while it sells for less than the Gen II version.
- EMSType
- 3,000 JSurge rating
- HardwiredMount
- LifetimeWarranty
Check price at Amazon$226.34
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Newer model: the Hughes Power Watchdog PWD30EPOHW replaces this one (rated 4.1, #6 30 amp). See every Hughes Power Watchdog Gen II generation.
Pros
- Mounted inside the RV, out of reach of thieves
- Cuts power on high or low voltage and wiring faults, then restores it after 90 seconds
- 3,000 joules with a replaceable surge module
- Bluetooth app shows park power from inside
Cons
- Needs a hardwired install
- Replaced by the Gen II hardwired model with Wi-Fi
The Hughes Power Watchdog family
Every Hughes Power Watchdog model we rank, smallest first. Ratings compare each against its own service.
| Model | Type | Rating | Price |
|---|---|---|---|
| Hughes Power Watchdog PWD30 | Surge only | 3.5/5 | $139.99 |
| Hughes Power Watchdog PWD30-EPO | EMS | 4.1/5 | $309.99 |
| Hughes Power Watchdog PWD30-EPO-H (this one) | EMS | 4.3/5 | $226.34 |
| Hughes Power Watchdog PWD50 | Surge only | 3.5/5 | $219.99 |
| Hughes Power Watchdog PWD50-EPO | EMS | 4.3/5 | $339.99 |
| Hughes Power Watchdog PWD50-EPO-H | EMS | 4.4/5 | $329.99 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its service. How we rank explains each one.
Specifications
| Model number | PWD30-EPO-H |
|---|---|
| Protection | |
| Service | 30 A |
| Type | EMS |
| Surge rating | 3,000 J |
| Voltage cutoffs | 104 V / 132 V |
| Miswiring detection | Yes |
| Restart delay | Yes |
| Replaceable surge module | Yes |
| Build | |
| Mount | Hardwired |
| Display | No |
| App | Yes |
| Warranty | Lifetime |
Alternatives in this service
Progressive Industries EMS-PT30X
#3 in 30 ampFull review
A full EMS for 30 amp trailers at a moderate price, backed by a lifetime warranty. Good for anyone who camps at older parks with shaky voltage.
Amazon $135.88$135.88
Hughes Power Watchdog PWD30-EPO
#4 in 30 ampFull review
A full EMS with phone monitoring and a replaceable module for 30 amp RVs. Strong value when it sells below the Gen II price.
Amazon $309.99$309.99
Compare
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