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
3.1/5
A long running hardwired EMS for 30 amp trailers. For owners who want protection that is always connected and can’t walk off the pedestal.
- EMSType
- 1,790 JSurge rating
- HardwiredMount
Check price at Amazon$151.31
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Mounted inside the trailer, so there is nothing to steal at the pedestal
- Cuts power on high or low voltage and miswired pedestals
- Protection is always on, with nothing to remember to plug in
Cons
- Needs wiring into the shore power line, a job for a confident DIYer or a dealer
- No app; the display sits wherever the unit is mounted
The Progressive Industries EMS-HW family
Every Progressive Industries EMS-HW model we rank, smallest first. Ratings compare each against its own service.
| Model | Type | Rating | Price |
|---|---|---|---|
| Progressive Industries EMS-HW30C (this one) | EMS | 3.1/5 | $151.31 |
| Progressive Industries EMS-HW50C | EMS | 3.3/5 | $188.99 |
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 | EMS-HW30C |
|---|---|
| Protection | |
| Service | 30 A |
| Type | EMS |
| Surge rating | 1,790 J |
| Miswiring detection | Yes |
| Build | |
| Mount | Hardwired |
| Display | Yes |
| App | No |
| Released | 2009-10-26 |
Alternatives in this service
Southwire Surge Guard 44280
#11 in 30 ampFull review
A well built surge protector for 30 amp trailers with extra diagnostics and a lifetime warranty. Pick an EMS instead if you camp where voltage sags.
Amazon $97.69$97.69
Camco Power Grip 30A Circuit Analyzer
#13 in 30 ampFull review
A basic surge and wiring check built into a short 30 amp cord. Fine for occasional campers on a tight budget.
Amazon $54.99$54.99
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