Hughes Power Watchdog PWD50-EPO-H
#1 in 50 ampFull review
A hardwired EMS with phone monitoring for 50 amp RVs. A good buy while it sells for less than the Gen II version.
Amazon $329.99$329.99
4.3/5
A full EMS with phone monitoring and a replaceable module for 50 amp RVs. Strong value when it sells below the Gen II price.
- EMSType
- 6,100 JSurge rating
- PortableMount
- LifetimeWarranty
Check price at Amazon$339.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Newer model: the Hughes Power Watchdog PWD50EPOW replaces this one (rated 4.1, #5 50 amp). See every Hughes Power Watchdog Gen II generation.
Pros
- Cuts power below 104 V or above 132 V and on wiring faults, then restores it after 90 seconds
- 6,100 joules with a replaceable surge module
- Phone app shows live volts and amps and logs faults
- Limited lifetime warranty
Cons
- Costs more than a Progressive EMS with similar protection
- Replaced by the Gen II 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 | EMS | 4.3/5 | $226.34 |
| Hughes Power Watchdog PWD50 | Surge only | 3.5/5 | $219.99 |
| Hughes Power Watchdog PWD50-EPO (this one) | 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 | PWD50-EPO |
|---|---|
| Protection | |
| Service | 50 A |
| Type | EMS |
| Surge rating | 6,100 J |
| Voltage cutoffs | 104 V / 132 V |
| Miswiring detection | Yes |
| Restart delay | Yes |
| Replaceable surge module | Yes |
| Build | |
| Mount | Portable |
| Display | No |
| App | Yes |
| Weatherproof | Yes |
| Warranty | Lifetime |
| Released | 2019-01-04 |
Alternatives in this service
Southwire Surge Guard 34951
#3 in 50 ampFull review
A thorough 50 amp EMS with a long warranty for big coaches. Worth the premium mainly for the extra neutral protection and the warranty.
Nomadic Supply $399.95$399.95
Hughes Power Watchdog PWD50EPOHW
#4 in 50 ampFull review
A connected hardwired EMS for 50 amp RVs that you can monitor and switch from anywhere. For owners who want theft proof protection with remote control.
Power Watchdog $399.99$399.99
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