Hughes Power Watchdog PWD50
#8 in 50 ampFull review
A surge protector with phone monitoring and a replaceable module for 50 amp RVs. It suits owners who want to watch park power but don’t need automatic shutoff.
Amazon $219.99$219.99
3.4/5
A high capacity 50 amp surge protector with more diagnostics than its price suggests. For coaches that don’t need voltage cutoff.
- Surge onlyType
- 4,200 JSurge rating
- PortableMount
- LifetimeWarranty
Check price at Amazon$77.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 4,200 joules and a lifetime warranty for under $80
- Shows a missing leg and an overheating plug, faults cheaper units miss
- Lock ring on the cord
Cons
- No voltage cutoff
- Amazon stock is from a third party seller and limited
The Southwire Surge Guard with Lock Ring family
Every Southwire Surge Guard with Lock Ring model we rank, smallest first. Ratings compare each against its own service.
| Model | Type | Rating | Price |
|---|---|---|---|
| Southwire Surge Guard 44280 | Surge only | 3.2/5 | $97.69 |
| Southwire Surge Guard 44290 (this one) | Surge only | 3.4/5 | $77.99 |
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 | 44290 |
|---|---|
| Protection | |
| Service | 50 A |
| Type | Surge only |
| Surge rating | 4,200 J |
| Build | |
| Mount | Portable |
| Display | No |
| App | No |
| Lock | Yes |
| Warranty | Lifetime |
Alternatives in this service
Southwire Surge Guard 44270
#9 in 50 ampFull review
The best surge rating per dollar among 50 amp protectors here. A good choice when the budget won’t stretch to an EMS.
Amazon $82.53$82.53
Progressive Industries EMS-HW50C
#11 in 50 ampFull review
The standard hardwired EMS for 50 amp coaches at under $200. Best for owners who are happy to install it once and forget it.
Amazon $188.99$188.99
Compare
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