Progressive Industries EMS-PT50X
#7 in 50 ampFull review
A proven portable EMS for 50 amp coaches that does the whole job without an app. A good pick for owners who want full protection for about $200.
Camping World $199.99$199.99
3.4/5
The best surge rating per dollar among 50 amp protectors here. A good choice when the budget won’t stretch to an EMS.
- Surge onlyType
- 4,200 JSurge rating
- PortableMount
- LifetimeWarranty
Check price at Amazon$82.53
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 4,200 joules for about $80, a high rating for the money
- Lifetime warranty that also covers connected equipment
- Lights check the pedestal wiring before you connect
Cons
- No voltage cutoff, so low park voltage still reaches the coach
- Lock hasp is extra
The Southwire Surge Guard Portable family
Every Southwire Surge Guard Portable model we rank, smallest first. Ratings compare each against its own service.
| Model | Type | Rating | Price |
|---|---|---|---|
| Southwire Surge Guard 44260 | Surge only | 3.3/5 | $85.63 |
| Southwire Surge Guard 44270 (this one) | Surge only | 3.4/5 | $82.53 |
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 | 44270 |
|---|---|
| Protection | |
| Service | 50 A |
| Type | Surge only |
| Surge rating | 4,200 J |
| Miswiring detection | No |
| Restart delay | No |
| Build | |
| Mount | Portable |
| Display | No |
| App | No |
| Lock | No |
| Warranty | Lifetime |
Alternatives in this service
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
Southwire Surge Guard 44290
#10 in 50 ampFull review
A high capacity 50 amp surge protector with more diagnostics than its price suggests. For coaches that don’t need voltage cutoff.
Amazon $77.99$77.99
Compare
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