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
The Southwire Surge Guard 34951 is the better RV surge protector overall, rated 4.3 to 3.5. The Southwire Surge Guard 34951 leads on monitoring. The Progressive Industries EMS-PT50X wins on price. The Progressive Industries EMS-PT50X costs $199.96 less ($199.99 vs $399.95).
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
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Southwire Surge Guard 34951 for monitoring (volts and amps display and app vs volts and amps display).
- Choose the Progressive Industries EMS-PT50X for price ($199.99 vs $399.95).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 50 amp RV surge protector; a clear win is highlighted. How we rank explains each one.
| Factor weight | Southwire Surge Guard 34951 | Progressive Industries EMS-PT50X |
|---|---|---|
| Overall rating | 4.3/5 | 3.5/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 85 high and low voltage cutoff, miswiring detection, restart delay |
| Surge rating 10% | 100 4,200 joules | 93 3,580 joules |
| Monitoring 10% | 100 volts and amps display and app | 50 volts and amps display |
| Price 20% | 21 $399.95 | 66 $199.99 |
| Warranty 25% | 100 lifetime warranty | 0 warranty not published, scored as none |
Specifications
| Southwire Surge Guard 34951 | Progressive Industries EMS-PT50X | |
|---|---|---|
| Protection | ||
| Service | 50 A | 50 A |
| Type | EMS | EMS |
| Surge rating | 4,200 J | 3,580 J |
| Voltage cutoffs | 102 V / 132 V | - |
| Miswiring detection | Yes | Yes |
| Restart delay | Yes | Yes |
| Build | ||
| Mount | Portable | Portable |
| Display | Yes | Yes |
| App | Yes | No |
| Weatherproof | Yes | Yes |
| Lock | Yes | Yes |
| Warranty | Lifetime | - |
| Released | - | 2017-08-23 |