Progressive Industries EMS-PT30X
#3 in 30 ampFull review
A full EMS for 30 amp trailers at a moderate price, backed by a lifetime warranty. Good for anyone who camps at older parks with shaky voltage.
Amazon $135.88$135.88
The Progressive Industries EMS-PT30X is the better RV surge protector overall, rated 4.2 to 3.2. The Progressive Industries EMS-PT30X leads on protection and monitoring. The Southwire Surge Guard 44280 wins on price and surge rating. The Southwire Surge Guard 44280 costs $38.19 less ($97.69 vs $135.88).
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
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 Progressive Industries EMS-PT30X for protection (high and low voltage cutoff, miswiring detection, restart delay vs surge only) and monitoring (volts and amps display vs indicator lights only).
- Choose the Southwire Surge Guard 44280 for price ($97.69 vs $135.88) and surge rating (2,100 joules vs 1,790 joules).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 30 amp RV surge protector; a clear win is highlighted. How we rank explains each one.
| Factor weight | Progressive Industries EMS-PT30X | Southwire Surge Guard 44280 |
|---|---|---|
| Overall rating | 4.2/5 | 3.2/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 0 surge only |
| Surge rating 10% | 50 1,790 joules | 60 2,100 joules |
| Monitoring 10% | 50 volts and amps display | 0 indicator lights only |
| Price 20% | 64 $135.88 | 86 $97.69 |
| Warranty 25% | 100 lifetime warranty | 100 lifetime warranty |
Specifications
| Progressive Industries EMS-PT30X | Southwire Surge Guard 44280 | |
|---|---|---|
| Protection | ||
| Service | 30 A | 30 A |
| Type | EMS | Surge only |
| Surge rating | 1,790 J | 2,100 J |
| Miswiring detection | Yes | - |
| Restart delay | Yes | - |
| Build | ||
| Mount | Portable | Portable |
| Display | Yes | No |
| App | No | No |
| Weatherproof | Yes | Yes |
| Lock | Yes | Yes |
| Warranty | Lifetime | Lifetime |