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 $199.99The Progressive Industries EMS-PT50X is the better RV surge protector overall, rated 3.5 to 3.3. The Progressive Industries EMS-PT50X leads on protection and price. The Progressive Industries EMS-PT50X costs $50 less ($199.99 vs $249.99).
A connected surge protector for 50 amp RVs that you can watch from anywhere. Buy the auto shutoff version if you want an EMS.
Amazon $249.99Prices 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-PT50X for protection (high and low voltage cutoff, miswiring detection, restart delay vs replaceable surge module) and price ($199.99 vs $249.99).
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 | Progressive Industries EMS-PT50X | Hughes Power Watchdog PWD50W |
|---|---|---|
| Overall rating | 3.5/5 | 3.3/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 15 replaceable surge module |
| Surge rating 10% | 93 3,580 joules | 50 surge rating not published (neutral score used) |
| Monitoring 10% | 50 volts and amps display | 50 app |
| Price 20% | 66 $199.99 | 52 $249.99 |
| Warranty 25% | 0 warranty not published, scored as none | 100 lifetime warranty |
Specifications
| Progressive Industries EMS-PT50X | Hughes Power Watchdog PWD50W | |
|---|---|---|
| Protection | ||
| Service | 50 A | 50 A |
| Type | EMS | Surge only |
| Surge rating | 3,580 J | - |
| Miswiring detection | Yes | No |
| Restart delay | Yes | No |
| Replaceable surge module | - | Yes |
| Build | ||
| Mount | Portable | Portable |
| Display | Yes | No |
| App | No | Yes |
| Weatherproof | Yes | Yes |
| Lock | Yes | Yes |
| Warranty | - | Lifetime |
| Released | 2017-08-23 | 2025-02-01 |
