Southwire Surge Guard 35530
#2 in 30 ampFull review
A hardwired 30 amp EMS with a lifetime warranty for about $150. For trailer owners who want theft proof protection.
Amazon $154.97$154.97
The Southwire Surge Guard 35530 is the better RV surge protector overall, rated 4.2 to 3.1. The Southwire Surge Guard 35530 leads on protection and surge rating. The Progressive Industries EMS-HW30C costs $3.66 less ($151.31 vs $154.97).
Progressive Industries EMS-HW30C
#12 in 30 ampFull review
A long running hardwired EMS for 30 amp trailers. For owners who want protection that is always connected and can’t walk off the pedestal.
Amazon $151.31$151.31
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 35530 for protection (high and low voltage cutoff, miswiring detection, restart delay vs high and low voltage cutoff, miswiring detection) and surge rating (2,450 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 | Southwire Surge Guard 35530 | Progressive Industries EMS-HW30C |
|---|---|---|
| Overall rating | 4.2/5 | 3.1/5 |
| Protection 35% | 85 high and low voltage cutoff, miswiring detection, restart delay | 70 high and low voltage cutoff, miswiring detection |
| Surge rating 10% | 70 2,450 joules | 50 1,790 joules |
| Monitoring 10% | 50 volts and amps display | 50 volts and amps display |
| Price 20% | 55 $154.97 | 57 $151.31 |
| Warranty 25% | 100 lifetime warranty | 0 warranty not published, scored as none |
Specifications
| Southwire Surge Guard 35530 | Progressive Industries EMS-HW30C | |
|---|---|---|
| Protection | ||
| Service | 30 A | 30 A |
| Type | EMS | EMS |
| Surge rating | 2,450 J | 1,790 J |
| Voltage cutoffs | 102 V / 132 V | - |
| Miswiring detection | Yes | Yes |
| Restart delay | Yes | - |
| Build | ||
| Mount | Hardwired | Hardwired |
| Display | Yes | Yes |
| App | No | No |
| Warranty | Lifetime | - |
| Released | - | 2009-10-26 |