EMP Shield

How to Choose

Protect the AC service and the DC array as two separate problems. The Home 120/240V unit installs at the service entrance or main panel and covers everything downstream. The DC units are specified by array voltage — 220-300V, 300-420V and 600V MAX versions exist because a device rated below your string's open-circuit voltage will not survive, and one rated far above it clamps too late to help. Read your string Voc at record low temperature and buy to that number. Concealed models exist where the installation must not be visible.

Key Specifications Explained

• AC protection: 120/240V single-phase whole-home, service entrance or panel mount
• DC protection: 220-300V, 300-420V and 600V MAX solar/wind versions
• Response: Sub-nanosecond clamping, designed to survive repeated events
• Coverage: Lightning, CME and EMP; concealed modules available
• Warranty: Manufacturer-backed with connected-equipment coverage — confirm current terms

Shop the Range

Thirteen EMP Shield SKUs from $389 to $639, covering home AC, concealed home modules and the full DC voltage range up to 600V.

Frequently Asked Questions

Which DC model matches my array?

Use your string's open-circuit voltage at your coldest recorded temperature, not the nominal rating. Buy the model whose range contains that number.

Do I need both AC and DC units?

For a solar home, yes. The AC unit protects the house; the DC unit protects the array and charge controller, and they are separate current paths.

Does this replace my breaker or SPD?

No. It works alongside overcurrent protection. Breakers handle overcurrent; this handles voltage transients.

Related Categories

• Solar Surge & EMP Protection
• Solar Combiner & Junction Boxes
• Solar Monitoring & Optimizers
• Rapid Shutdown Devices