What whole-home surge protection is designed to do
A surge protective device is designed to limit transient overvoltage by responding to a short-duration event. It does not turn a prolonged outage into usable power, regulate every voltage problem, or guarantee protection from a direct lightning strike. Transients can originate outside the property or within the electrical system as loads switch. Protection works best as part of a coordinated installation with sound grounding and bonding.
The pictured Leviton LSPD1 is a real breaker-format surge protective product for compatible equipment. Eaton and Schneider Electric Square D offer other device families with their own listings and installation requirements. The appropriate choice depends on the service configuration, enclosure compatibility, connection method, and manufacturer instructions. Do not assume a higher advertised surge-current number alone makes one product the right answer for every property. Ask how the device will be installed and how its operational status is checked.
