Siemens 20 Amp Whole House Surge Protector Electrical Distribution Board
This device takes up the space of two standard single pole breakers, but also includes two single pole breakers so you do not lose any space in your Load Center. Once connected in the panel, the SPD device protects the entire panel and all branch circuits from surges, not just the two circuits connected to the SPD.
QSA2020SPD Whole House Surge Protection with 20-Amp Circuit Breakers for Use …
QSA2020SPD Whole House Surge Protection with Two 20-Amp Circuit Breakers for …
Provides whole house surge protection. The SPD device protects the entire panel and all branch circuits from surges.