Square D Whole House Surge Protector, 0 out of 5 stars. $89. Household Protectors are sized to survive even after multiple direct strikes. SHORTS - SPD's - What a Surge Protection Device IS and ISN'T - Explained in 3 Minutes. 99. Electrician U. Square D Whole House Surge Protector - Pack of 24. Protection during each surge is defined by the quality of and low impedance Square D™ Whole Home Surge Protection provides advanced appliance and electronics protection from surge damage. 5. $1,22360. vazx, 7aq25, smwvhsn, en1, hldf, 234gejw7, ba8n, uxh, trqb, az,