Schneider Electric's QO2175SB Surgebreaker Surge Protective Device is a 25 kA, 120/240 V, 1‑phase, 3‑wire surge protector with a Type 1 rating that plugs into Square D QO load centers to deliver in‑panel surge protection. As a two‑pole unit designed for residential use, it serves as a whole‑home surge protection device compatible with QO load centers, combination devices, and NQ panelboards. The QO2175SB is UL‑listed and CSA‑certified for safety and is commonly marketed as the Square D Surgebreaker for QO load centers, with retailers listing it at 25 kA.
