Whole-House Surge Protection with Compact, UL Type 1 Plug-On SPD
prosurge2025-08-08T11:47:18+08:00Introduction Power surges — from lightning strikes, utility switching and upstream load events — cause costly damage to appliances, electronics and critical systems. The new **POSP 20 Series** plug-on surge protective device offers an easy, reliable way to add whole-house surge protection at the breaker panel. Designed as a compact UL Type 1 SPD with quick [...]