A whole-house surge protector (SPD) stops voltage spikes at your electrical panel, before they reach appliances, HVAC equipment, electronics and smart devices. Since the 2020 National Electrical Code (NEC 230.67), a Type 1 or Type 2 SPD is required whenever the electrical service to a home is installed or replaced.
Two ways to install:
-
Breaker-style SPDs plug into your panel like a 2-pole breaker and must match the panel: Square D HOM2175SB or HOM250PSPD for Homeline, QO2175SB or QO250PSPD for QO, Eaton BRPSURGE or BRNSURGE for BR, Eaton CHPSURGE or CHNSURGE for CH, Siemens QSPD for Siemens, and GE THQLSURGE2 for GE PowerMark.
-
Hardwired SPDs such as the Eaton CHSPT2ULTRA and Square D HEPD50 or HEPD80 mount next to the panel and connect through a 2-pole breaker, so they work with almost any brand.
What the kA rating means: it is the largest surge current the device is rated to absorb. Higher ratings handle bigger surges and generally last longer. Plug-on neutral models (part numbers with a "P", like QO250PSPD) need a plug-on neutral panel.
Not sure which one fits? Check the label inside your panel door for the brand and type, or contact us with a photo and we'll match it for you.
