GENERAC POWER SYSTEMS 7409 DISPOSITIF PROTECTION SURTENSION 120/240V CEMA 4

120 or 240 VAC Single Split Phase Surge Protective Device. Lightning strikes and utility switching can cause voltage transients and power surges in the electrical grid. These surges travel through distribution lines and into homes or businesses, damaging sensitive electronic appliances and shortening their life. Many transients go undetected, but overtime, contribute to sudden and inexplicable failures of electrical equipment. Products that are susceptible to damage include: mobile phones, computers, televisions, appliances, smart home devices, and lighting fixtures.