Surge protectors guard equipment against damaging voltage transients and electrical noise. Active tracking filters protect against the low voltage/high frequency transients generated by everyday events such as turning on motors or machinery. Both types of protection can be installed at the service entrance, branch panel and/or the load itself to provide the appropriate level of protection for any type of equipment, no matter how sensitive. SolaHD offers a complete selection of single and three phase models, including combination units that provide both surge protection and filtering in a single device. Also available are surge protection for data lines, coaxial cables and telephone systems.