The SP1 is a UL 1449 3rd Edition‑listed surge protective device that provides reliable, cost‑effective surge protection. This Type 1 SPD is capable of being installed on either the line or load side of the service entrance disconnect and can be used as a replacement for devices formerly known as secondary surge arrestors or lighting arrestors, which could not be manufactured after UL 1449 3rd Edition in many common voltages and configurations. Multiple mounting options coupled with a compact footprint enables installation of the SP1 in a wide range of applications.
