DL-SPD series thermally protected Surge Protective Device is specially designed to be used in outdoor and commercial LED lighting fixtures for transient over voltage protection. It is mainly composed of thermally protected varistors and gas discharge tube components. Its built-in thermal disconnect function provides additional protection to prevent catastrophic failure and fire hazard even under the extreme circumstances of varistor end-of-life or sustaining over voltage conditions. The product is connected with LED power driver to provide reliable lighting surge protection, which can effectively prolong the
service life and stability of luminaires.