Lightning arrester TYPE 1 PRD1 Master 3P, Uc 350V. Product range: PRD1 Master - Product or component type: Lightning arrester with plug-in protection module - Abbreviation of the device: PRD1 Master - Composition of signal contacts: 1 SD (1 W) - Typ. of. Surge arrester: electrical distribution network - earthing system: TN-C.