Citel DS44-400/G SPD, type 2, 4-pole, 230/400V, 20kAProduct Overview The DS44 400 G is a Type 2 AC surge protector designed for primary protection of 3 phase+Neutral networks at the main electrical panel in 230 400V applications. This multipolar SPD features hybrid MOV+GDT technology providing both common mode and differential mode protection with pluggable modules for each phase and optional remote signaling capability. Key Features: Hybrid MOV+GDT Technology: Combines metal oxide varistor and gas