The Hager SPN415 is a Type 2 surge arrestor with 4 poles, 20kA of surge current protection per pole, a DIN rail mountable housing, IP20 protection rating, and 1.25kV of maximum discharge voltage. It is designed to provide protection against electrical equipment damage from voltage transients, lightning strikes, and power surges. This surge arrestor is suitable for application on residential, industrial, and commercial premises.