Earth N- Series Terminal Blocks have conductor termination by well proven screw clamp technology and are manufactured using Polyamide 6,6 Insulation Housing. This series currently consists of 4, 6, 10 sq mm Terminals (ETN 4, ETN 6, ETN 10) all with identical profiles. All ET - N Series terminals have funnel shaped wire entry hole with metal foot directly mountable on DIN Rail.