UL Listed Simply insert wires into the poles for a quick and secure wire connection; No twisting or crimping. Compact flame-retardant thermoplastic insulation shell 30A, 110°C (230°F), 600V (1,000V in fixtures and signs) Rear mounted test ports to test current continuity Highly conductive, tin-plated internal copper bus Clear side panel for easy inspection Note: Dimensions are L x H x W (in")