Full Technical Description: 3/0 AWG (Standard, ACSR and Aluminum Alloy), 3/0 AWG (Compact, ACSR) min. Run Conductor Size; 4/0 AWG (Standard, ACSR and Aluminum Alloy), 266 MCM (Compact, ACSR) Max. Run Conductor Size; 3/0 AWG (Standard, ACSR and Aluminum Alloy, Compact, ACSR) min. Tap Conductor Size; 4/0 AWG (Standard, ACSR and Aluminum Alloy), 18/1 AWG (Compact, ACSR) Max. Tap Conductor Size; H Shape; Copper/Aluminum Conductor Material; RUS Approval; High Conductivity Aluminum Body Material; D Die Index; RoHS Compliant; Overall Dimension 2.25 Inch Length X 0.89 Inch Width X 1.44 Inch Height