Product Name Insulation Voltage (kVr.m.s.) 1 - Outer Creepage Distance (mm) 2 - Insulator Thickness (mm) 3 - Clearance (mm) PS2841-4A 1.5 4.0 0.4 4.0 PS2841-4B 1.5 4.0 0.4 4.0 PS2845-4A 1.5 4.0 0.4 4.0