Grounding PE-PEN Rail System PE/PEN Rail System. PE-PEN Rail System Baying Bracket E-Cu The PE/PEN combination, consisting of busbars, combination angles and baying brackets, supports type-tested configurations as per IEC 61 439-1. To product PE-PEN Rail System PE/PEN Combination Angle, E-Cu for PE/PEN combinations The PE/PEN combination, comprising busbars, combination angles and baying brackets, supports type-tested configurations as per IEC 61 439-1. To product