IEK brand stepped bus insulators are intended for rigid fixing and insulation of current-conducting buses inside the electric panels, busbar bridges and other equipment. This insulator guarantees the absence of disruptive discharges between the buses and can be used in AC and DC electric equipment of 50 Hz and voltage under 1000 V. Insulator casing is made of special mechanical impact-resistant non-flammable polymer notable for its high electrical resistance ratings. Insulator casing is made of special mechanical impact-resistant non-flammable polymer notable for its high electrical resistance ratings. Number of poles: 4Busbar distance: 53Nominal rated voltage: 660Withstand lightning pulse voltage: 15.0Weight: 1160Thread length: 15Thread size metric (M. . ): 10Ambient temperature: -60... +80Short-term withstand voltage of industrial frequency: 2.5Breakdown voltage of industrial frequency insulation: 14.0Bending strength: 125Tightening torque of bus attachment screws: 12.0Destructive torque: 60Diameter of holes for fastening screws in buses: 11.0Width: 212.0Height: 200.0Depth: 36.0Colour: EV000233Material: IEK_V0000465Material quality: IEK_V0000467Max. rated current: 860

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