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Surge arrester
3-electrode arrester
B88069X8920B252
T21-A230X
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At delivery AQL 0.65 level II, DIN ISO 2859
In ionized mode
Test according to ITU-T Rec. K.12
Tip or ring electrode to center electrode
Total current through center electrode, half value through
tip respectively ring electrode.
Terms in accordance with ITU-T Rec. K.12 and DIN 57845/VDE0845
Dimensional drawing
Not to scale
Dimensions in mm
Non controlled document
Cautions and warnings
Surge arresters must not be operated directly in power supply networks.
Surge arresters may become hot in case of longer periods of current stress (danger of burning).
Surge arresters may be used only within their specified values. In case of overload, the head
contacts may fail or the component may be destroyed.
Damaged surge arresters must not be re-used.
KB AB E / KB AB PM
Please read Cautions and warnings and
Important notes at the end of this document.
Page 3 of 4
Issue 04 / 2007-10-10
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