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Define terminal blocks

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rush1

rush1

Electrical
Jul 9, 2007
4
IEC electrical drafting standards. What is the basis/reference is used to define terminal blocks and connectors, with the numeral preceding the X designator? For example: 3X, 1 for a terminal block of set 3, ….and X3, 14 (pin) for a 25 connector position . The standards defines putting the “3” in front of the X, for TB, instead of after X?
 
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