GE Industrial Solutions DC OEM Module For use with Gerapid DC Circuit Breaker - Manual (Page 30)

DC OEM MODULE FOR USE WITH GERAPID CIRCUIT BREAKERS
APPENDIX C Layout Drawings.
30 Design and specifications are subject to change without notice S47183Ee rev.01 2011-04-26
APPENDIX D – Tightening Torques Tables
All the tightening torques listed below are applicable for Module, Trolley and Breaker.
Table D-1 Tightening torques for mechanical construction elements
Screw size Hex-head screws
Class 5.8
Hex-head screws
Class 8.8
Self-tapping
screws
Inch-pounds Inch-pounds Inch-pounds
Less M3 3 – 4 5 - 6 -
M3 7 – 8 10 - 11 -
M3.5 9 - 10 15 - 17 8 - 10
M4 14 - 15 22 - 24 15 - 17
M5 26 - 29 44 - 49 62 - 68
M6 47 - 51 75 - 83 132 - 146
M8 106 - 117 177 - 194 177 - 194
M10 230 - 253 362 - 398 -
M12 362 - 398 620 - 681 -
M16 885 – 973 1500 - 1650 -
Table D-2 Tightening torques for electric circuits connections
Screw size Auxiliary & control
circuits
Copper bus bar
connections
Inch-pounds Inch-pounds
Less M3 - -
M3 9 - 10 -
M3.5 10 - 11 -
M4 13 - 15 -
M5 26 - 29 -
M6 52 - 58 71 - 78
M8 124 - 136 177 - 194
M10 230 - 253 354 - 390
M12 354 - 390 620 - 681
M16 531 - 584 1240 - 1360