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Terminal Screw Torque Settings.
TIGHTENING TORQUES FOR 3 POLE CONTACTORS
TYPE
CONTACTOR TERMINAL
SCREW SIZE
TORQUE
(Nm)
TORQUE
(Ft-lbs)
GMC-9
M4
2.3
1.7
GMC-12
M4
2.3
1.7
GMC-18
M4
4.0
3.0
GMC-22
M4
4.0
3.0
GMC-32
M5
4.0
3.0
GMC-40
M5
4.0
3.0
GMC-50
M6
5.0
3.7
GMC-65
M8
5.0
3.7
GMC-75
M8
5.0
3.7
GMC-85
M8
5.0
3.7
GMC-100
M8
9.0
6.6
TIGHTENING TORQUES FOR THERMAL OVERLOADS
TYPE
TERMINAL SCREW SIZE
TORQUE
(Nm)
TORQUE
(Ft-lbs)
GTK-22
M4
2.3
1.7
GTK-40
M4
4.0
3.0
GTK-85 (28-40A) M6-M8
5.1
3.8
TIGHTENING TORQUES FOR MODULAR SCREW TERMINALS
TYPE
TERMINAL SCREW SIZE
TORQUE
(Nm)
TORQUE
(Ft-lbs)
2.5mm
M2.5
0.4 - 0.6
0.30 - 0.44
4.0mm
M3
0.5 - 0.7
0.37 - 0.52
10.0mm
M5
2.0 - 2.5
1.48 - 1.84
16.0mm
M6
2.5 - 3.0
1.84 - 2.21
35.0mm
M8
6.0 - 10.0
4.00 - 7.38
75.0mm
M8
6.0 - 10.0
4.00 - 7.38