Electrical Connections; Power Circuit Connections; Shapes Of The Terminals; Examples Of Connection Busbar Layouts Depending On The Types Of Terminals - Allen-Bradley 140G-R Installation Instructions Manual

5

Electrical connections

5.1

Power circuit connections

Use cables or insulated bars or perform specifi c type tests according to the reference standard of the specifi c installation.
5.1.1

Shapes of the terminals

F
Front terminals 2000A
(80% and 100% rated)
2500A (80% rated)
Fig. 10
Note
The drawings provide a schematic illustration of the type of terminal. The exact shape of the terminals is given in the chapter entitled "Overall
dimensions". The terminals installed on the upper and lower parts (input and output) can be different from each other.
5.1.2

Examples of connection busbar layouts depending on the types of terminals

The busbars allow connections to be made between the terminals of the MCCB and the system bus
The following table illustrates the minimum dimensional cross section for busbar connection.
B
C(dia.)
E
E
D
A
(1) Always use two wrenches (to avoid straining the insulating parts of the breaker), and apply the tightening torque of the terminals using high-strength fasteners.
Check tighteness after 24 hours.
Fig. 11
DIR 1000682R0002 Version 03
ES
Extended spread
terminals
2000A-2500A (IEC)
140G-R
Qty.
Frame
Required
Width(A)
Size
[in.] 4
2000 A 2
[mm] 102
[in.] 4
2500 A,
2
80%
[mm] 102
[in.] 4
2000 A 2
[mm] 102
[in.] 4
2500 A,
2
80%
[mm] 102
[in.] 4
2500 A,
4
100%
[mm] 102
[in.] 4
3000 A,
4
80%
[mm] 102
[in.] 4
3000A,
4
100%
[mm] 102
VR
Vertical rear terminals
for fl at bar 2000A
(80% and 100% rated )
2500A (80% rated)
Busbar Dimensions
Terminal Hole
Thickness(B) Holes (four) Center
Diameter (C) (D)
Front Busbar
0.25 0.59 0.79
6.4 15 20
0.25 0.59 0.79
6.4 15 20
(1)
Rear Busbar
0.25 0.59 4.5
6.4 15 114
0.25 0.59 4.5
6.4 15 114
0.25 0.512 3.87
6.4 13 98
0.25 0.512 3.87
6.4 13 98
0.25 0.512 3.87
6.4 13 98
(8)
VR
Vertical rear terminals Lugs for CuAl cables
2500A (80% rated) 2000A (100% rated)
3000A (80% and 2500A (80% rated)
100% rated)
Terminal Torque
Distance Between
Fastener [lb-in.]
Terminal Holes (E)
1.57
40
Fasteners supplied by customer
1.57
40
1.57
40
Fasteners supplied by customer
1.57
40
1.75
M12
Stud
44.45
1.75
M12
Stud
44.45
1.75
M12
Stud
44.45
MC
Wrench
size
[Nm]
615 70 19 mm
615 70 19 mm
615 70 19 mm