ABB SACE Emax 2 Installation, Operation And Maintenance Instructions page 31
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29 | © 2021 ABB | 1SDH002083A1002 - ECN000119014 - Rev. A
Continued from the previous page
IMPORTANT: it is possible to obtain different capacities for the connections by altering
the thickness and number of busbars in parallel.
The following tables provide some examples of the quantity and the sizes of the connections that can be used
for each type of circuit-breaker:
Iu (A)
4000
3200
IEC 60947-3
2500
2000
1600
Iu (A)
UL 489B
3200
2500
UL 489B
2000
UL 489F
1600
IMPORTANT: before proceeding with the connection between terminals and connection
busbars:
• make sure that the contact surfaces of the busbars are free of burrs, dents, traces of
rusting, dust or traces of grease.
• make sure, if aluminium busbars are used, than these are tin plated in the contact
areas.
• make sure that the busbars do not exert forces in any direction on the terminal.
• for fastening purposes use strength class 8.8 M12 screws or threaded rods with spring
washers and apply 70 N m - 619.5 lb in tightening torque.
NOTE: the information on the performances of the circuit-breakers in switchboards is available
on the website:
http://new.abb.com/low-voltage/products/circuit-breakers/emax2.
Vertical terminals
Dimension of busbars
Q.ty
(mm)
4
100 × 10
3
100 × 10
2
100 × 10
2
100 × 80
2
100 × 5
Vertical terminals
Quantity Dimension of busbars (in) Quantity Dimension of busbars (in)
5
1/4 × 3
4
1/4 × 4
3
1/4 × 4
4
1/4 × 2
2
1/4 × 3
ABB | SACE Emax 2
Horizontal terminals
Dimension of busbars
Q.ty
(mm)
4
100 × 10
3
100 × 10
2
100 × 10
2
100 × 80
2
100 × 5
Horizontal terminals
-
-
-
-
-
-
4
1/4 × 2,5
2
1/4 × 3
Management operations | 5 - Installation
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