ABB | SACE Emax 2
Management operations
4 - Environmental conditions
27 | © 2023 ABB | 1SDH001000R0002 - ECN000297030
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:
circuit-
breaker IEC
60947
Iu (A)
Horizontal terminals Vertical terminals
Q.ty
Dimension of busbars
(in)
Q.ty
Dimension of busbars
(in)
E2.2
800 1 50x10 1 50x10
1000 2 50x5 2 50x5
1250 2 50x10 2 50x10
1600 2 2x60x10 1 100x10
2000
3 60x10 2 80x10
3 60x10
(1)
2 80x10
(1)
2500
3 60x10 4 100x5
3 60x10
(1)
4 100x5
(1)
E4.2
2000 2 80x10 2 80x10
2500 2 100x10 2 100x10
3200 3 100x10 3 100x10
4000 4 100x10 4 100x10
E6.2
4000 4 100x10 4 100x10
5000 5 100x10 5 100x10
6300 6 100x10 6 100x10
(1)
values for spread terminals
circuit-
breaker UL
1066
Iu (A)
Horizontal terminals Vertical terminals
Q.ty
Dimension of busbars
(in)
Q.ty
Dimension of busbars
(in)
E2.2-A
1600
3 1/4 x 2,5 2 1/4 x 3
4 1/4 x 2 3 1/4 x 2
2000 4 1/4 x 2,5 4 1/4 x 2
E4.2-A
2000 4 1/4 x 2,5 4 1/4 x 2
2500 4 1/4 x 4 3 1/4 x 4
3200
- - 4 1/4 x 4
- - 5 1/4 x 3
E6.2-A
4000 6 1/4 x 4 4 1/4 x 5
5000 10 1/4 x 4 6 1/4 x 5
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 they 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.
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