Connection To The Power Circuit - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions For The Installer And The User

Connection to the power circuit The connection of a circuit-breaker to the power circuit is performed using the connection busbars of the
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electric switchgear fixed to the terminals of the circuit-breaker. The sizing of the busbars is specified by the
designer of the electrical switchgear.
Figure 63
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
Iu (A)
IEC 60947
E1.2 630
E1.2 800
E1.2 1000
E1.2 1250
E1.2 1600
circuit-breaker
Iu (A)
UL 1066
E1.2-A 800
E1.2-A 1200
Figure 64
Dimension of
Horizontal terminals
busbars (mm)
2x40x5 yes
2x50x5 yes
2x50x10 yes
2x50x8 -
2x50x10 yes
2x50x8 -
3x50x8 yes
2x50x10 -
Horizontal terminals
Q.ty Dimension of busbars (in) Q.ty Dimension of busbars (in)
2 1/4 x 2
4 1/4 x 2
ABB | SACE Emax 2
Vertical terminals
yes
yes
-
yes
-
yes
-
yes
Vertical terminals
1 1/4 x 3
2 1/4 x 3
Emax E1.2 circuit-breakers | 6 - Installation