ABB SACE Emax 2 Installation, Operation And Maintenance Instructions - page 30
ABB | SACE Emax 2
28 | © 2014
ABB |
1SDH000999R0002 - L8569
Emax E1.2 circuit-breakers | 6 - Installation
Connection to the power circuit
The connection of a circuit-breaker to the power circuit is performed using the connection busbars of the
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
Figure 64
IMPORTANT: it is possible to obtain different capacities for the connections by altering
the thickness and number of busbars in parallel.
The following the 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)
Dimension of
busbars (mm)
Horizontal termi-
nals
Vertical terminals
E1.2
630
2x40x5
yes
yes
E1.2
800
2x50x5
yes
yes
E1.2
1000
2x50x10
yes
-
2x50x8
-
yes
E1.2
1250
2x50x10
yes
-
2x50x8
-
yes
E1.2
1600
3x50x8
yes
-
2x50x10
-
yes
circuit-breaker
UL 1066
Iu (A)
Dimension of bu-
sbars (inches)
Horizontal termi-
nals
Vertical terminals
E1.2-A
800
1x1/4x3
-
yes
2x1/4x2
yes
-
E1.2-A
1200
2x1/4x2
-
yes
3x1/4x2
yes
-