ABB SACE Emax 2 Series Operating Instructions Manual page 272
Low voltage air circuit-breaker
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Disassembly operations for
circuit breakers E1.2
269 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
To disassemble the parts of the circuit-breaker:
1.
Remove the front cover (A) by removing the mounting screws (B and C).
2.
With a four-pole circuit-breaker (Figure 144 - Four-pole fixed circuit-breaker), remove the lateral
shield (d) by removing the fixing screws (E).
3.
With circuit-breaker in the withdrawable version (Figure 145 - Three-pole withdrawable circuit-
breaker), remove the protection (F) and the terminal-cover (G) by removing the screws (H)
E
A
D
C
Figure 144 - Four-pole fixed circuit-breaker
4.
Remove the gearmotor (I) by removing the screw (L).
Figure 146 - Removing the gearmotor
5.
If there is a undervoltage coil (M), remove it, and discharge the springs of the operating mechanism
for closing and opening the circuit breaker.
Figure 147 - Removing the undervoltage coil
B
Figure 145 - Three-pole withdrawable circuit-breaker
2
I
3
4
2
M
3 - E1.2 maintenance and E2.2, E4.2 and E6.2 first level maintenance
ABB | SACE Emax 2
A
B
C
G
L
4
1
Putting into service and maintenance
F
H
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