ABB SACE Emax E4.2 - Page 272

ABB | SACE Emax 2
Putting into service and maintenance
3 - E1.2 maintenance and E2.2, E4.2 and E6.2 first level maintenance
269 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
Disassembly operations for
circuit breakers E1.2
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)
A
D
E
C
B
Figure 144 - Four-pole fixed circuit-breaker
A
F
H
G
C
B
Figure 145 - Three-pole withdrawable circuit-breaker
4. Remove the gearmotor (I) by removing the screw (L).
2
4
I
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.
M
3
2
1
4
Figure 147 - Removing the undervoltage coil