ABB SACE Emax E4.2 - Page 273

ABB | SACE Emax 2
Putting into service and maintenance
3 - E1.2 maintenance and E2.2, E4.2 and E6.2 first level maintenance
270 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
Disassembly operations for
circuit breakers E2.2, E4.2 and
E6.2
To disassemble the parts of the circuit-breaker:
1. Remove the transparent flange (A) of the trip unit, by turning the screws (B).
2. Remove the front cover of the circuit-breaker (C), by removing the mounting screws (D).
A
D
B
C
2
1
90°
1
2
Figure 148 - Removing the flange and front cover
3. Remove the gearmotor (E) by removing the screw (F) and the connector.
E
E
F
Figure 149 - Removing the gearmotor
4. If there is an undervoltage coil (G), remove it, and discharge the springs of the operating mechanism
for closing and opening the circuit breaker.
G
3
1
E
F
4
2
Figure 150 - Removing the undervoltage coil