TP48200A-DT19C1, TP48200A-DT19C2,
TP48200A-HT19C1 and TP48200A-HT19C2 Telecom
Power
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
66
The new circuit breaker is intact and has the same specifications as the circuit breaker to
be replaced.
Procedure
Step 1
Switch off the circuit breaker that is to be replaced.
Step 2
Record the positions where the output cable and signal cable terminals connect to the circuit
breaker.
Step 3
Loosen the screw that secures the upper port of the circuit breaker using a Phillips screwdriver,
and remove the output power cable and signal cable terminals. Wrap the cable and terminals
using insulation tape.
Step 4
Loosen the screw that secures the lower port of the circuit breaker using a Phillips screwdriver,
and open the buckle at the base of the circuit breaker using an insulated flat-head screwdriver.
Step 5
Remove the circuit breaker from the guide rail. Figure 4-6 shows how to remove the circuit
breaker.
Figure 4-6
Removing the circuit breaker
Step 6
Switch off the new circuit breaker. Press the buckle at the circuit breaker base using an
insulated flat-head screwdriver and install the new circuit breaker. Then remove the
screwdriver so that the buckle secures the circuit breaker to the guide rail.
Step 7
Tighten the screw that secures the lower port of the circuit breaker.
Step 8
Remove the insulation tape from the output power cable and signal cable terminals. Then
connect the output power cable and signal cable terminals to the upper port of the circuit
breaker and tighten the screw.
Step 9
Switch on the circuit breaker. Figure 4-7 shows how to install the new circuit breaker.
