TP48200A-D14A1 Telecom Power
User Manual
5 System Maintenance
Issue 04 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
35
Figure 5-4
Replacing the AC SPD
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Replacing Circuit breakers
To replace a circuit breaker, perform the following steps:
Step 1
Disconnect the power supply of a circuit breaker. For example, disconnect the DC input and
set the circuit breaker to OFF before replacing the input circuit breaker.
Step 2
Remove the cables or copper bars connected to the circuit breaker using a Phillips screwdriver,
and then wrap the cables or copper bars using black PVC insulation tape to avoid hazards.
Step 3
Press the contact plate at the bottom of the circuit breaker using a flat-head screwdriver. Then,
remove the circuit breaker, as shown in Figure 5-5.
Step 4
Press the contact plate at the bottom of the circuit breaker using a flat-head screwdriver again
to install the new circuit breaker in the correct position. Then, push the contact plate upwards
using the screwdriver.
Step 5
Install the cables or copper bars to the circuit breaker using a Phillips screwdriver in the same
way.
Step 6
Set the circuit breaker to ON and connect power supply of this circuit breaker, as shown in
Figure 5-6.
Figure 5-5
Removing the circuit breaker
