04
Maintenance
4
1. Check the circuit breaker on a regular basis during operation;
2. After the circuit breaker cuts off the overload or short-circuit current, the
fault should be eliminated before closing the circuit breaker.
Table 3 Analysis and troubleshooting of common faults
Symptoms
Cause analysis
Troubleshooting method
Short circuit at load end
Fault occurs to the operating
machanism.
The rated current of the
circuit breaker does not match
the load current
The wire is loose or not
properly fixed by wiring screws.
The cross-sectional area of
the selected wire is too small
Eliminate the fault
Replace the product
Replace with product of
proper specifications
Tighten the wiring screws
Replace with wire of proper
specifications
The handle cannot
close the circuit
breaker
No power
Temperature is
too high
The wire strip length is too short.
Re-strip the wire
The wire is loose or not
properly fixed by wiring screws.
Tighten the wiring screws
Wiring torque
2
.
0N
·
m
1
2
1
2
S
25mm
2
L
11mm
S
16mm
2
