Komatsu D475A-5E0 Operation & Maintenance Manual page 105

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EXPLANATION OF COMPONENTS
CIRCUIT BREAKER
If the starting switch does not work, open the fuse inspection
cover (A) at the bottom front left of the operator's compartment
and check.
If excessive current flows through the circuit breaker, it cuts off
the electric circuit to prevent damage to the electrical
components and wiring.
To restore the electric circuit after it has been cut off, push in
reset button (1). (This springs out when the circuit is cut off.)
If the electric circuit is normal, reset button (1) will stay pushed
in. If it comes out immediately when it is pushed in, the electric
circuit must be checked.
No.
Capacity
(1)
20 A
(2)
20 A
(3)
20 A
(4)
20 A
(5)
20 A
(6)
20 A
REMARK
The circuit breaker is a device installed in electric circuits where a large current flows. It is installed to protect the
electric circuit. It protects the electric components and wiring from damage caused by an abnormal current in the
same way as a normal fuse. After repairing and restoring the location of the abnormality, there is no need to replace
the breaker. It can be used again.
3 - 52
Circuit
Steering controller
Monitor panel
Transmission controller
Air con main power
Head lamp
Starter switch
OPERATION

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