The main function of the excavator circuit breaker is to protect the power lines and equipment such as motors by automatically disconnecting the circuit in the event of severe overload, short circuit, or undervoltage faults.
The working principle of the excavator circuit breaker is based on protecting the power lines and motors. When a serious overload, short circuit, or undervoltage fault occurs, it can automatically disconnect the circuit. This function is akin to a combination of a fuse-type switch and an over/under-temperature relay, allowing for the disconnection of fault current without the need to replace components afterward. The use of circuit breakers, whether high-voltage or low-voltage, is essential for ensuring the safe operation of the power system, preventing accidents from escalating, and ensuring the normal operation of the excavator.
In specific applications, such as excavators equipped with hydraulic breakers, the other working units of the excavator can continue to function normally regardless of whether the breaker is in operation. This is because the main directional valve of the excavator typically has a reserved valve for the main actuator valve group, supplied with pressure oil for the breaker by the main pump of the excavator, and an overflow valve is installed to regulate the working pressure of the breaker. To ensure the safe and stable operation of the system, high-pressure shut-off valves must be installed at the inlet and outlet of the circuit breaker to adjust and maintain operational system parameters.
In summary, the excavator circuit breaker protects power lines and equipment such as motors from the effects of overload, short circuit, and undervoltage faults by automatically disconnecting the circuit, ensuring the normal operation of the excavator and the safe functioning of the power system.
Product NO. | Applicable models | Weight | Packaging unit |
300708-00674 | DX120-9C
DX130-9C/DX130-9CN DX140AF/DX140LCA DX150-9C/DX150LC-9C/DX150LC-9CN DX190-3B/DX200-3B DX200-9C (CN)/DX200-9C (CN) ACE DX215-5B DX215-9C/DX215-9CN DX220LC-9C DX220LCA-2/DX220A-2 DX220LCA-2M/DX220A-2M DX225LC-9C DX230LC-9C DX260LC-9C DX300LC-9C DX340LC-9C DX360LC-3B DX360LC-9C DX380LC-9C DX55-5B DX55-5B DX55-9C(CN)/DX60E-9C(CN)/DX60E-9C ACE DX60 ACE-10/DX60 ACE-10N DX60-9C DX60E-10/DX60E-10N(S/N:20001~) DX60W-10/DX60W-10N DX60W-9C/DX60W-9CN DX75-10/DX75-10N DX75-5B(S/N:20001~22711) DX75-5B(S/N:22712~) DX75-7B DX75-9C (S/N:20001~22711) DX75-9C ACE/DX75-9CN ACE DX75-9CPLUS/DX75-9CN PLUS(S/N:22712~) DX75E-10 DX88-9C (S/N:20001~20232) DX88-9C (S/N:20233~) E58 DX140A DX140LC DX140LCR DX140R DX140W/DX160W TIER-II DX140W-7/DX160W-7 DX150W-7/DX170W-7 DX165WR-7 DX170W-7 DX170WR-7 DX180LC DX190W DX190W-7 DX200A DX200A(S/N:1001~) DX210/DX225LCB DX210W-7 DX220A/DX225LCA DX220AF DX220AF(S/N:1001~) DX220LCA DX220W-7 DX225LC (S/N 5433~) DX225LCA(S/N:1001~) DX225LCA-2/DX200A-2 DX230LC DX235LCR DX255LC DX53W DX55W DX62R-3 DX63-3 DX63-5 DX80R DX85R-3 E55W E62 E63 E80 E85 |
0.053KG | EA |