The main function of the excavator pressure switch is to monitor the pressure changes in the hydraulic system and to send signals when the pressure exceeds or falls below the set values, thereby controlling the corresponding actions of the excavator and preventing equipment damage or safety incidents caused by abnormal pressure.

As a safety protection device in the hydraulic system, the working principle of the excavator pressure switch is relatively simple. It mainly consists of components such as a spring, diaphragm, and contacts. When the pressure in the hydraulic system acts on the diaphragm, the diaphragm deforms according to the pressure level, compressing or stretching the spring, which causes the contacts to either close or open. This change in switch state is how the pressure switch sends signals. In this way, the pressure switch can monitor the pressure changes in the hydraulic fluid in real-time, ensuring the normal operation of the hydraulic system.

Specifically, when the pressure of the hydraulic system exceeds or falls below the preset value, the pressure switch will immediately trigger an alarm or shut down the system, thus preventing various faults and accidents caused by overpressure or underpressure. This automatic control feature greatly enhances the safety and reliability of excavators and other construction machinery, while also reducing the likelihood of accidents caused by operator errors or negligence. Additionally, some advanced pressure switches are equipped with digital display functions, which can show the pressure values of the hydraulic system in real-time, providing operators with more accurate and timely information.

In summary, the excavator pressure switch plays an indispensable role in ensuring the normal operation of the machine. By monitoring pressure changes in the hydraulic system and responding accordingly, it ensures the safety and reliability of the excavator.

Product NO.	Applicable models	Weight	Packaging unit
2549-9112	DH130LC-V DH130W-V DH150LC-7 DH150W-7 DH150W-7S DH210W-7(S/N:20001~21000) DH210W-7(S/N:21001~) DH210W-7S DH215-7 DH215-9 DH215-9E DH220LC-3 DH220LC-7 DH220LC-9E DH220LC-V DH225LC-7 DH225LC-9 DH258LC-7 DH258LC-V DH280LC-3 DH300LC-7 DH300LC-V DH330LC-3 DH360LC-V DH370LC-7 DH370LC-9 DH420LC-7 DH500LC-7 DX150LC DX150LCS DX230LC-SKD DX230LCS DX260LC DX300LC DX345LC DX350LC DX380LC DX420LC DX500LC/DX500LCG DX700LC S150LC-7B DX140 DX140A DX140LC DX140LCR DX140R DX140W/DX160W TIER-II DX140W/DX160W TIER-III DX140W ACE DX140W TIER-II DX140W TIER-III DX140WA DX180LC DX190W DX200A DX210/DX225LCB DX210W DX210W DX210WA DX220A/DX225LCA DX220AF DX220LC (TIER-3) DX220LCA DX225LC DX225LC (S/N 5433~) DX225NLC DX230LC DX235LCR DX255LC DX300LC DX300LCA DX340LC DX340LCA DX350LC DX350LCA/DX360LCA DX360LCA(S/N:5950~) DX380LC DX380LCA DX420LC DX420LCA DX480LC DX480LCA/DX500LCA DX480LCA/DX500LCA/DX520LCA DX520LC DX520LC/DX520LCA DX520LCA DX700LC DX700LCA SOLAR 130-III SOLAR 130-V SOLAR 130LC-V SOLAR 130W-III SOLAR 130W-V(1) SOLAR 130W-V(2) SOLAR 140-V SOLAR 140LC-V SOLAR 140W-V SOLAR 160W-V SOLAR 170-III SOLAR 170LC-V SOLAR 170W-III SOLAR 170W-V SOLAR 175LC-V SOLAR 180W-V SOLAR 185W-V SOLAR 200W-III SOLAR 200W-V SOLAR 210W-V SOLAR 210W-V SOLAR 220LC-6 SOLAR 220LC-III SOLAR 220LC-V SOLAR 220N-V SOLAR 225LC-7A SOLAR 225LC-V SOLAR 225NLC-V SOLAR 230LC-V SOLAR 250LC-V SOLAR 255LC-V SOLAR 280LC-III SOLAR 290LC-V SOLAR 300LC-7A SOLAR 300LC-V SOLAR 330-III SOLAR 330-III SOLAR 330LC-V SOLAR 340LC-7 SOLAR 340LC-V SOLAR 360LC-V SOLAR 370LC-V SOLAR 400LC-III SOLAR 400LC-V SOLAR 420LC-V SOLAR 450-III SOLAR 450-III SOLAR 450LC-V SOLAR 470LC-V SOLAR 500LC-V SOLAR 55W-V TXC140-1 TXC140LC-2 TXC175-1 TXC180LC-2 TXC225-1 TXC225LC-2 TXC255-1 TXC255LC-2 TXC300-1 TXC300LC-2 TXC340-1 TXC340LC-2 TXC420-1 TXC420LC-2 TXC470-1 TXC480LC-2 TXC500-1 TXC520LC-2 DX140LC DX140W/DX160W DX160LC DX160W RAIL WAY DX180LC DX225LC DX235NLC DX255LC DX300LC SOLAR 130LC-V SOLAR 140LC-V SOLAR 140W-V & S160W-V SOLAR 140W-V RAIL WAY SOLAR 150LC-V SOLAR 155LC-V SOLAR 170LC-V SOLAR 175LC-V SOLAR 210W-V SOLAR 220LC-V SOLAR 225LC-V SOLAR 250LC-V SOLAR 255LC-V SOLAR 290LC-V DX225LCA	0.044KG	EA
301413-00339	DX1000HD-10 DX1000LC-9C DX120 DX120-9C DX125W-10/DX125W-10N DX125W-9C/DX125W-9CN DX130-10/DX130-10N DX130-9C/DX130-9CN DX140AF/DX140LCA DX150-9C/DX150LC-9C/DX150LC-9CN DX150LC-10/DX150LC-10N DX150W-10/DX150W-10N DX150W-7B DX150W-9C/DX150W-9CN DX150WE-10/DX150WE-10N DX150WE-9C/DX150WE-9CN DX190-3B/DX200-3B DX200-9C (CN)/DX200-9C (CN) ACE DX205-10/DX205-10N DX205-10A/DX205-10NA DX210-7M DX210W-10/DX210W-10N DX210W-7B DX210W-9C (S/N:30001~) DX210W-9C/DX210W-9CN DX215-10/DX215-10N DX215-5B DX215-9C ACE/DX215-9CN ACE DX215-9C/DX215-9CN DX220LC-7M DX220LC-9C DX225-10 DX225CD-9C DX225LC-10 DX225LC-9C DX230LC-9C DX245HD-10 DX245LC-9C ACE DX260LC-9C DX270HD-10 DX270LC-9C ACE DX300LC-7B DX300LC-9C DX305HD-10 DX305LC-9C ACE DX340LC-9C DX360LC-3B DX360LC-7B DX360LC-9C DX380-10 DX380-9C ACE DX380HD-10 DX380LC-9C DX380LC-9C ACE DX400LC-7B DX450LC-3B/DX450LC-9C DX490LC-9C/DX500LC-9C/DX520LC-9C DX500-9C ACE/DX500LC-9C ACE/DX560LC-9C ACE DX500HD-10/DX560HD-10 DX500LC-9C (S/N:22001~22044) DX500LC-9C ACE/DX560LC-9C ACE (S/N:30001~) DX680HD-10 DX800HD-10 DX800LC-9C DX1000LC-7 STAGE5/TIER4 DX1000LC-7 TIER3 DX100W-7 DX100W-7 DX140A DX140LC DX140LC-5 DX140LC-5/DX160LC-5 DX140LC-5K(L) DX140LC-7/DX160LC-7 DX140LC-7K/DX160LC-7K DX140LCR DX140LCR-5 DX140LCR-5K(L) DX140LCR-7 DX140R DX140W/DX160W TIER-II DX140W/DX160W TIER-III DX140W-3/DX160W-3 DX140W-5 DX140W-5/DX160W-5 DX140W-5K(L)/ DX160W-5K(L)(S/N:2485~) DX140W-7/DX160W-7 DX150LC-7 DX150LC-7(S/N:2001~) DX150LCR-7 DX150W-7/DX170W-7 DX165W-5 DX165WR-7 DX170LC-5 DX170LC-7 DX170W-5 DX170W-7 DX170WR-7 DX180LC DX180LC-5 DX190W DX190W-5 DX190W-7 DX190WA(T-2) DX200A DX200A(S/N:1001~) DX200LC-7 DX210-7/DX210LC-7/DX210NLC-7 DX210W DX210W-5 DX210W-5B DX210W-5K(L) DX210W-7 DX210WA DX210WA(T-2) DX220A/DX225LCA DX220AF DX220AF(S/N:1001~) DX220AF-7M DX220LC-5 DX220LC-5K(L) DX220LCA DX220W-7 DX225LC (S/N 5433~) DX225LC-5 DX225LC-7 DX225LC-7M/DX225-7M DX225LC-7X DX225LCA(S/N:1001~) DX225LCA-7M/DX200A-7M DX225NLCA DX230LC DX235LC-5 DX235LC-7/DX245NHD-7 DX235LCR DX235LCR-5 DX235LCR-5 DX235LCR-5K(L) DX235LCR-7 DX235NLC-5 DX240LC-7 DX240LC-7X DX240LCR-7 DX255LC DX255LC-5 DX255LC-7 DX260LCA DX300LC DX300LC-5 DX300LC-5(S/N:1058~) DX300LC-5(S/N:20001~) DX300LC-5K(L) DX300LC-7 DX300LC-7K DX300LC-7M/DX320LC-7M DX300LCA DX300LCA-7M DX300LCE DX320LC-7 DX340LC DX340LC-5/DX350LC-5(S/N:10050~) DX340LC-5/DX350LC-5(S/N:20001~) DX340LCA DX340LCA-K/ DX360LCA-K(S/N:20001~) DX350LC DX350LC-7 DX350LC-7K DX350LCA/DX360LCA DX350LCR-7 DX360LC-7M DX360LCA(S/N:5950~) DX360LCA-7M DX380LC DX380LC-3 DX380LC-3(OCEANIA) DX380LC-5 DX380LC-5/DX400LC-5 DX380LC-5K(L) DX380LC-7 DX380LC-7K DX380LCA DX400LC-7 DX400LC-7M DX420LC DX420LC-5(S/N:10011~) DX420LC-7 DX420LC-7K DX420LCA DX420LCA DX420LCA-K(S/N:20001~) DX450LC-7M DX450LCA-7M DX480LC DX480LCA/DX500LCA DX480LCA/DX500LCA/DX520LCA DX480LCA-K/DX520LCA-K(S/N:20001~) DX490LC-5/DX530LC-5 DX490LC-5(S/N:10012~) DX490LC-7/DX530LC-7 DX490LC-7K/DX530LC-7K DX490LC-7M/DX530LC-7M DX490LCA-7M/DX530LCA-7M DX520LC/DX520LCA DX520LCA DX530LC-5(NT)(S/N:10025~) DX530LC-5(S/N:10007~) DX530LC-5(S/N:10056~) DX530LC-5B DX530LC-5K(L) DX550LC-7 DX650LC-7 DX700LC DX700LCA DX800LC-5B DX800LC-7 DX800LC-7 E100W E145 E145-7 E165 HW100A HX1000AL HX1000L HX355ALCR HX800AL HX800L	0.066KG	EA
301413-00287	DX120 DX140AF/DX140LCA DX150LC DX20Z-5/DX19Z-7B DX260LC DX300LC DX380LC DX140A DX140LC DX140LCR DX140R DX140W/DX160W TIER-II DX140W/DX160W TIER-III DX140W ACE PLUS(S/N:8141~) DX180LC DX190W DX190WA(T-2) DX200A DX200A(S/N:1001~) DX210W DX210WA DX210WA(T-2) DX220A/DX225LCA DX220AF DX220AF(S/N:1001~) DX220LCA DX225LC (S/N 5433~) DX225LCA(S/N:1001~) DX225NLCA DX230LC DX235LCR DX255LC DX260LCA DX300LC DX300LCA DX300LCE DX340LC DX340LCA DX340LCA-K/DX360LCA-K(S/N:20001~) DX350LC DX350LCA/DX360LCA DX360LCA(S/N:5950~) DX380LC DX380LCA DX420LC DX420LCA DX420LCA-K(S/N:20001~) DX480LC DX480LCA/DX500LCA DX480LCA/DX500LCA/DX520LCA DX480LCA-K/DX520LCA-K(S/N:20001~) DX520LC/DX520LCA DX520LCA DX700LC DX700LCA	0.2KG	EA