油壓開關內藏微動開關，感應來自液壓系統的壓力傳達電氣信號，給電磁換向閥或電氣馬達使其改變切換方向或警告、關閉電路，以達到系統保護的效果HJCS-02N，HJCS-02NL，HJCS-02NLL，HMJCS-02BL，HMJCS-02PL，HJCD-02S, HMJCS-02A-N, HMJCS-03A-NLL, HMJCS-03B-NL, HMJCS-03P-NLL, HMJCS-02W, HMJCS-03W-NLL HIGH-TECH電磁換向閥DG4V-3-6C-U-L-B-60H，DG4V-3-8C-U-L-B-60H，DG4V-3-0A-U-L-B-60H，DG4V-3-2A-U-L-B-60H，DG4V-3-22A-U-L-B-60H，DG4V-3-2N-FW-L-B-60H， DG4V-3-0C-FW-L-B-60H，DG4V-3-2C-FW-L-B-60H，DG4V-3-3C-FW-L-B-60H， DG4V-3-6C-FW-L-B-60H，DG4V-3-8C-FW-L-B-60H，DG4V-3-0A-FW-L-B-60H， DG4V-3-2A-FW-L-B-60H，DG4V-3-22A-FW-L-B-60H，DG4V-5-2N-U-L-B-60H， DG4V-5-0C-U-L-B-60H，DG4V-5-2C-U-L-B-60H，DG4V-5-3C-U-L-B-60H， DG4V-5-6C-U-L-B-60H，DG4V-5-8C-U-L-B-60H，DG4V-5-0A-U-L-B-60H 溢流閥RV-01T-H，RV-02T-C，RV-10-T-H，RV-03-G-B，RV-06-T-H，RV-10-G-B，RV-10-T-B，RV-10-G-C，RV-04-T-C，RV-06-G-H，RV-04-T-H