The Relpol RSP-CL-TTL is surge arrester for surge protection in DC systems such as sensors, power supply, and communication. Surge protection for 4 lines with a common reference potential in low bandwidth or low frequency signals, data and communication systems, or DC power systems. Rated operating voltage: 24 V DC. Maximum continuous operating voltage: 33 V DC/ 23.3 V AC.
The protection capability of RSP-CL-TTL is defined by the surge-current, operating-voltage, pole and class/type values stated above. Those exact ratings should be matched to the protected AC installation and its required lightning/surge protection level.