The Relpol RSP-CL-PT100 is configured with surge protector - surge protection for 2 pairs or 4 signal lines in a measurement and control system. Surge protection in IT and industrial systems with temperature monitoring capability. Rated operating voltage: 24 V DC. Maximum continuous operating voltage: 33 V DC / 23.3 V AC. Surge protection components: 2-stage protection circuit, spark gap arrester, TVS diode.
The protection capability of RSP-CL-PT100 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.