The Relpol RSP-E25-30 is surge arrester for AC installations, rated voltage 230 V AC. Plug-in design, class I+II (T1+T2), number of poles 3. Peak current Iimp 25kA 10/350, max. discharge current Imax 100kA, rated discharge current 25 kA. For three-phase network 3+0 Uc 275VAC. MOV technology with potential-free contact for remote fault signalling. Width 36 mm per pole.
The protection capability of RSP-E25-30 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.