The Relpol RSP-E25-11 is surge arrester for AC installations, rated voltage 230 V AC. Plug-in design, class I+II (T1+T2), number of poles 2. For L-N, peak current Iimp 25 kA 10/350, max. discharge current Imax 100 kA, rated discharge current 25 kA. For N-PE, peak current 50KA 10/350, max. discharge current 100 kA, rated current 50 kA. For single-phase network 1+1 Uc 275VAC. MOV varistor protection for L-N, GDT for N-PE. Limiter with potential-free contact for remote fault signalling. Width 36 mm per pole.
The protection capability of RSP-E25-11 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.