Surge arrester B+C 1P (T1+T2 AC) BY7-40/1-275 87.780

Overvoltage limiter BY7-40, catalog number 87.780. Its main task is to protect the electrical installation against switching overvoltages and lightning strikes. The limiter is adapted for mounting on a TH35 rail, it is 18 mm wide (size 1 of the 18 mm module). The main technical parameters confirmed by the CE declaration are: Iimp: 5kA, Imax: 40kA, In: 20kA, Uc: 275VAC, Up: 1.2kV.