Type 1 surge arrester FV50B+C/2-275(S)

remote signalingsingle-phaseAC

1.Description Fatech Class I+II lightning and surge arresters, is suitable for TT and TN earthing systems. 3P+N construction lightning and surge arresters based on large power metal oxide varistors and assemble a metal oxide varistor and a gas discharge tube in series between phase line and neutral line, with no follow current. 2. Characteristics 1) type 1+2 surge arrestors consisting of 2pcs SPD. 2) 1pc Spark Gap based SPD + 1pc MOV based SPD. 3) Low residual voltage and quick response. 4) Reliable control thanks to Thermo Dynamic Control disconnector. 5) With remote signaling contact for control device. 6) Fault indication via red mark in the inspection window. 7) Protection mode: L1-N, L2-N, N-PE. 3. Electrical Parameters 1) Test class IEC/EN/VDE: Class I+II/B+C/T1+T2 2) Protection mode: L1-N, L2-N, N-PE 4) Nominal voltage 50(60)Hz Un: 220V~ 5）Rated Voltage (Max.Cont. Operating Voltage) Uc: 275V~ 6) Impulse current (10/350μs) Iimp: 50kA 7) Nominal discharge current (8/20μs) In: 50kA 8) Response time tA: Class B: ≤100ns; Class C: ≤25ns 9) Recommended back-up fuse: 160A 10) I/O Connections: By screw terminal:10-35mm2; By connection bus 11) Mounting: Symmetrical rail (EN50022/DIN46277-3) 12) Operation temperature range / humidity / altitude: -40℃~+80℃/30%~90%/3000m 13) Degree of protection: IP20 14) Housing material: UL94V0 15) Disconnection indicator: Mechanical indicator (Green: OK, Red: replace) 16) Remote control contact: Yes 17) Thermal Disconnector: Internal