1 phase Class I 50kA Spark Gap Surge Arrester with Remote and Indicator


-1 phase Class I 50kA surge arresterwith remote control contacts,
- With indication window,
- Compact design,
-Used in the lightning protection zones concept at boundary LPZ0B-LPZ1,
-The core parts are spark gap with high discharge capacity,
-35mm2 DIN-rail in accordance with EN 50022/DIN46277-3,
-Low residual voltage and quick response.
-Protection mode: L-N / L-PE / N-PE.
1.Dimension of surge arrester FV50B/2-xxxS

2.Electrical parametersofsurge arresterFV50B/1-xxxS

Model No.   FV50B/2-150S FV50B/2-255S FV50B/2-275S FV50B/2-320S FV50B/-385S
Test class according to IEC61643-11:2011 I
Type of Network TT-TN-IT
Nominal voltage UN 110/220V 220/380V
Rated Voltage (Max. Cont. Operating Voltage) Uc 150VAC 255VAC 275VAC 320VAC 385VAC
Impulse current (10/350μs) Iimp 50kA 50kA 50kA 50kA 50kA
Nominal discharge current (8/20μs) In 50kA 50kA 50kA 50kA 50kA
Voltage protective level at 25kA Up ≤1.8kV ≤1.8kV ≤1.8kV ≤2.0kV ≤2.0kV
Isolation resistance Risol >102 >102 >102 >102 >102
Response time tA ≤100ns ≤100ns ≤100ns ≤100ns ≤100ns
Recommended back-up fuse 250A
I/O Connections By screw terminal:10-35mm2
By connection bus
Mounting Symmetrical rail (EN50022/DIN46277-3)
Operation temperature range / RH -25℃~+85℃/95%
Degree of protection IP20
Encapsulated Encapsulated
Housing material UL94V0
Disconnection indicator Mechanical indicator (Green: OK, Red: replance)
Remote control contact Optional
Color gray

3. Test record photo

For asking test vedio, please contact us directly by phone, or send email to sales@fatech-surge-protection.com.

4. Installation ofsurge arresterFV25B/2-XXX S


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