Project Description



Integral housing combined lightning current and surge arrester for protecting power supply system against surges.

  • Prewired spark-gap-based type 1 and type 2 combined lightning current and surge arrester
  • Maximum systems availability due to RADAX Flow follow current limitation
  • Capable of protecting terminal equipment
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SPD according to EN 61643-11 / IEC 61643-11type 1 + type 2 / class I + class II
Energy coordination with terminal equipment (< 5m)type 1 + type 2 + type 3
Nominal a.c. voltage (Un)120 V AC (50/60 Hz)
Max. continuous operating a.c. voltage (Uc)150 V AC (50/60 Hz)
Lightning impulse current (10/350μs) [L-PE] (Iimp)25 kA
Specific energy [L-PE] (W/R)156,25 kJ/ohms
Nominal discharge current (8/20μs) [L-PE] (In)25 kA
Voltage protection level [L-PE] (Up)1,5 kV
Follow current extinguishing capability a.c. (Ifi)50 kArms
Follow current limitation / Selectivityno tripping of a 20 A gL/gG fuse up to 50 kArms (prosp.)
Response time (tA)< 100 ns
Max. backup fuse (L) up to IK = 50 kArms315 A gL/gG
Max. backup fuse (L-L’)125 A gL/gG
Temporary overvoltage (TOV) (UT) – Characteristic230 V / 120 min. – withstand
Range of operating temperatures [parallel] / [series] (TU)-40…+80°C / -40…+60°C
Operating state / fault indication
Number of ports1
Cross-sectional area (L, L’, PE) (min.)10 mm2 solid /flexible
Cross-sectional area (L, PE) (max.)50 mm2 stranded / 35 mm2 flexible
Cross-sectional area (L’) (max.)35 mm2 stranded / 25 mm2 flexible
For mounting on35 mm DIN rail acc. to EN 60715
Enclosure materialthermoplastic
Place of installationindoor installation
Degree of protectionIP20
Capacity2 module(s), DIN 43880