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Surge Arrester – Type 1+Type 2

FLP12,5-275/1+1

FLP12,5-275/1S+1

Modular surge arrester for use in single-phase TT and TN systems (“1+1” circuit); with floating remote signalling contact.

  • Prewired complete unit consisting of a base part and plug-in protection modules
  • High discharge capacity due to heavy duty zinc oxide varistors / spark gaps
  • High reliability due to “Thermo Dynamic Control” SPD monitoring device
Surge-protection-device-SPDs-FLP12,5-275-series-OBO
Dimensions-FLP12,5-275-1S+1-OBO
Dimensions
Basic-circuit-diagram-FLP12,5-275-1S+1-OBO
Basic circuit diagram

Technical data

TypeFLP12,5-275/1+1FLP12,5-275/1S+1
SPD according to EN 61643-11 / IEC 61643-11type 1 + type 2 / class I + IItype 1 + type 2 / class I + II
Nominal a.c. voltage Un275 V AC (48/62 Hz)275 V AC (48/62 Hz)
Max. continuous operating a.c. voltage [L-N] Uc320 V AC (48/62 Hz)320 V AC (48/62 Hz)
Max. continuous operating a.c. voltage [N-PE] Uc255 V AC (48/62 Hz)255 V AC (48/62 Hz)
Nominal discharge current (8/20μs) In30 kA30 kA
Maximum discharge current (8/20μs) Imax60 kA60 kA
Lightning impulse current (10/350μs) [L-N] Iimp12,5 kA12,5 kA
Lightning impulse current (10/350μs) [N-PE] Iimp50 kA50 kA
Voltage Protection level [L-N] UP1,8 kV1,8 kV
Voltage Protection level [N-PE] UP1,5 kV1,5 kV
Follow current extinguishing capability [N-PE] Ifi100 Arms100 Arms
Response time [L-N] tA25 ns25 ns
Response time [N-PE] tA100 ns100 ns
Max. mains-side over-current protection160 A gL/gG160 A gL/gG
Short-circuit current rating ISCCR50 kArms50 kArms
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic335 V / 5 sec. – withstand335 V / 5 sec. – withstand
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic440 V / 120 min. – safe failure440 V / 120 min. – safe failure
Temporary overvoltage (TOV) [N-PE] (UT) – Characteristic1200 V / 200 ms – withstand1200 V / 200 ms – withstand
Range of operating temperatures (TU)-40/+80°C-40/+80°C
Operating state / fault indicationgreen / redgreen / red
Number of ports11
Cross-sectional area (min.)1.5 mm2 solid /flexible1.5 mm2 solid /flexible
Cross-sectional area (max.)35 mm2 stranded / 25 mm2 flexible35 mm2 stranded / 25 mm2 flexible
For mounting on35 mm DIN rail acc. to EN 6071535 mm DIN rail acc. to EN 60715
Enclosure materialthermoplasticthermoplastic
Place of installationindoor installationindoor installation

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