HSAF3/250 S

Article number: 30 309
  • Three-phase, two-stage surge arresters type T2+T3 equipped with high-frequency filters for serial connection.
  • Intended for protection of electronic appliances against the effects of switching, induced and residual overvoltage generated in LV power supply systems.
  • Remote monitoring is solved on the basis of a potential-free swithing contact.
  • Any installation position without affecting function and parameters.
  • Produced in basic version for mounting straight onto the switchboard’s construction by screws M8.
  • S indication specifies a version with remote monitoring.
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Test class according to EN 61643-11:2012 (IEC 61643-11:2011) T2, T3
System TN-C-S, TN-S
Number of poles
Rated operating AC voltage UN 230 V
Maximum continuous operating voltage AC UC 320 V
Rated load current IL 250 A
Open circuit voltage of the combination wave generator (L/N, L/PE) UOC 6 kV
Open circuit voltage of the combination wave generator (N/PE) UOC 10 kV
Voltage protection level at UOC (L/N) Up < 1.25 kV
Nominal discharge current for class II test (8/20) L/N, L/PE In 20 kA
Nominal discharge current for class II test (8/20) N/PE In 50 kA
Maximum discharge current (8/20) Imax 40 kA
Impulse discharge current for class I test (10/350) N/PE Iimp 50 kA
Total discharge current (8/20) L1+L2+L3+N->PE ITotal 50 kA
Asymmetrical attenuation of filter at f = 1.5 MHz > 70 dB
Asymmetrical attenuation of filter at f = 0.15 ÷ 30 MHz > 30 dB
Temporary overvoltage test (TOV) for tT = 5 s (L/N) UT 337 V
Temporary overvoltage test (TOV) for tT = 120 min (L/N) UT 440 V
Temporary overvoltage test (TOV) for tT = 0.2 s (N/PE) UT 1 200 V
Response time (L/N) tA < 25 ns
Response time (L/PE, N/PE) tA < 100 ns
Power dissipation at 20 °C Pz < 70 W
Maximal back-up fuse 250 A gL/gG
Residual current IPE ≤ 5 µA
Follow current interrupt rating (N/PE) Ifi 0.1 kArms
Lightning protection zone LPZ1, LPZ2, LPZ3
Housing material Steel plate 0.8 mm
Degree of protection IP20
Operating temperature ϑ - 40 ÷ 55 °C
Humidity range RH 5 ÷ 95 %
Recommended cross-section of connected conductors S 120 mm2
Clamp fastening range (solid conductor) 35 ÷ 240 mm2
Clamp fastening range (stranded conductor) 35 ÷ 240 mm2
Tightening moment 26
Installation Using the M8 screws on the chassis
Operating position Any
Product placement environment Internal
Signalling at the device None
Remote signalling Yes
Potential free signal contact (S) (recommended cross-section of remote monitoring max. 1 mm2) AC: 250 V / 0.5 A, DC: 250 V / 0.1 A
Includes EMI / EMC filter Yes
Modular design No
Lifetime > 100 000 h
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Ing. Aneta Sčebelová
 +420 494 942 314