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FATECH surge arrester FV50B/4-320 for AC power supply system

FATECH surge arrester FV50B/4-320 for AC power supply system

Product catalog summary
Overview: The document provides technical specifications and features of the FV50B/4 surge protective device designed for low-voltage power systems. It highlights the unique seal construction, operational features, and application areas.
Specifications:
  • Unique multilayer spark gap design with no external spark emission.
  • Includes a working status indication window and optional remote control contacts.
  • Available in various maximum continuous operating voltages: 150V~, 255V~, 275V~, 320V~, 385V~.
  • Designed for use in lightning protection zones (LPZ) 0 to 1, suitable for building entrance lines, elevators, and mineral applications.
  • 3-phase, 4-pole configuration.
Remote Control Contact Port Definition:
  • AC: U ≤250Vmax, I ≤0.5Amax, single-core wire max ≤1.5mm².
  • DC: U ≤60Vmax, I ≤0.1Amax, multi-core wire max ≤1.3mm².

Note: Models without 'S' lack remote control contact functionality.

Model Variants:
  • FV50B/4-150(S)
  • FV50B/4-255(S)
  • FV50B/4-275(S)
  • FV50B/4-320(S)
  • FV50B/4-385(S)
Technical Parameters:
  • Test Class: IEC/EN/VDE Class I/B
  • Network Type: TT, TN
  • Protection Mode: L1, L2, L3, N-PE
  • Nominal Voltage: 110/220V~ to 220/380V~
  • Impulse Current (10/350μs): 50kA
  • Nominal Discharge Current (8/20μs): 50kA
  • Voltage Protective Level: Up ≤1.8kV to ≤2.0kV
  • Response Time: tA ≤100ns
  • Recommended Back-up Fuse: 500A
  • Isolation Resistance: >10 MΩ
Installation and Environmental Conditions:
  • I/O Connections: L-N multi-core wire 10mm² ~ 25mm², PE multi-core wire >16mm²
  • Mounting: 35mm Symmetrical rail (EN50022/DIN46277-3)
  • Operating Temperature Range: -40℃ to +80℃
  • Humidity: 30% to 90%
  • Altitude: Up to 3000m
  • Degree of Protection: IP20
  • Housing Material: UL94 V-0
  • Disconnection Indicator: Mechanical (Green: OK, Red: Replace)
  • Remote Control Contact: Optional
See more

Catalog excerpts

FATECH surge arrester FV50B/4-320 for AC power supply system-1

Surge Protective Device for Low-voltage Power System ♦ Adopt unique designed seal construction with multilayer spark gap, no spark emission outside the housing. ♦ With working status indication window, and remote control contacts. ♦ Max.continuos operating voltage(Uc)150V~,255V~, 275V~,320V~,385V~for your option. ♦ Mainly used in lightning protection zone (LPZ) 0 to 1, widely used in building entrance lines elevator, mineral, and so on. ♦ 3 phase,4 poles. Remark: if the model number is without“S”, the model is without remote control contact function

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.