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DLA2-06D3

SPD for telecommunication systems

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For protecting telecommunication systems, FRTgroup offers surge protection devices of various configurations from the world leader – Citel (France).

Telecommunication and data transmission devices (PBX, modems, data terminals etc.) are becoming increasingly vulnerable to lightning-induced voltage surges. These devices are becoming more complex, sensitive and share a common grounding connection with other networks. This situation increases the risk for these sensitive devices to be stressed by destructive surge voltages, induced by lightning or by electrical switching operations.

Surge protectors for telecom and data transmission terminals could be divided in 3 types:

  • Surge protectors for telecom networks (PBX, modems, data terminals etc.)
  • Surge protectors for industrial networks (telemechanics, telemetry, etc.)
  • Surge protectors for Local Area Networks (data lines)

All Citel telephone and data line surge protectors are based on reliable multistage hybrid design that combines a high discharge current capacity with fast response time. All Citel telephone and data line surge protectors use a combination of a 3-electrode gas discharge tube and fast clamping diodes, in order to provide:

  • A nominal discharge current (repeated without destruction) greater than 5 kA 8/20 µs impulse
  • An ultrafast response time < 1 ns
  • Safety operation in end of life (Fail-safe behaviour) (end of life Mode 2 following EN 61643-21)
  • Low insertion losses to not disturb the transmission signal.
Series Network Connection to network Configuration Nominal line voltage Max. DC operating voltage Iimp In/Imax
DLA ADSL2,  SDSL, Fipway,  WorldFIP,  FieldBus-h2,  4-20 mA,  ISDN-TO,  RS232,  RS485,  MIC/T2,  10BaseT,  RS422,  phone line, line 48 V
Screw terminal  1 or 2 pairs
6 – 150 V 8 – 170 V 5 kA 5 kA/20 kA
DLU ADSL, SDSL, SHDSL, VDSL2,  Fipway, WorldFIP, FieldBus-H2, Profibus-PA, 4-20 mA, ISDN-TO, Profibus-FMS, Interbus, FieldBus-H1, Batibus, RS232, RS485, MIC/T2, 10BaseT, RS422, line 6, 24, 48 V, phone line
Screw terminal  1 or 2 pairs
6 – 150 V 10 – 170 V 5 kA 5 kA/20 kA
DLC ADSL2, SDSL, Fipway, RNIS-TO, WorldFIP, FieldBus-H2, LS, 4-20 mA, RS232, RS485, MIC/T2, 10BaseT, RS422, line 48 V, phone line
By spring 1 pairs
6 – 150 V 8 – 170 V 2,5 kA 5 kA/10 kA
E280 ADSL, SDSL, Fipway, ISDN-TO, SHDSL, K20, LS, 4-20 mA, RS232, RS485, RS422, MIC/T2, 10BaseT, line 48 V, phone line
6 – 150 V 8 – 170 V 2,5 kA 5 kA/10 kA
Bx80 ADSL, SDSL, Fipway, RNIS-TO, ISDN-TO, SHDSL, LS, 4-20 mA, RS232, RS485, RS422, MIC/T2, 10BaseT, phone line
1, 2 or 4 pairs
6 – 150 V 8 – 170 V 2,5 kA 5 kA/20 kA
MJ RTC, ADSL2, SDSL, ISDN, RTC, SHDSL, VDSL  RJ11 connector female input/output
RJ45 connector female input/output
1, 2 or 4 pairs
48 V DC, 150 V DC 60 V DC, 170 V DC 0,5 kA 2 kA/0,5 kA