CITEL – DLA-170 1-pair DIN-rail plug-in TEL/ADSL surge protector

DLA surge protectors are designed to protect, against surge voltages due to lightning, terminals equipment connected to industrial buses, telecom lines or data lines. These surge protectors must be installed on symmetrical DIN rail and are available for most of the transmission lines: line voltage from 6 to 170V, bitrate up to 10 Mbit/s. D3 types aim to realize fine protection and D2 types is specific for floating application. These products are 1-pair surge protectors with removable module for easy maintenance.



  • Network: RTC, ADSL2, VDSL2
  • Nominal line voltage Un: 150 V
  • Max. DC operating voltage Uc: 170 Vdc
  • Max. frequency f max.: > 10 MHz
  • Insertion loss: < 1 dB
  • Max. load current IL: 300 mA
  • Max. discharge current by pole Imax: 20 kA
  • Line inductance: No
  • Protection level L/L Up: 220 V
  • Protection level L/PE Up: 20 V
  • Impulse current Iimp: 5 kA
  • Nominal discharge current In: 5 kA
  • Line resistance: < 4.7 Ohm


  • Technology: GDT+Clamping diode
  • SPD configuration: 1 pairs + shielded
  • Connection to Network: By screw terminal: cross section 0.4-1.5mm²
  • Mounting: Symmetrical rail 35 mm (EN 60715)
  • Housing material: Thermoplastic UL94 V-0
  • Operating temperature: -40/+85°C
  • Protection rating: IP20
  • Failsafe mode: Short-circuit
  • Spare module(s): DLAM-170
  • Dimensions: See diagram


  • Standards compliance: IEC 61643-21 / EN 61643-21 / UL497A

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