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  • Series
  • Model
  • Brand / Made in
  • Type 2 surge protector for photovoltaic
  • VG technology
  • 1500 Vdc
  • No leakAge, no operating currents
  • Improved life expectancy
  • In/Imax : 15 / 40 kA
  • Common/Differential mode protection
  • Remote signaling (option)
  • UTE C61-740-51, EN 50539-11 compliance

DS50VGPV-G/51 are type 2 surge protectors are designed to protect against lightning surge voltages in photovoltaic power supply network. The DS50VGPV-G/51 SPDs incorporates CITEL's exclusive patented 'VG technology' guarantying a total absence of leakAge current and maximum reliability.

They comply with the European standard EN50539-11. The products are designed to be mounted on a DIN rail. The plug-in protection module allows quick replacement in the event of a failure. The protective circuit with VG technology consists of a Y-diagram composed of Gas Discharge Tube and high-power varistors. The absence of leakage current prevents the surge protection from aging. The DS50VGPVS is available with a status indicator and remote signaling.


  • SPD type: 2
  • Network: PV network 1250 Vdc
  • Nominal PV voltage Uocstc: 1250 Vdc
  • Max. PV operating voltage Ucpv: 1500 Vdc
  • Residual Current Ipe: None
  • PV Permanent Operating current Icpv: None
  • Follow current If: None
  • Nominal discharge current In: 15 kA
  • Max. discharge current Imax: 40 kA
  • Total Maximum discharge current: 60 kA
  • Current withstand short circuit PV Iscpv: 15000 A
  • Connection mode(s): +/-/PE
  • Protection mode(s): Common/Differential mode
  • Protection level +/- Up: 6.8 kV
  • Protection level +/PE (-/PE) Up: 3.4 kV


  • Technology: VG Technology (MOV+GSG)
  • Connection to Network: By screw terminals: 2.5-25mm²
  • Format: Plug-in modular box
  • Mounting: Symmetrical rail 35 mm (EN 60715)
  • Housing material: Thermoplastic UL94 V-0
  • Operating temperature: -40/+85°C
  • Protection rating: IP20
  • Outdoor application: No
  • Failsafe mode: Disconnection SPD of the PV line
  • Disconnection indicator: 2 mechanical indicators
  • Spare module(s): DSM50VGPV-1500G/51
  • Remote signaling of disconnection: Option DS50VGPVS-1500G/51 - output on changeover contact
  • Dimensions: See diagram


  • Standards compliance: EN 61643-31 / EN 50539-11
  • Certification: EAC


  • Thermal disconnector: Internal
  • Fuses: without


DS50VGPV-1500G/51 surge protectors are connected in parallel on the DC network 

  • The total length of parallel connection wires to DC network must be lower than 0.5 m in order not to increase the protection level (Up) provided by the SPD.
  • Wiring is made by screw connections. On some models, a distribution bus can be used.
  • The protection wire coming from the SPD must be connected to the bonding bar of the electrical panel. Paralleling the protection wire with phases conductors must be avoided.
  • Local earthing resistance must be in compliance with the electrical rules.




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