Reference price :
Contact us
  • Series
  • Model
  • Brand / Made in
    CITEL / Pháp
  • 2-poles surge protector 48 Vdc
  • Type 1 + Type 2
  • In 30 kA / Imax 70 kA
  • Remote signaling
  • Iimp 7 kA
  • Pluggable Module
  • IEC 61643-11, EN61643-11 and UL1449 ed.5 compliance

DC power networks are used in more and more applications and the threat of disturbances due to surge voltages must be taking in to account like for AC power lines.
DS72R-48DC surge protectors are designed to protect equipment connected to DC power supplies from lightning surges. It is based on varistors matched to the network voltage 48Vdc, the varistors have thermal disconnection devices to control any end-of-life case.

DS72R-48DC is DIN rail compatible and is connected in parallel on the line to be protected.


  • SPD type: 1+2
  • Network: 48Vdc
  • Nominal line voltage Un: 48 Vdc
  • Nominal DC voltage Un-dc: 48 Vdc
  • Max. DC operating voltage Uc: 65 Vdc
  • Operating current Ic: < 0.1 mA
  • PV Permanent Operating current Icpv: < 0.1 mA
  • Follow current If: None
  • Nominal discharge current In: 30 kA
  • Max. discharge current Imax: 70 kA
  • Total Maximum discharge current    Imax Total: 140 kA
  • Impulse current by pole Iimp: 7 kA
  • Total lightning current    Itotal: 14 kA
  • Connection mode(s): +/-/PE
  • Protection mode(s): Common mode/Differential mode
  • Protection level +/PE (-/PE) Up: 300 V


  • Technology: MOV
  • SPD configuration: 2-poles
  • Connection to Network: By screw terminals: 4-25mm²
  • 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 from DC network
  • Disconnection indicator: 2 mechanical indicators
  • Spare module(s): DSM70R-48DC
  • Remote signaling of disconnection: DS72RS-48DC option : output on changeover contact
  • Dimensions: See diagram
  • Weight: 0.204 kg


  • Standards compliance: IEC 61643-11 / EN 61643-11 / UL1449 ed.5


  • Thermal disconnector: Internal
  • Fuses: 100 A min. - 125 A max. - Fuses type gG


DS72R-48DC surge protectors are connected in parallel on the DC network and must be equipped with external fuses for short-circuit current protection

  • 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.

Other products in the same category



No products in your cart
Báo Giá Sản Phẩm