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  • Series
  • Model
  • Brand / Made in
  • Type 1 + 2+3 AC surge protector
  • Network: 230/400 V 3-phase+N
  • VG Technology (MOV+GSG)
  • Iimp: 25 kA (10/350µs)
  • Imax: 100 kA (8/20µs)
  • Optimized to TOV
  • No leakage current
  • Monobloc, compact design
  • Remote signaling of disconnection
  • EN 61643-11, IEC 61643-11 complied

DACN1-25CVGS series

The "Surge protector" solution to protect and analyse your installations

The new SPDs DACN1-25CVGS are the designated successors to the existing DS250 and DUT250 series. As such, these surge protectors feature a number of evolutionary improvements, such as the more compact housing, dual disconnect mechanism and remote signaling. 

Typical applications

The new DACN1-25CVGS are designed for use on the AC side in critical infrastructures, large industrial installations and important installations for professional use which require closer monitoring and are very likely to be exposed to frequent overvoltages in order to avoid downtime or need to be monitored regularly/annually in accordance with IEC 62305-3, E7.
For example: hospitals and medical establishments, broadcasting and mobile communication networks, electricity suppliers, street cabinets, venues for major events/stadiums, industrial production sites, etc.

Electrical Characteristics

  • SPD type: 1+2+3
  • Network: 230/400 V 3-phase+N
  • AC system: TT-TNS 
  • Max. AC operating voltage Uc: 275 Vac
  • Temporary Over Voltage (TOV) Charasteristics - 5 sec (Without disconnection) UT: 335 Vac withstand
  • Temporary Over Voltage (TOV) Charasteristics - 120 mn (Without disconnection or with safety disconnection) UT: 440 Vac withstand
  • Residual Current (Leakage current to Ground) Ipe: None
  • Follow current If: None
  • Nominal discharge current (15 x 8/20 µs impulses) In: 25 kA
  • Max. discharge current (max. withstand @ 8/20 µs by pole) Imax: 100 kA
  • Impulse current by pole (max. withstand 10/350µs by pole) Iimp: 25 kA
  • Total lightning current (max. total withstand @ 10/350µs) Itotal: 100 kA
  • Withstand on Combinaison waveform IEC 61643-11 Class III test: 1.2/50µs - 8/20µs Uoc: 6 kV
  • Protection level @ In (8/20µs) and @ 6 kV (1,2/50 µs) Up: 1.5 kV
  • Admissible short-circuit current Isccr: 50000 A

Mechanical Characteristics

  • Technology: VG Technology (MOV+GSG)
  • SPD configuration: 3-phase+Neutral
  • Connection to Network: By screw terminals: 2.5-25mm² (35mm² rigid)
  • Format: Monobloc modular box
  • Mounting: Symmetrical rail 35 mm (EN60715)
  • Housing material: Thermoplastic UL94-V0
  • Operating temperature: -40/+85°C
  • Protection rating: IP20
  • Failsafe mode: Disconnection from AC network
  • Disconnection indicator: 1 mechanical indicator - Red/Green
  • Remote signaling of disconnection: Output on changeover contact
  • Wiring for remote signaling: 1.5 mm² max.
  • Max. Voltage/Current for remote signaling: 250 V / 0.5 A (AC) / 30 V / 3 A (DC)


  • Thermal disconnector: Internal
  • Installation ground fault breaker: Type S or delayed
  • Back-up protection device: 125 A min. - 315 A max. - Fuses Type gG


  • Standards compliance: IEC 61643-11 / EN 61643-11


DACN1-25CVGS-31-275 Type 1+2+3 AC surge protector is connected in parallel on the AC network and must be equipped with external fuses for short-circuit current protection

  • The total length of parallel connection wires to AC 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. 
  • 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.
  • The cross sectional wire must be 6 mm² minimum for Type 2 SPD and 16 mm² for Type 1.
  • Local earthing resistance must be in compliance with the electrical rules.


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