Type 2 AC surge protector - 3-phase+N
DAC50VG-31-320
DAC50VG-31-320
Part Number: 821130334
  • Type 2 + 3 AC surge protector
  • VG Technology
  • In : 20 kA
  • No leakage current
  • Pluggable module for each phase
  • Remote signaling (option)
  • Optimized to TOV
  • EN 61643-11, IEC 61643-11 and UL1449 ed.4 compliance

The pluggable surge protectors Type 2+3 DAC50VG, are designed to protect AC powerline at the main switchboard of the installation. Equipped with the exclusive CITEL’s VG technology, the range achieves an improved protection level and a total absence of leakage current, guaranteeing a maximum protection efficiency, a simplification of use (no additional SPD required) and a maximum lifetime. The surge protectors DAC50VG, are available in multipolar version and in several voltages to protect single or 3-phase networks.


SPD type 2+3
Network 230/400 V 3-phase+N
AC system TT-TNS
Max. AC operating voltage L-N Uc 320 Vac
Temporary Over Voltage (TOV) Charasteristics - 5 sec. UT 335 Vac withstand
Temporary Over Voltage (TOV) Charasteristics - 120 mn UT 440 Vac disconnection
Temporary Over Voltage N/PE (TOV HT) UT 1200 V/300A/200 ms withstand
Residual Current Ipe None
Follow current If None
Nominal discharge current In 20 kA
Max. discharge current Imax 50 kA
Total Maximal discharge current Imax Total 50 kA
Withstand on Combination waveform IEC 61643-11 Uoc 6 kV
Connection mode(s) L/N and N/PE
Protection level L/N Up L/N 1.5 kV
Residual voltage L/N at 5 kA Up-5kA 0.9 kV
Protection level N/PE at 5 kA Up-5kA 0.9 kV
Admissible short-circuit current Isccr 50 000 A
Technology MOV+GDT
SPD configuration 3-phase+Neutral
Connection to Network By screw terminals: 2.5-25 mm² (35 mm² rigid)
Format Plug-in modular box
Mounting Symmetrical rail 35 mm (DIN 60715)
Housing material Thermoplastic UL94-V0
Operating temperature Tu -40/+85°C
Protection rating IP20
Failsafe mode Disconnection from AC network
Disconnection indicator 1 mechanical indicator by pole - Red/Green
Spare module(s) MDAC50VG-320+MDAC50G-320
Remote signaling of disconnection option DAC50VGS-31-320: output on changeover contact
Wiring for remote signaling 1.5 mm² max.
Maw. Voltage/Current for remote signaling 250 V / 0.5 A (AC) / 30 V / 3 A (DC)
Dimensions See diagram - 4TE (EN43880)
Weight 0.340 kg
Standards compliance UL1449 ed. 4
Certification IEC 61463-11 / EN 61643-11
Thermal disconnector Internal
Installation ground fault breaker Type 'S' or delayed
Fuses 50 A mini. - 160 A max. - Fuses Type gG