Type 2 AC surge protector - 3-phase
DS74R-230
DS74R-230
Part Number: 491502
  • Re-inforced Type 2 AC Multipolar surge protector
  • In: 30 kA
  • Imax total: 280 kA
  • Pluggable module by phase
  • Remote signaling option
  • IEC 61643-11, EN 61643-11 compliance
  • UL1449 ed.4 appoved
Installation Sheet Range Technical Sheet

DS70R type 2 AC surge protector are used mainly for primary protection of single and three-phase networks at the main electrical panel. They provide common-mode protection and are available in one-phase, single-phase, 3-phase and 3-phase+Neutral. This SPD is based on association of high energy varistors equipped with thermal disconnector and failure indicator, to comply with standards. The DS70R surge protectors are designed to be used in a multipolar configuration to protect single-phase, 3-phase or 3-phase+N AC networks. Each pole of the SPD is connected between Line(s) and PE and Neutral and PE.


SPD type 2
Network 230/400 V 3-phase+N
AC system TNS
Nominal line voltage Un 230 Vac
Max. AC operating voltage L-N Uc 255 Vac
Temporary Over Voltage (TOV) Charasteristics - 5 sec. UT 335 Vac withstand
Temporary Over Voltage (TOV) Charasteristics - 120 mn UT 440 Vac disconnection
Residual Current Ipe < 4 mA
Operating current Ic < 1 mA
Follow current If None
Nominal discharge current In 30 kA
Max. discharge current Imax 70 kA
Total Maximal discharge current Imax Total 280 kA
Connection mode(s) L/PE and N/PE
Protection mode(s) Common mode
Residuel voltage at 5 kA Up-5kA 0.9 kV
Protection level N/PE Up N/PE 1.4 kV
Protection level L/PE Up L/PE 1.4 kV
Residual voltage at 10 kA Up-10kA 1 kV
Admissible short-circuit current Isccr 25000 A
Technology MOV
SPD configuration 3-phase+Neutral
Connection to Network By screw terminals: 2.5-25 mm² / by bus
Format Plug-in modular box
Mounting Symmetrical rail 35 mm (EN60715)
Housing material Thermoplastic UL94-V0
Operating temperature -40/+85°C
Protection rating IP20
Failsafe mode Disconnection
Disconnection indicator 2 mechanical indicators by pole
Spare module(s) DSM70R-230
Remote signaling of disconnection option DS74RS-230 : output on changeover contact
Dimensions See diagram
Standards compliance IEC 61643-11 / EN 61643-11 / UL1449 4ed.
Certification UL / CSA /EAC