Type 2 AC surge protector - unipolar
DS71RS-120
DS71RS-120
Part Number: 321611
  • Re-inforced Type 2 AC surge protector
  • In : 30 kA
  • Imax : 70 kA
  • Pluggable module by phase
  • Remote signaling
  • IEC 61643-11, EN 61643-11 compliance
  • UL1449 ed.3 approved

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 120/208 V
Nominal line voltage Un 120 Vac
Max. AC operating voltage L-N Uc 150 Vac
Temporary Over Voltage (TOV) Charasteristics - 5 sec. UT 180 Vac withstand
Temporary Over Voltage (TOV) Charasteristics - 120 mn UT 230 Vac disconnection
Residual Current Ipe < 1 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 70 kA
Connection mode(s) L/N or N/PE
Protection mode(s) Common Mode or Differential Mode
Protection level Up 1 kV
Residuel voltage at 5 kA Up-5kA 0.6 kV
Residual voltage at 10 kA Up-10kA 0.7 kV
Admissible short-circuit current Isccr 25000 A
Technology MOV
SPD configuration 1-pole
Connection to Network By screw terminals: 2.5-25 mm² / by bus
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
Disconnection indicator 2 mechanical indicators by pole
Spare module(s) DSM70R-120
Remote signaling of disconnection Output on changeover contact
Dimensions See diagram
Weight 0.12 kg
Standards compliance IEC 61643-11 / EN 61643-11 / UL1449 4ed.
Certification UL / EAC / TUV
Thermal disconnector Internal
Installation ground fault breaker Type 'S' or delayed
Fuses Fuses Type gG - 100 A min. – 125 A max.– Type gG