Surge Protector AC - unipolar 40Ka

64,80 € tax incl.

Unipolar AC surge protector to protect your system.

  • Type 2 AC surge protector,
  • Operating voltage: 530 V  AC,
  • Nominal discharge current : 20KA,
  • Max. discharge current : 40KA, 
  • Pluggable module for each phase,
  • Remote signaling option,
  • NF EN 61643-11, CEI 61643-11 compliance,
  • UL1449 ed.4

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" Unipolar Type 2 AC surge protector to protect your system. "

DS40 type2 AC surge protector are used mainly for primary protection of single and 3- phase networks at the main electrical panel.
This SPD is based on high energy varistor equipped with thermal disconnector and failure indicator, to comply with standards.

Type 1 and Type 2 SPD - Installation and rules

VG Technology surge protectors for AC power line and photovoltaic system

Other models available on request, please contact us.

Technical Data

Electrical characteristics

SPD type

follow test IEC 61643-11

Nominal line voltageUn277 Vac
Max. AC operating voltageUc530 Vac

Temporary Over Voltage (TOV) Charasteristics - 5 sec.

without disconnection

UT700 Vac withstand

Temporary Over Voltage (TOV) Charasteristics - 120 mn

without disconnection or with safety disconnection

UT920 Vac disconnection

Temporary Over Voltage N/PE (TOV HT)

without disconnection or with safety disconnection


Operating current

LeakAge current at Uc

Ic< 1 mA
Follow currentIfNone

Nominal discharge current

15 x 8/20 µs impulses

In20 kA

Max. discharge current

max. withstand @ 8/20 µs by pole

Imax40 kA

Total Maximal discharge current

max. total withstand @ 8/20 µs

Imax Total-
Admissible short-circuit currentIsccr25000 A
Connection modeL/PE and N/PE
Protection mode(s)CM or DM
Protection levelUp2.5 kV

Protection level

@In (8/20µs) and @ 6kV (1.2/50µs)

Up2.5 kV

Protection level L/PE

for multipolar surge protector

Up L/PE-
Mechanical characteristics
SPD configuration1-pole
Connection to NetworkBy screw terminals: 2.5-25 mm² / by bus
FormatPlug-in modular box
MountingSymmetrical rail 35 mm (EN60715)
Housing materialThermoplastic UL94-V0
Operating temperature-40/+85°C
Protection ratingIP20
Outdoor applicationNo
Failsafe behaviorDisconnection
Disconnection indicator1 mechanical indicator
Spare moduleDSM40-480
Remote signaling of disconnectionoption DS41S-480 : output on changeover contact
Associated disconnection devices
Thermal disconnectorinternal
Installation ground fault breakerType `S` or delayed
FusesFuses Type gG - 50 A
Standards compliance
Standards complianceIEC 61643-11 / EN 61643-11 / NF EN 61643-11 / UL1449 ed.4
CertificationUL / CSA /GOST