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

More details

More info

" 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.



Other models available on request, please contact us.



Technical Data


Electrical characteristics   

SPD type

follow test IEC 61643-11

Network 277/480V
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 mode L/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  
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 (EN60715)
Housing material Thermoplastic UL94-V0
Operating temperature -40/+85°C
Protection rating IP20
Outdoor application No
Failsafe behavior Disconnection
Disconnection indicator 1 mechanical indicator
Spare module DSM40-480
Remote signaling of disconnection option DS41S-480 : output on changeover contact
Associated disconnection devices  
Thermal disconnector internal
Installation ground fault breaker Type `S` or delayed
Fuses Fuses Type gG - 50 A
Standards compliance  
Standards complianceIEC 61643-11 / EN 61643-11 / NF EN 61643-11 / UL1449 ed.4 
CertificationUL / CSA /GOST