1-Pole 75 Vdc surge protector
Part Number: 330621
  • 1-pole 75 Vdc surge protector
  • In 20 kA / Imax 40 kA
  • Pluggable module
  • Remote signaling
  • IEC 61643-11, EN 61643-11 , UL1449 ed.4 compliance
Installation Sheet

DS4xS-75DC surge protectors are designed to protect equipment connected to DC power supplies from lightning surges.

SPD type
following IEC test
1 ou 2
48 Vdc
Nominal line voltage
75 Vdc
Max. AC operating voltage L-N
100 Vdc
Operating current
Continious current at Uc
< 0.1 mA
Follow current
Nominal discharge current
15 x 8/20 µs impulses
20 kA
Max. discharge current
max. withstand @ 8/20 µs by pole
40 kA
Connection mode(s)
+/PE or -/PE
Protection mode(s)
Common mode
Protection level
@ In (8/20µs)
390 V
Protection level L/N
@ In (8/20µs)
390 V
Protection level L/PE
@ In (8/20µs)
390 V
Technology MOV
SPD configuration 1-pole
Connection to Network by screw terminals: 4-25 mm²
Plug-in modular box
Symmetrical rail 35 mm (EN60715)
Housing material Thermoplastic UL94-V0
Operating temperature -40/+85°C
Protection rating IP20
Outdoor application
Failsafe behavior Disconnection
Disconnection indicator 2 mechanical indicators
Spare module(s)
Remote signaling of disconnection
Output on changeover contact
See diagram
Standards compliance
IEC 61643-11 / EN 61643-11 / UL1449 4ed.
Thermal disconnector Internal
Fuses type gG - 50 A