2-Pole 75 Vdc surge protector
DS42S-75DC
DS42S-75DC
Part Number: 460621
  • 2-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 1 ou 2
Network 48 Vdc
Nominal line voltage Un 75 Vdc
Max. AC operating voltage L-N Uc 100 Vdc
Operating current Ic < 0.1 mA
Follow current If None
Nominal discharge current In 20 kA
Max. discharge current Imax 40 kA
Impulse current by pole Iimp 4 kA
Connection mode(s) +/PE and -/PE
Protection mode(s) Common mode
Protection level Up 390 V
Protection level L/N Up L/N 390 V
Protection level L/PE Up L/PE 390 V
Technology MOV
SPD configuration 2 poles
Connection to Network by screw terminals: 4-25 mm²
Format Plug-in modular box
Mounting Symmetrical rail 35 mm (DIN 60715)
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) DSM40-75DC
Remote signaling of disconnection Output on changeover contact
Dimensions See diagram
Standards compliance IEC 61643-11 / EN 61643-11 / UL1449 4ed.
Thermal disconnector Internal
Fuses Fuses type gG - 50 A