2-pole Type 1 and Type 2 SPD for 48 Vdc
Part Number: 492101
  • 2-poles surge protector 48 Vdc
  • Type 1 et Type 2
  • In 30 kA / Imax 70 kA
  • Remote signaling
  • Iimp 7 kA
  • Pluggable Module
  • IEC 61643-11 and EN61643-11 compliance
  • UL1449 ed.4

DS72RS-48 DC surge protectors are designed to protect equipment connected to DC (and AC) power supplies from lightning surges.

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SPD type
following IEC test
1 ou 2
48 Vdc
Nominal line voltage
48 Vdc
Nominal DC voltage
48 Vdc
Max. DC operating voltage
65 Vdc
Operating current
Continious current at Uc
< 0.1 mA
Follow current
Nominal discharge current
15 x 8/20 µs impulses
30 kA
Max. discharge current
max. withstand @ 8/20 µs by pole
70 kA
Total Maximal discharge current
max. total withstand @ 8/20 µs
140 kA
Impulse current by pole
max. withstand 10/350µs by pole
7 kA
Total lightning current
max. total withstand @ 10/350µs
14 kA
Connection mode(s)
+/PE and -/PE
Protection mode(s)
Common mode
Protection level
@ In (8/20µs)
300 V
Protection level L/PE
@ In (8/20µs)
300 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
Failsafe behavior Disconnection
Disconnection indicator 2 mechanical indicators
Spare module(s)
Remote signaling of disconnection
DS72RS-48DC option : output on changeover contact
See diagram
UL1449 ed.4
Standards compliance
IEC 61643-11 / EN 61643-11 / UL1449 4ed.
Thermal disconnector Internal
Fuses Type gG - 100 A