Compact Type 2 (or 3) DC surge protector - 30 V - Disconnection and AC line cut-off

Part Number: 70125042
  • DC Power Type 2 (or 3) SPD
  • 2-port configuration (series mounting)
  • Compact and Cost effective
  • In/Imax: 1.5 kA/ 3 kA
  • Max. load current: 16A
  • Disconnection
  • Remote signaling
  • EN 61643-11, IEC 61643-11 compliance

The devices of the DDCN series are SPDs of type 2+3 and designed for use in applications with nominal voltages of 24 or 48 Vdc, such as sensitive sensors, control systems in industry, etc.. The DDCN can be used as 1-port or 2-port SPD. The generously dimensioned connection cage with its capacity for cable cross-sections of up to 10 mm² ensures practical installation. The 2-pole DC surge arresters are designed for DIN rail mounting and occupy only 1 HP. The certification as type 2 + 3 was based on tests with similar parameters, which are also used for AC SPDs, but also according to the draft of P DIN IEC 61643-41 "Surge protective devices for use in low-voltage DC installations - Requirements and tests".

Nominal DC voltage
Un-dc 24 Vdc
Max. DC operating voltage
Uc 30 Vdc
Max. load current
IL 16 A
Residual Current
Leakage current to Ground
Ipe None
Nominal discharge current
15 x 8/20 µs impulses
In 1.5 kA
Max. discharge current
max. withstand @ 8/20 µs by pole
Imax 3 kA
Withstand on Combination waveform IEC 61643-11
Class III test: 1.2/50µs - 8/20µs
Uoc 3 kV
Connection mode(s)
Protection level +/-
@ In (8/20µs)
Up 0.2 kV
Protection level +/PE (-/PE)
@ In (8/20µs)
Up 0.8 kV
Admissible short-circuit current
Isccr 10 000 A
Network type
Connection to Network
By screw terminals: 1.5-10mm²
Symmetrical rail 35 mm (EN 60715)
Housing material
Thermoplastic UL94 V-0
Operating temperature
Tu -40/+85°C
Protection rating
Outdoor application
Failsafe mode
Disconnection and AC line cut-off
Disconnection indicator
Remote signaling of disconnection
output on NC contact
See diagram - 1TE (EN43880)
0.092 kg
Standards compliance
IEC 61643-11 / prIEC 61643-41
Thermal disconnector
Fuse type gG - 16 A