Surge Arrester

Plug-in surge protective adapter for easy retrofitting Directly plugs into terminal equipment with coaxial connections Integrated indirect shield earthing avoids leakage pickups


UGKF BNC shielded surge arresters are plugged into coaxial terminal equipment or connections. Common applications include the protection of outdoor video surveillance systems or video control centres. In order to avoid being influenced by leakage pickups, the cable shield is earthed indirectly via a gas discharge tube. The arrester inputs are used as sockets and the protected outputs as plugs.

Devices for protecting video systems with a higher supply voltage or sockets on both ends ar available on request.

We recommend to use DGA BNC VC... arresters for easy installation on a DIN rail. These space-saving surge arresters have BNC sockets and protect video and camera systems. Two versions are available: DGA BNC VCD with direct connection of the cable shield to the earth potential or DGA BNC VCID with indirect connection of the cable shield. The arresters are earthed via the DIN rail.

Detail 1

UGKF BNC can be directly plugged into the interfaces of terminal equipment.

Detail 2

Different versions of UGKF BNC.

Detail 3

DGA BNC VC ... can be easily adapted due to BNC connection.

Detail 4

DGA BNC VC... can be easily mounted on DIN rails or walls.


Part No. 929 010
SPD class T
Nominal voltage (UN) 5 V
Max. continuous operating d.c. voltage (UC) 8 V
Nominal current (IL) 0.1 A
C2 Nominal discharge current (8/20 µs) per line (In) 2.5 kA
C2 Nominal discharge current (8/20 µs) shield-PG (In) 10 kA
Voltage protection level line-shield for In C2 (UP) ≤ 25 V
Voltage protection level line-shield at 1 kV/µs C3 (UP) ≤ 15 V
Voltage protection level shield-PG at 1 kV/µs C3 (Up) ≤ 600 V
Insertion loss at 300 MHz (50 ohms) ≤ 3 dB
Return loss at 40 MHz (50 ohms) ≥ 20 dB
Insertion loss at 265 MHz (75 ohms) ≤ 3 dB
Return loss at 40 MHz (75 ohms) ≥ 20 dB
Characteristic impedance (Z) 50 ohms / 75 ohms
Series resistance per line 10 ohms
Capacitance line-shield (C) ≤ 50 pF
Operating temperature range (TU) -40 °C ... +80 °C
Connection (input / output) BNC socket / BNC plug
Earthing via outgoing earth conductor (0.75 mm2)
Shield earthing indirectly via an integrated spark gap
Test standards IEC 61643-21 / EN 61643-21
Approvals CSA, UL, GOST
Weight 68 g
GTIN 4.01E+12
PU 1 pc(s)
Product Specifications (PDF)