(under construction)


This surge protection device (SPD) provides 6kV/3kA surge protection for a DC power source + balanced pair telecom-like signal, for example CAN-bus or RS485. This SPD is based on TVS diodes for the DC- rail protection. This eliminates the aging aspect of metal-oxide varistors. The gas-discharge tube on the differential pair still undergoes some wear from exposures, but since the typical expected exposure are only 1.2/50µs surges (due to coupling with the DC power lines), actual energy is much less than the 10/700µs surges that the part is rated for.

Standard versions are bare PCB modules, suitable for mounting in a dedicated enclosure (approximately 8×8cm junction box) or to be fitted somewhere in an existing enclosure. There are also clamps for DIN rail mounting.

CAN-bus surge protection device


  • Versions for 12VDC and for 24VDC
  • Series resistance 0.5Ω, maximum current 3A
  • Maximum let-through voltage during 6kV/3kA surge at 85°C VNOM + 33%, so 16V and 32V respectively
  • 6-Pin 3.81mm pluggable screw terminals for CAN-bus, ground, power, shield and earth
  • Grounds and shields individually terminated to earth via 1nF Y1 capacitors
  • 6kV Surge rated; 1.2/50µs 2Ω on DC-input, 12Ω to earth, 10/700µs 25Ω on CAN-bus/balanced pair
  • Voltage to earth clamped with 1kVDC/6.5kA varistor
  • 120Ω current-limited switchable termination
  • Conformally coated circuit board 66mm × 60mm, 4mm oblong mounting holes pitch 56-60mm
  • Available with various enclosures; antistatic glass-reinforced polyester (GRP) 80×75×55mm, polycarbonate, ABS or aluminium. Enclosed models delivered without cable glands
  • ATEX increased safety 'ec' (IEC 60079-7), dust ignition protection 'tc' (IEC 60079-31)
  • Customisable with industrial (M12) connections or cable assemblies


Made in Holland


Item: Description: Status: Price: Action:Preloader
80-942-571fetching data...
80-942-572fetching data...
80-942-573fetching data...
80-942-574fetching data...
80-942-575fetching data...
80-942-576fetching data...