Data signal SPDs

Surge Protection Made Simple™ - complete data signal surge protection for telecom, video and instrumentation applications

  • UL 497B Listed to protect equipment and wiring against the effects of excessive currents caused by lightning
  • BNC coax cable, RJ45 / Ethernet data cable and universal 4-pole versions available for popular data signal applications
  • DIN-Rail mount makes installation easy
  • Universal 4-wire SPD is easy to apply in most instrumentation applications up to 180 V
  • Data signal SPDs complement SurgePOD™ Type 1 and DIN-Rail UL AC/DC power and control surge product lines for comprehensive system protection

Product profile No. 10035

Surveillance video protection SPD product profile No. 10110

UL power and data signal SPD application guide No. 3193

Surge protective device master Spec No. 10204

Data sheets, installation sheets and CAD drawings - See Spec Sheets & Downloads tab below

Bussmann series SPD selector

Find the surge protective device you need based upon your overvoltage protection needs - covers power and data signal SPDs.

For measurement, control and regulation circuits, and twisted pairs

DIN-Rail Universal 4-Pole Surge Protective Device

Universal 4-wire, DIN-Rail mounted surge arresters provide effective protection with minimum space requirements and are designed for stringent requirements on the availability of measurement, control and regulation circuits, and bus systems.

  • Function-optimized design for safe use and easy installation
  • Module removal without signal interruption via “make-before-break” circuitry
  • 0-180V BSPD0180DINL automatically adjusts to system operating voltage and can protect data circuits of different voltages to a maximum 100mA load current

See data sheet No. 2161

For BNC coaxial data cables

DIN-Rail BNC Coax Cable Surge Protective Device


BNC surge protective devices for coaxial cable-connected systems. The BSPD5BNCDD features direct (VCD) shield connection while the BSPD5BNCDI features indirect shield connection (VCID) to prevent leakage pickups.

  • Plug-in surge protective devices with BNC sockets for easy retrofitting
    • BSPD5BNCDD and BSPD5BNCDI (left) mount on supplied bracket or standard 35mm DIN-Rail
    • Inline BSPD5BNCSI (right) plugs into terminal equipment to provide surge protection

Surveillance video protection SPDs product profile No. 10110

See data sheets No. 2158 (DIN-Rail mount) and No. 2159 (Inline)

For RJ45 connector Ethernet data cables

DIN-Rail RJ45/Ethernet Surge Protective Device

The DIN-Rail mount BSPD48RJ45 SPD for Ethernet cable systems is easy to install between the patch panel and the active component in new, or retrofitting into existing installations. It is well suited for Gigabit Ethernet, ATM, ISDN, Voice over IP and Power-over-Ethernet (PoE).

• CAT 6 according to ISO/IEC 11801 and in the channel (Class E)

• Power-over-Ethernet (PoE+ according to IEEE 802.3at) up to 57 volts

Surveillance video protection SPDs product profile No. 10110

See data sheet No. 2160

Catalog Number BSPD_
System protection - BNC coaxial cable
- RJ45 / Ethernet cable
- 4-wire for measuring and control circuits, and bus systems
Agency information UL 497B Listed
Specifications See individual data sheets for details


SPD type  BNC coaxial cable  RJ45 Ethernet  Universal 4-wire
Connectors  BNC  RJ45  Screws
System voltages  5V  48V  0-180V
MCOV DC  6.4-8V  48V  6-180V
Grounding  DIN-Rail/Conductor  DIN-Rail  DIN-Rail
Protection IP20 IP20 IP20
Operating temp. range  -40°C to +80°C  -40°C to +80°C  -40°C to +80°C
Housing material  Zinc Die Cast  Zinc Die Cast  Polyamide PA 6.6
Agency information  UL Listed 497B
UL Listed 497B
UL Listed 497B
RoHS compliant  Yes  Yes  Yes