Surge-Trap® Signal (STS)

Low-profile surge protective devices for signal lines, PoE and RS-485 in onboard PLC controllers, HMI panels and TCMS networks.

Low parasitic capacitance and a reduced protection voltage protect against transients coupled from traction circuits without introducing delays or distortion into digital signals. DIN-rail mounting enables integration with existing control boxes without modifying the wiring.

Key features:

  • Protection of signal lines, PoE and RS-485
  • Low parasitic capacitance - no delay or distortion of digital signals
  • Reduced protection voltage
  • Narrow profile, DIN-rail mounting without wiring modifications
  • Applications: onboard PLC controllers, HMI panels, TCMS networks

Product standards

Approvals, marks and certification standards