Control, Data, and Telephone Line
Low Voltage HEMP Filters

TSS USA Manufacturing’s LV line of low voltage HEMP filters are tested and certified to meet the production requirements of MIL-STD-188-125-1A.

For facility engineers overseeing data and telecom applications, ultra-reliable precautions are essential. An electromagnetic pulse (EMP)/high-altitude EMP (HEMP) event which causes a disruption to unprotected communication lines and internet connections could prove disastrous.

TSS USA Manufacturing’s low voltage HEMP filters provide a safe EMP mitigation solution that creates less heat and a smaller footprint than “stacked” low-voltage filter configurations for a much lower cost. They are suitable for control, data, and telephone line applications and meet or exceed all relevant performance criteria.


This range of multi-line filters is suitable for a range of control and telecom applications including:

  • Filtering control and low current power lines on shielded rooms and general installations
  • Carrying digital data circuits and analogue telephone circuits into shielded rooms and communications cabins
  • Acting as in-line filters for information security applications

Compliance Standards

All control, data, and telephone line filters are rigorously tested and meet or exceed the relevant performance and/or safety criteria defined within these standards:

  • MIL-STD-188-125-1A
  • UL1283 (in process)
  • MIL-STD-188-125-2
  • MIL-F-15733
  • MIL-STD-220C
  • CISPR17:2011/BS EN 55017:2011
  • EN60950/IEC60950/UL60950


  • Filters rated for AC and DC voltage
  • Temperature rise meets MIL-STD-188-125-1A
  • Space-saving and cost-efficient
  • Predominately U.S.-sourced materials and components meet the FAR 52.225-1 Made in America

Our team of experts can guide you through your filter section—not to mention our engineering services available to you at no extra charge.