Technically Superior HEMP & TEMPEST/SCIF Protection for Mission Critical Military & Defense Applications
Mission-critical applications require the highest level of protection, as anything less could result in loss of life or mission failure. A high-altitude electromagnetic pulse (HEMP) event could impact aircraft control systems, automotive control systems, nuclear power stations, control rooms, fleet operations centers, medical equipment, emergency communications, war rooms, or the grid causing dire consequences.
Protect your mission-critical systems (and the lives of your personnel) from an unexpected HEMP event with one of our filter solutions.

The Industry’s Only Medium Voltage HEMP Protection Solution
TSS USA Manufacturing will protect your mission-critical operations as we debut our medium voltage high altitude EMP (HEMP) filter. Our filters have the ultimate advantage, with 40 years of EMI and EMP filter design experience poured into these trailblazing medium voltage filters.
These filters exceed the performance requirements for high altitude electromagnetic pulse, so you know your defense and power operations will be the most protected.
Filters from TSS USA Manufacturing are compliant per DEF STAN 59-411. This is for electromagnetic interference requirements and electromagnetic compatibility. The medium voltage filters are the first filter rated at up to 5,000 volts with amperage ratings from 250 to 800. The MV5K series is also compliant per:
- MIL-STD-188-125
- UL1283 (in process)
- ISO 9001
- RoHS Compliance
- MIL-STD-461
- MIL-STD-220
- MIL-F-15733
As you may know, transformers have long lead times; these filters will protect a transformer if there is an EMP event—saving you up to two years of downtime.
You can support other electric equipment such as alternators, blower motors, wiper motors, turret motors, washer motors, oil cooler fans, engine management systems, actuators, ancillary equipment, communications equipment, and medical equipment.
Low Voltage HEMP Filters for Mobile Military Applications
Military vehicles operate in extreme environments, but declining performance is not an option. In addition to external dangers and challenging conditions, military vehicles can become victims to a lack of electromagnetic compatibility, or EMC.
The variety of equipment in a vehicle—radar, infrared, weapons, targeting systems, telecommunications, and environmental controls—can give rise to electromagnetic interference (EMI) on a continuous, sporadic, or transient basis as signals in different frequently-used ranges. In other words, the range of equipment can also be seen as sets of both noise generators and victims of noise.
There are different ways that EMI can propagate through a military vehicle. One where filters can help is through controlling signals on cables and wires that can carry the EMI or act as antennas, broadcasting or receiving the interference. However, no matter what the specific mechanism, the EMI still enters another piece of equipment through a cable or wire. A filter prevents this transmission of unwanted frequencies.
Cost-effective military off-the-shelf grade filters can suppress the EMI signals from even commercial off-the-shelf (COTS) equipment by preventing specified frequency ranges that would be harmful from entering another piece of equipment.
Some solutions are intended to manage EMI from such standard vehicle equipment alternators, wiper motors, blower motors, washer motors, oil cooler fans, air conditioning equipment, engine management systems, and censors to comply with FFR (fitted for radio) requirements.
Other types of filters are intended more for specialized items such as beacons, smoke dischargers, door actuators, turret motors, and ancillary devices like shielded containers, communications devices, and medical equipment.
The low-voltage versions of filters, which run at voltages of up to several hundred volts and typically within ambient temperature ranges of -40°C to 50°C.
TSS USA Manufacturing’s line of low voltage HEMP filters meet the following standards for unyielding protection of a mobile unit:
- MIL-STD-188-125-1A
- UL1283 (in process)
- MIL-STD-188-125-2
- Low Voltage Directive
- MIL-STD-220
- MIL-F-15733

