Custom mounting

We can supply both styles of filter – powerline filters and signal filters – with NPT pipe nipples and flange nuts for mounting directly on our shielded chambers and QuietShield Boxes. Alternately, both styles of filter can be remotely mounted with shielded conduit running between the clean end of the filter and the QuietShield Box or anechoic chamber.

Powerline filters

Our powerline filters meet ITSG-02 requirements and include two separate filtering circuits. They are available with additional amperage ratings if required.

Additional features

  • Penetration style for independent mounting
  • Cabinet style mounting available
  • Power factor correction coil


Current rating

5 amp to 600 amp


0–60 Hz, 400 Hz option available

Voltage rating

120/208/277/480 VAC, 600/1000 VDC

Insertion loss

100 dB minimum from 14K Hz to 10 Ghz under full load per MIL-STD-220C


Cold-rolled steel


Input and output terminals shall be completely enclosures in RF shielded compartments. Cover on the input compartments shall be screw-down type


Corrosion-resistant suitable plating


High temperature ceramic

Standard sizes

  • Dual 30 amp 120/208/277/480/600 VAC, 60 Hz
  • Dual 60 amp 120/208/277, 60 Hz
  • Single 100 amp 120/208/277, 60 Hz
  • Single 225 amp 120/208/277, 60 Hz

Compliance with industry standards

UL 1283

Standard for electromagnetic interference filters


Military standard: Method of insertion loss measurement (2009)


Performance specification: Filters and capacitors, radio frequency interference, general specification (2010)

Signal filters

Raymond EMC offers four types of signal filter.

High current telephone filter for analogue systems

  • Not compatible with digital systems
  • 300 Ohms L/G, 600 Ohms L/L balanced
  • Passband 0-3 kHz
  • Dual 0.5 amp
  • 6.81” L x 3.5” W x 2.5”H

Fire alarm filter for “dry contact” systems

  • Not compatible with addressable systems
  • Inductive input and output
  • Dual 1 amp and Dual 5 amp available
  • 9” long x 3.5” wide x 2.5” high

2 x 1 amp signal filter

  • Inductive input and output
  • 9” long x 3.5” wide x 2.5” high

2 x 5 amp signal filter

  • Inductive input and output
  • 9” long x 3.5” wide x 2.5” high

Additional features

  • Penetration style for independent mounting
  • Two separate filtering circuits
  • Meets ITSG-02 requirements
  • Additional amperage ratings available
  • Cabinet style mounting available


Standard amperage rating

0.5 amp, 1 amp, 5 amp


120 VAC


0-60 Hz

Voltage drop

2% maximum at full rated unity power factor load

Current overload

140% maximum current rating for 15 minutes maximum

Dielectric withstand voltage

2 X rated voltage

Insulation resistance

As per MIL-F-15733

Insertion loss

100 dB minimum from 14 KHz to 10 Ghz when measured to MIL-STD-220-A

Two-year warranty

All Raymond EMC filters come with a two-year limited warranty against defective materials and craftsmanship and to retain the specified RF shielding effectiveness.