COMSEC Ancillaries

Driven by industry demand for more reliable components, less expensive solutions, and niche requirements, Sigma Defense COMSEC Ancillaries ensure your security devices have reliable power and can mount into standard IT racks.


COMSEC Replacement Power Supplies (CS PS)

We have developed replacement Power Supply Units (PSU) for the General Dynamics’ (GD) KG-175 product family of Type 1 HAIPE encryptors. PSUs are designed to ensure reliable power in tactical environments. We have fielded thousands of units


  • Universal AC input/Full range
  • 3 pole AC inlet IEC320-C14
  • Energy Star compliant
  • Protections: Short Circuit, Overload, Over Voltage, Over Temperature
  • Two Year Warranty

DC to DC Power Supplies

We have developed DC to DC power supplies for use with General Dynamics’ KG-175D, and KG-175A/ B/G Type 1 HAIPE devices. These power supplies may also be used to provide clean, regulated power for other electronic devices.

The following list outlines what is presently available, but please contact us for other potential variants.

DC to DC PSU Features for use with GD KG-175D

  • 9-36 volts dirty DC input. regulated 12 VDC 30 watts
  • 48 VDC input, regulated 12 VDC 30 watts

DC to DC PSU Features for use with GD KG-175A/B/G

  • 9-36 volts dirty DC input regulated 12 VDC 90 watts
  • 48 VDC input, regulated 12 VDC 90 watts

Other COMSEC Ancillaries Products:


The AJ Power Source HRW PSU/UPS PG400 (CS HRW-P) is designed and produced by AJ Power Source, a leader in military/industrial rugged power supplies and UPS products, for customers seeking a HRW power supply for use within the Expeditionary Networking Kit or as a stand-alone device.

Learn More

CS Uni1

Our unique COMSEC device shelving solutions enable you to rigidly mount various Type 1 COMSEC devices within a standard 1U or 2U IT rack space.

Learn More

CS Uni2

The 2U tall variant of the COMSEC Uni-Shelf works the same as the 1U version and it is available for applications requiring additional clearance and rigidity.

Learn More
CS Uni2

The COMSEC Uni-Shelf (CS Uni2) iGov Variant is a unique shelving solution that rigidly mounts various Type 1 COMSEC devices and IAS IP networking appliances within a standard 2U IT rack space.

The CS Uni2 is easy to use and affordable, allowing complete flexibility when configuring rack space. Its flexible design supports the retention of several different vendors’ COMSEC products, IP networking appliances and the mixing and matching of various vendors’ products. This allows organizations to simply inventory a single shelf and use it for several products/applications.

All necessary hardware (bolts & washers) required to retain the list of supported devices is included.

A CS Uni2 Strapping Kit is also available (sold separately). It is used to retain first generation KG- 250s, KIV-7Ms, or KIV-19Ms (which all lack hard mounting points).