Brick Model 56RS3

NAI’s 56RS3 is a 300 Watt AC/DC Power Supply that accepts a three-phase, AC input plus a +270 VDC input. This COTS unit provides a single full-power output (300 Watts) at a baseplate temperature of +85° C or a single 350 Watt output at a baseplate temperature of +70° C.

Standard features include remote error sensing; remote digital (TTL) turn on/off; and protection against transients, overvoltage, overcurrent, and short-circuits. Options such as ESS vibration testing and choice of output voltages are available, and additional options and special units can be ordered.

This conduction-cooled power supply is specifically designed with NAVMAT component derating for rugged defense and industrial applications. It is also designed to meet the many harsh environmental requirements of military applications.


  • Ideal for rugged, conduction-cooled, military applications
  • Standard output voltages: +24 V, +28 V
  • Integrated EMI filtering per MIL-STD-461D
  • Input transient protection per MIL-STD-704D
  • High power density
  • Low profile packaging
  • Low noise
  • Operates at full load through the entire -55° C to +85° C temperature range