300-Watt AC/DC Power Supply - 56RS3

Model AC/DC 56RS3

300-Watt AC/DC Power Supply - 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, over voltage, over-current, 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.

Power Supply Reference Guide


  • 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
  • Contact factory for additional options and special units
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56RS3 Specification