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RELAY UNIT/28V, 24 Pole Remote Relay, includes Install Kit. MD41-248

RELAY UNIT/28V, 24 Pole Remote Relay, includes Install Kit.  MD41-248
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RELAY UNIT/28V, 24 Pole Remote Relay, includes Install Kit. MD41-248
RELAY UNIT/28V, 24 Pole Remote Relay, includes Install Kit. MD41-248
MD41 Remote Transfer Relay | 28V, 24 Pole

The MD41-244/248 is a bulkhead mounted remote transfer relay unit specifically designed for switching a CDI or HSI Indicator between two aircraft radio navigation systems. The remote switching unit is designed to be used with the companion MD41-1XXX series Annunciation Control Unit (ACU). This pertains to GPS systems where the user desires to share a common CDI or HSI between an existing NAV system and a GPS system.

Version (EMDO# MD41-248) is a 28V remote mounted transfer relay.


  • 24 pole
  • 8 relay pairs with 3 poles per pair
  • Relay pairs activated individually by voltage, ground keying, or as a group by ground keying
  • Interlocking of transfer relays
  • ILS override automatically switches to Nav mode when tuned to ILS frequency
  • Adjustable dimming regulator
  • Gold plated contacts
  • Nitrogen filled

Product Codes

Mfr Part No:MD41-248
ECCN:9A991
PMA:PQ3738CE
PROAPP:PT3738CE, PQ3738CE, OL2R061L
SCHEDULE B CODE:8536.41.0020
TSO:C129


Weight: 0.75 lbDimensions: 2.86 x 2.60 x 1.52 in.Temperature: -55ºC to +70ºC Humidity: 95% non-condensingAltitude: 55,000 ft

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  • Manufacturer Part #: MD41-248
$1,465.00