Sandia AIS 24 Pole Relay Switching Unit | AIS 240B-35



Sandia's AIS240B-35 is a multi-purpose switching unit, consisting of six, four-pole relays for a total of 24 poles of switching capabilities.

The relays are arranged in a group of four (16 poles) and two single relays (4 poles each). The relays can be activated by either ground or 28 VDC, maximizing installation flexibility. The AIS240B-35 uses gold-plated dry contacts that are sealed in nitrogen-filled cases. The rugged construction makes them ideal switching units for both fixed-wing and helicopter operations.

The SANDIA Aerospace MARC Series of remote accessory cards provide the installer with a wide variety of interface circuits needed to integrate today's avionics systems. Each MARC35 comes housed in a single card enclosure.

Estimated delivery: May 27th - May 30th
Part Number: 306434-00 Category:
  • 24 total poles of switching capabilities
  • Six four-pole relays
  • Activated by ground or 28VDC
  • Gold plated dry contacts
  • Nitrogen filled sealed case

Additional information

Weight0.5 lbs
Dimensions5.13 × 3.46 × 1.2 in

FAA-PMA NSN 5999-01-544-0513

Operation Voltage



160 mA, will all relays engaged

Operation Temperature

-20°C to 55°C, maximum

Contact Rating:

1.0A @ 30 VDC



AIS 240B-35 Switching Module

Sandia AIS 24 Pole Relay Switching Unit | AIS 240B-35