SWITCHING RELAY (P/N rsu-21) - Repaired, As Removed

The rsu-21 is an aircraft switching relay that controls high-current electrical loads through a low-current control signal. This electromagnetic relay routes power to landing lights, navigation systems, and other aircraft electrical circuits by opening and closing contacts based on cockpit switch commands. Built to MIL-PRF-6106 performance standards, the relay handles the voltage and current demands of aircraft power distribution systems.

Installation follows the aircraft wiring diagram with verification of coil voltage and contact ratings per FAA AC 43.13-1B guidelines. Commonly installed in general aviation and business aircraft electrical panels.

What is the SWITCHING RELAY (P/N rsu-21)?

The rsu-21 is an aircraft switching relay that controls high-current electrical loads through a low-current control signal. This electromagnetic relay routes power to landing lights, navigation systems, and other aircraft electrical circuits by opening and closing contacts based on cockpit switch commands.

Is the rsu-21 compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The SWITCHING RELAY is available in: Repaired, As Removed. We recommend checking your aircraft's wiring diagrams and STC documentation, or contact our avionics team for compatibility assistance.

Does the rsu-21 come with an 8130-3 airworthiness tag?

Availability of an FAA 8130-3 tag depends on the part condition. Overhauled and repaired units typically include 8130-3 documentation. As-removed units may include a removal tag with trace history. Contact us for specific documentation on the condition you need.

Do you offer bench testing for the rsu-21?

We can arrange bench testing through our network of FAA-certified repair stations. Call (904) 998-9101 for testing availability and turnaround times, or submit an RFQ with your specific requirements.