RELAY SOCKET (P/N s400a1b3) - New Surplus

The s400a1b3 is a relay socket designed for mounting and interfacing plug-in aircraft relays with electrical harnesses. This socket provides a serviceable connection point that enables quick relay replacement during maintenance without requiring harness rewiring. Built to MIL-PRF-12883 specifications, the socket ensures reliable electrical contact and mechanical retention in aircraft relay panels.

Installation follows standard aircraft electrical practices per FAA AC 43.13-1B and the applicable aircraft maintenance manual. Commonly used in general and commercial aviation electrical systems where modular relay architecture supports efficient troubleshooting and component replacement.

What is the RELAY SOCKET (P/N s400a1b3)?

The s400a1b3 is a relay socket designed for mounting and interfacing plug-in aircraft relays with electrical harnesses. This socket provides a serviceable connection point that enables quick relay replacement during maintenance without requiring harness rewiring.

Is the s400a1b3 compatible with my aircraft's avionics suite?

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

Does the s400a1b3 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 s400a1b3?

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.