BREAKER (P/N MS22073 1-2) - As Removed, New Surplus

The MS22073 1-2 is a 1/2-amp thermal circuit breaker meeting Military Specification MS22073 (superseded by SAE AS22073). This push-pull, trip-free breaker protects low-current aircraft electrical circuits on 28 VDC and 120 VAC 400 Hz systems. Installed directly into aircraft distribution panels, it automatically interrupts power when current exceeds its 1/2-amp rating, then resets manually after the fault clears.

Verify amperage rating, wire gauge, and reset operation per the aircraft maintenance manual before installation.

What is the BREAKER (P/N MS22073 1-2)?

The MS22073 1-2 is a 1/2-amp thermal circuit breaker meeting Military Specification MS22073 (superseded by SAE AS22073). This push-pull, trip-free breaker protects low-current aircraft electrical circuits on 28 VDC and 120 VAC 400 Hz systems.

Is the MS22073 1-2 compatible with my aircraft's avionics suite?

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

Does the MS22073 1-2 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 MS22073 1-2?

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.