BREAKER, CIRCUIT, 4 AMP (P/N 7277-2-4) - New Surplus

The 7277-2-4 is a 4-amp thermal circuit breaker for aircraft electrical systems operating at 28 VDC or 115 VAC. This Klixon 7277 series breaker features a trip-free, push-to-reset/pull-to-trip actuator in a compact panel-mount form factor. It protects avionics bus feeders and distribution circuits from electrical overload and short-circuit conditions.

The breaker mounts directly through the panel with screw terminal connections per aircraft maintenance manual specifications. Manual reset capability allows pilots and maintenance personnel to restore power after a trip event without replacing the component.

What is the BREAKER, CIRCUIT, 4 AMP (P/N 7277-2-4)?

The 7277-2-4 is a 4-amp thermal circuit breaker for aircraft electrical systems operating at 28 VDC or 115 VAC. This Klixon 7277 series breaker features a trip-free, push-to-reset/pull-to-trip actuator in a compact panel-mount form factor.

Is the 7277-2-4 compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The BREAKER, CIRCUIT, 4 AMP 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 7277-2-4 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 7277-2-4?

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.