- Description
Circuit breakers are automatic protection devices used in aircraft electrical systems to protect wiring, power distribution lines and onboard equipment from overloads and short circuits. In helicopters and fixed-wing aircraft, they are installed in electrical panels, control circuits, avionics power lines, lighting networks and auxiliary electrical systems where quick circuit isolation is required.
In aviation maintenance, circuit breakers are normally selected by part number, current rating, voltage type, number of poles, mounting configuration, tripping characteristic and compatibility with the aircraft electrical system. A unit with the same amperage is not always interchangeable, since response curve, terminal arrangement, installation format and approved application may differ depending on aircraft type and system documentation.
This category includes aircraft circuit breakers, automatic protection switches, AC and DC circuit protection devices, single-pole and multi-pole breakers, and related electrical protection components for helicopters and aircraft of Soviet, Russian and CIS manufacture. They may be used on platforms such as Mi-8, Mi-17, Mi-171, Mi-24, Mi-26, Ka-32, An-series aircraft, IL-series aircraft and other legacy aviation equipment where stable electrical protection remains part of routine maintenance and fleet support.
Circuit breakers are commonly required during scheduled maintenance, electrical system troubleshooting, avionics repair, cockpit panel refurbishment, wiring replacement, modernization programs and restoration of airworthiness. In service, these components operate under vibration, temperature changes, repeated switching cycles and continuous electrical load, so correct selection and condition are important for reliable aircraft power distribution.
Depending on the specific position and customer requirement, aircraft circuit breakers may be supplied in factory new, serviceable, storage-preserved or overhauled condition. For selected items, technical passports, certificates of conformity, release documents, origin records or available traceability information may be provided upon request.
Aviamisto supplies aircraft circuit breakers, automatic protection switches and related aviation electrical components for MRO organizations, repair facilities, fleet operators and aviation parts suppliers. Some standard positions may be available from UAE or EU stock locations, while less common circuit protection devices are sourced upon request according to aircraft type, part number, current rating and technical documentation.