Lamar A-00258-2 ALTERNATOR INOPERATIIVE SWITCH, 28V

The **Lamar A-00258-2 Alternator Inoperative Switch** (P/N **A-00258-2**) is a 28V aircraft electrical monitoring component designed to provide an alternator inoperative warning indication. The switch monitors voltage from the alternator auxiliary terminal and activates the aircraft's warning indicator when the voltage falls below the operating threshold. Featuring a sealed, potted construction, the A-00258-2 supports alternator monitoring applications in compatible Piper, Beechcraft, Maule and Twin Commander aircraft. --- ## Applications Suitable for applicable: - **Piper Aircraft** – PA-23, PA-31, PA-31P and PA-34 Series - **Beechcraft Aircraft** – Selected Baron, Travel Air and other compatible models - **Maule Aircraft** – Selected M-4, M-5, M-6, M-7, M-8, MT-7 and MX-7 Series - **Twin Commander Aircraft** – Selected 560, 680, 690, 695, 700 and 720 Series - **28V Aircraft Electrical Systems** – Alternator inoperative warning indication - **Aircraft Electrical System Maintenance** – Replacement of compatible alternator monitoring switches --- ## Why CJ Aerospace? CJ Aerospace supplies aircraft electrical components, alternator inoperative switches, voltage regulators and replacement electrical system parts for a range of aviation applications. Our team can assist with product information, availability and part-number identification. - 🇦🇺 **Australian-owned and operated** - 📦 **Aircraft electrical components and replacement parts** - 🔧 **Technical assistance with part identification and compatibility** - ✈️ **Support for aircraft owners, operators and aviation professionals** > ✉️ [Contact us at sales@cjaerospace.com.au](mailto:sales@cjaerospace.com.au) > Need help identifying the correct alternator inoperative switch or compatible aircraft electrical component? Contact our team for assistance.

- **28V Electrical System Compatibility** – Designed for applicable 28V aircraft alternator systems - **Alternator Inoperative Monitoring** – Monitors voltage from the alternator auxiliary terminal - **Warning Light Activation** – Illuminates the indicator when voltage falls below the operating point - **Low Indicator Current** – Supports indicator bulb current up to 0.1A - **Potted Construction** – Encapsulated construction for durability - **Compact Design** – Small dimensions for integration into applicable aircraft electrical systems - **Multiple Aircraft Applications** – Listed for selected Piper, Beechcraft, Maule and Twin Commander aircraft