Lamar B-00306-3 PARALLEL VOLTAGE REGULATOR, 28V FOR PIPER

The **Lamar B-00306-3 Parallel Voltage Regulator** (P/N **B-00306-3**) is a 28 V aircraft electrical component designed for parallel alternator operation in compatible Piper Aerostar aircraft. Featuring continuous linear operation, the regulator has a factory voltage setting of 28.0 V, an adjustable range of 26.0–30.0 V and a maximum load current of 3.0 A. The B-00306-3 supports coordinated alternator field regulation in twin-alternator installations. When both alternators operate at 25% or more of full load, the regulator maintains their field voltages within 0.5 V of each other. Lamar identifies the B-00306-3 with **Piper P/N 584-042** and **Hawker Beechcraft P/N 9504327**. The manufacturer's technical data sheet lists specific Piper Aerostar aircraft applications. --- ## Applications Suitable for applicable: - **Piper Aerostar 600** – PA-60-600 - **Piper Aerostar 601** – PA-60-601 - **Piper Aerostar 601P** – PA-60-601P - **Piper Aerostar 602P** – PA-60-602P - **Piper Aerostar 700P** – PA-60-700P - **28 V Aircraft Electrical Systems** – Parallel alternator voltage regulation - **Aircraft Electrical System Maintenance** – Replacement of compatible parallel voltage regulators Aircraft eligibility and installation requirements must be confirmed against the applicable aircraft technical documentation and approved data. --- ## Why CJ Aerospace? CJ Aerospace supplies aircraft electrical components, 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 aircraft parallel voltage regulator? Contact our team for assistance.

- **28 V Parallel Voltage Regulation** – Supports compatible twin-alternator aircraft electrical systems - **Factory Voltage Setting** – Set to 28.0 V, with an adjustable range of 26.0–30.0 V - **Continuous Linear Operation** – Provides alternator field regulation with a maximum load current of 3.0 A - **Parallel Regulation** – Maintains alternator field voltages within 0.5 V of each other when alternators are loaded to at least 25% of full load - **Independent Regulator Systems** – Left and right regulator systems remain independent apart from their parallel connection - **Piper Aerostar Applications** – Manufacturer-listed for selected PA-60 series aircraft - **FAA-PMA Listed** – Included in Lamar's 28 V PMA voltage regulator range