Furuno, PR-300 Power Supply

The Furuno PR-300 Power Supply is a robust, multi-voltage AC-to-DC power converter designed specifically for marine and industrial applications. It ensures stable 24V DC power (typically 20A output) for various electronic systems, often featuring automatic AC-to-battery changeover for GMDSS compliance, making it critical for continuous operation of vital equipment on vessels.

Technical Specification

Input (AC):

Voltage Range: Adjustable via transformer taps for wide compatibility:
- 100 VAC
- 110 VAC
- 120 VAC
- 200 VAC
- 220 VAC (Factory default setting)
- 240 VAC
Frequency: 50/60 Hz
Input Current:
- Less than 4.1 A at 100 VAC input
- Approx. 5 A at 220 VAC input
Fuse Requirements:
- 10A fuse for 100V/110V AC inputs
- 5A fuse for 200V/220V AC inputs

Output (DC):

Voltage: 24 VDC
Current Capacity: Typically 20 Amps (continuous)
- Some sources mention variants with different outputs like 100V DC at 10A, or 220V DC at 5A, or 125V DC at 20A, but the most common for marine power applications is 24VDC at 20A.

General:

Manufacturer: Tamura Corporation (for Furuno)
Weight: Approximately 14.5 kg (32 lbs)
Dimensions (Approximate, based on typical outline drawings):
- Width: 270 mm
- Height: 290 mm
- Depth: 350 mm
Features:
- Designed for GMDSS compliance with automatic changeover to battery backup (when connected to a battery system).
- Rugged construction suitable for marine environments.
- Mounting considerations: Requires a vibration-free, well-ventilated area with sufficient space for maintenance.