Phasor JD4-80.0 – 80kW Diesel Marine Generator 60Hz 1800 RPM

The Phasor JD4-80.0 is a heavy-duty low-speed marine diesel generator for large commercial and recreational vessels requiring 80 kW of 60Hz AC power. It uses a John Deere 4045H turbocharged aftercooled four-cylinder diesel engine operating at 1,800 RPM and a direct-coupled brushless generator with solid-state voltage regulation. The base configuration is open frame, while a sound-attenuation enclosure may be available as an optional configuration.

The generator uses freshwater heat-exchanger cooling with a bronze raw-water impeller pump. It includes a remote gauge panel with oil-pressure, coolant-temperature, voltage, and hour-meter monitoring, plus automatic shutdown for low oil pressure, high coolant temperature, and overspeed. A high-capacity installation requires professional engineering for structural support, cooling, fuel, exhaust, ventilation, AC distribution, grounding, and transfer switching.

Key Specifications

- Heavy-duty low-speed marine diesel generator for 60Hz AC electrical systems.
- Provides 80 kW continuous output at 1,800 RPM.
- Uses a John Deere 4045H turbocharged aftercooled four-cylinder diesel engine with approximately 4,500 cc displacement.
- Available in 120/240V single-phase configuration; verify the exact alternator option for any three-phase requirement.
- Uses a direct-coupled brushless generator with solid-state voltage regulation.
- Uses freshwater heat-exchanger cooling with a raw-water circuit and bronze impeller pump.
- Fuel consumption is listed at approximately 5.9 US gallons per hour, or 22.3 L per hour, at full load.
- Open-frame dimensions are approximately 1,702 mm by 762 mm by 914 mm, with a listed dry weight of approximately 975 kg.

Electrical Compatibility

Confirm whether the vessel requires 120V, 240V, split-phase, or an approved three-phase alternator configuration before ordering. Generator selection should account for continuous demand, simultaneous load, power factor, largest motor-starting surge, distribution architecture, and future expansion—not generator kW alone.

For high-demand vessels, complete a formal load study covering HVAC, watermakers, battery chargers, refrigeration, pumps, galley equipment, workshop loads, and all other onboard AC consumers. If a three-phase configuration is selected, the installation must also manage phase balancing and correct phase sequence.

Installation Considerations

Install the generator on a rigid vibration-isolated foundation rated for approximately 975 kg, with safe access for oil, filters, coolant, raw-water pump, turbocharger, exhaust, electrical terminals, and optional enclosure components. Provide correctly sized diesel feed and return plumbing, seawater intake and strainer, wet exhaust, ventilation, starting battery, AC breakers, grounding and bonding, and a shore-power transfer switch or interlock that prevents simultaneous shore and generator power connection. Installation and commissioning should be completed by a qualified marine generator technician.

Before Ordering

Confirm required continuous and surge load within 80 kW, exact 60Hz voltage and phase requirement, available 1,702 mm by 762 mm by 914 mm installation space, structural support for approximately 975 kg, sound-enclosure requirement, diesel fuel layout, raw-water intake, exhaust route, ventilation capacity, starting-battery circuit, AC distribution and transfer-switch design, grounding plan, service access, and qualified installation requirements before purchase.