Phasor K4-12.5kW Marine Diesel Generator – 1800 RPM, Standard Series
Gain smooth four-cylinder diesel electrical generation with the Phasor K4-12.5kW Marine Generator, generating 12.5kW of continuous 120/240V power via a 4-cylinder Kubota diesel engine for large-scale shipboard hotel loads.
- 12.5kW output runs large boat chillers
- 4-cylinder Kubota engine delivers balanced rotation
- 1800 RPM low-speed operation reduces vibration
- Marine heat exchanger resists seawater corrosion
Description
Deliver twelve thousand continuous electrical watts through the Phasor K4-12.5kW Marine Diesel Generator, built for severe maritime environments and large yacht hotel loads. Operating at a quiet 1800 RPM, this generator produces 12.5 kW continuous power and 15.0 kVA surge output at 120V and 240V 60Hz, running multi-stage air conditioning chillers, full galley lines, and hydraulic dive compressors.
A heavy-duty four-cylinder 1498cc Kubota V1505 diesel engine anchors this platform on a coated steel base pan fitted with heavy rubber isolation mounts. The synchronous brushless alternator utilizes 100 percent copper windings with Class H epoxy insulation to resist salty marine environments. Weighing 585 lbs dry, the generator housing measures 38.0 inches long by 21.0 inches wide by 25.5 inches high.
Key Features of Phasor K4-12.5kW
Naval architects who buy Phasor K4-12.5kW marine diesel generator systems obtain prime electrical generation engineered for substantial maritime hotel loads. Four-cylinder mechanical balance minimizes vibration transmission through vessel hulls, preserving passenger comfort during overnight voyages and long offshore passages.
- 12.5 kW continuous single-phase power sustains large luxury yacht galleys and laundry equipment simultaneously.
- 15.0 kVA peak surge capacity absorbs heavy locked-rotor amperage from large chiller compressor motors.
- Low-speed 1800 RPM operation extends engine overhaul intervals while dampening structural hull vibrations.
- Kubota four-cylinder diesel block provides exceptional rotational balance and low mechanical sound.
- K4-12.5kW marine power unit features a freshwater-cooled exhaust manifold that isolates engine heat from bilges.
- Brushless four-pole alternator design eliminates maintenance associated with slip rings and carbon brushes.
- Internal elastomeric isolation mounts decouple low-frequency diesel vibration from vessel hull structures.
- Safety shutdown sensors trigger automatic stops upon high coolant heat, low oil pressure, or exhaust flow loss.
Voltage Drop Limits Acoustic Decibels
Producing 57 dB(A) at 23 feet inside an acoustic sound enclosure, this generator maintains quiet conditions aboard recreational vessels. The solid-state automatic voltage regulator holds output voltage within 2 percent of 120V and 240V standards at 60 Hz during sudden 8 kW electrical step loads. Diesel fuel consumption measures 0.82 GPH at 50 percent load, providing high operational efficiency.
Machinery Room Placement Exhaust Configuration
Position the unit on reinforced engine beds, maintaining 14 inches of perimeter space around capsule service panels for maintenance access. Exhaust routing requires a marine water-lift silencer and gas-water separator to prevent sea water ingestion during rough ocean passages. The electrical system incorporates an isolated ground return to prevent stray currents from dissolving exterior zinc anodes.
Service Accessibility Maintenance Protocol Steps
Single-side maintenance engineering places all primary checkpoints on one accessible face for rapid routine inspections. This marine generator is not engineered for dry land operation without water cooling, nor for unventilated gasoline engine compartments lacking spark-ignition certification.
- Inspect raw-water intake strainers and monitor engine oil levels before each shift.
- Drain engine crankcase oil and replace spin-on filter cartridges every 100 runtime hours.
- Check raw-water pump impellers and inspect heat exchanger zincs every 250 runtime hours.
Commercial Warranty Factory Shipping Manifest
Phasor provides a 2-Year commercial marine warranty protecting engine mechanical components, heat exchanger cores, and power electronics. The freight crate includes the Phasor K4-12.5kW generator core, remote digital control panel, connecting cables, oil drain kit, and factory documentation.
Phasor K4-12.5kW Marine Diesel Generator (Standard Series, 1800 RPM) Specs
| Brand / Manufacturer | Phasor Marine Power Systems |
| Full Model Code | K4-12.5 kW Standard Series 4-Cylinder |
| Generator Type | Stationary High-Capacity Marine Diesel Generator Set |
| Prime Power Output | 12.5 kW (12,500 Continuous Watts) |
| AC Voltage & Frequency | 120V / 240V AC Single Phase @ 60 Hz |
| Amperage Output | 104.1A @ 120V / 52.0A @ 240V |
| Engine Architecture | Kubota V1505 Series Naturally Aspirated 4-Cylinder Marine Diesel Engine |
| Engine Operational Speed | Static 1,800 RPM (Low Speed, High Harmonic Balancing Profile) |
| Cooling System Type | Cupro-Nickel Heat Exchanger Cooled with Multi-Port Wet Exhaust Mixing Elbow Assembly |
| Alternator Spec Core | Single-Bearing Brushless Generator Unit featuring Microprocessor Automatic Voltage Regulation |
| Fuel System Layout | Bosch-Type Injection Pump, Mechanical Governor, and Secondary Spin-On Fuel Filtration Core |
| Safety Management Systems | Low Oil Level Interrupt Protection and High-Temperature Coolant Automated Ignition Kill Interlocks |
| Net Weight | Approx. 265.3 kg (585.0 lbs) Dry Base Weight Range |
| Dimensions L x W x H | 889 mm x 483 mm x 584 mm (35.0" x 19.0" x 23.0") |
| Ideal Application | The perfect heavy-duty core for extensive liveaboard configurations, commercial workboats, or catamaran platforms operating concurrent high-amperage lines. |














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