Phasor KK4-12.5 – 12.5kW Keel Cooled Diesel Generator 60Hz

The Phasor KK4-12.5 is a 12.5 kW, 60Hz marine diesel generator designed for vessels using 120V or 240V single-phase AC power. It uses a Kubota V1505-E four-cylinder diesel engine operating at 1,800 RPM and is configured for keel cooling, grid cooling, or compatible skin-cooling systems. The open-frame design is intended for installations where cooling is handled through the vessel hull circuit rather than by a seawater heat-exchanger arrangement.

The generator is supplied as an open-frame unit, with an optional sound enclosure available. It includes a remote safety-shutdown panel with oil-pressure, water-temperature, voltmeter, and hour-meter gauges. Correct installation requires a properly sized keel-cooling circuit, fuel system, exhaust, ventilation, starting battery, AC distribution, transfer switch, grounding, and circuit protection.

System Integration

This generator requires a keel-cooling or compatible hull-cooling circuit sized for the engine and generator heat load. It does not use a conventional raw-water heat exchanger as its primary cooling method. Confirm the vessel has an existing compatible keel cooler, grid cooler, or engineered skin-cooling solution before selecting this model.

The AC system requires a start battery, diesel fuel feed and return, exhaust system, ventilation, single-phase breaker panel, shore-power transfer switch or interlock, grounding and bonding, and correctly rated cables. Confirm the vessel’s 120V or 240V 60Hz requirement and include simultaneous loads, power factor, and motor-starting surge in capacity planning.

Before Ordering

Confirm required continuous and surge load within 12.5 kW, 120V or 240V single-phase 60Hz compatibility, an engineered keel-, grid-, or skin-cooling circuit, available 965 mm by 533 mm by 610 mm installation space, structural support for approximately 265 kg, diesel fuel layout, exhaust route, ventilation capacity, starting-battery circuit, AC distribution and transfer-switch design, grounding plan, optional sound-enclosure requirement, service access, and qualified marine-generator installation requirements before purchase.