The WINCO W120PTOS-18 120kW 3-Phase 277/480V PTO Generator is a high-capacity, professional-grade power solution engineered for agricultural, commercial, and industrial use. Proudly built and tested in the USA, this rugged generator converts your tractor’s PTO horsepower into 120,000 continuous watts of clean, utility-grade power — perfect for large-scale facilities, heavy machinery, or backup power for critical operations.

Operating at 1000 RPM PTO input, the W120PTOS-18 produces 180 amps at 277/480V three-phase, requiring a 240 HP tractor for full-rated output. The brushless 4-pole rotating field alternator uses an SX460 automatic voltage regulator (AVR) to maintain ±1.5% voltage regulation and less than 5% total harmonic distortion (THD) — ensuring stable, consistent performance suitable for sensitive electronics and large electrical loads. Built for endurance, the unit features Class H insulation, premium Square D circuit breakers, and a cast-iron gearcase with helical gears for smooth, reliable power delivery under heavy use.

A large 3.5-inch frequency meter allows precise PTO speed monitoring for accurate 60 Hz operation, while safety features include a protective PTO shield, bonded neutral, and ground lug. Each Winco generator undergoes 100% full-load factory testing before shipping, ensuring dependable performance right out of the box. The IP23-rated housing and lifting eye make the unit easy to transport and install, while its SAE 85W 90-140 oil lubrication system ensures long gearcase life even in demanding conditions.

Connectivity is made simple with a 350A full-power 5-wire Anderson plug (included), giving users flexible and safe connection options for heavy-duty applications. With its robust build, precision voltage control, and Winco’s trusted reliability, the W120PTOS-18 stands ready to deliver continuous, utility-grade power — backed by a 3-year farm-use warranty and decades of American engineering excellence.