The WINCO 55PTOC4-21 55kW 3-Phase 346/600V PTO Generator is engineered for serious power demands — ideal for farms, factories, and remote sites requiring stable, high-voltage electricity. Designed and assembled in the USA, this heavy-duty model transforms tractor horsepower into dependable, utility-grade power that keeps critical systems running when and where it’s needed most.

Operating at 540 RPM PTO input, the 55PTOC4-21 delivers 55,000 surge watts and 46,400 continuous watts at 346/600V three-phase, requiring a 110 HP tractor to achieve full-rated output. Its brushless industrial alternator features a high-precision AS440 automatic voltage regulator (±1%), producing smooth, consistent power with less than 5% total harmonic distortion (THD) — safe for sensitive electronics, industrial controls, and large equipment.

Winco’s cast-iron gearcase, refined for more than 60 years, ensures exceptional mechanical strength and long service life. Inside, the double-layer concentric stator winding, 2/3-pitch rotor, and Class H insulation deliver superior thermal performance and electrical stability, even under continuous-duty operation. A 3.5-inch frequency meter provides easy PTO speed monitoring for accurate 60 Hz output, while the IP23 protection rating safeguards the generator from moisture and debris in rugged environments.

Connectivity is built for industrial-grade applications, featuring a 350A full-power Anderson receptacle (plug included). The generator includes a bonded neutral, ground lug, and standard frequency meter for safe, code-compliant operation. Compatible with Category 2 three-point hitches or PTO trailer kits, the 55PTOC4-21 offers flexibility and reliability in the field or at fixed installations. Fully load-tested and inspected in Minnesota, this generator carries a 3-year commercial warranty, delivering dependable, American-built performance you can trust.