Marathon X509 2 HP 1140 RPM 208-230/460V 3PH Condenser Motor

Marathon X509 (Model 56T11O5304) Three Phase Open Air Over Condenser Fan Motor, 2 HP, 1200/1000 RPM, 208-230/460V, 56Z Frame

The Marathon X509 (Model 56T11O5304 / 056T11O5304) is a commercial-grade three-phase Open Air Over (OPAO) condenser fan and heat pump motor engineered for rooftop units, commercial chillers, and large outdoor condensing systems. Operating on multi-voltage 208-230/460V 3-phase power at 1200/1000 RPM (60 Hz), this 2 HP (2/1.5 HP dual-rated) squirrel cage induction run motor features a NEMA 56Z/56Y frame, round belly band mounting, durable ball bearings, Class B insulation, and continuous duty rating in elevated 60°C ambient temperatures.

Key Specifications

• Catalog Number: X509 (MX509)
• Model Number: 56T11O5304 
• Brand / Manufacturer: Marathon Motors 
• Motor Type: Squirrel Cage Induction Run 
• Horsepower: 2 HP 
• Speed: 1200 / 1000 RPM 
• Voltage: 208-230 / 460 Volts AC 
• Phase / Frequency: Three Phase / 60 Hz
• Full Load Amps: 7.2 - 6.8 / 3.4 Amps 
• Frame Size: NEMA 56Z / 56Y Frame
• Multiplier Symbol: F1
• Shaft Specifications: 5/8" Shaft Diameter x 5.06" Length
• Enclosure Type: OPAO 
• Mounting Type: Round Belly Band Mount
• Insulation Class: Class B Insulation
• Service Factor: 1.00 S.F. Continuous Duty
• Max Ambient Temperature: 60°C (140°F) Ambient
• Bearings: Heavy-Duty Ball Bearings (DE & OPE)
• Rotation: Reversible 
• Motor Weight: 46 lbs
• Cross Reference Numbers: Nidec / US Motors 8987V, Leeson 056T11O5304

Product Features & Fitment

Designed specifically for high-volume commercial heat pump and condensing unit applications, the Marathon X509 features a rolled steel shell with open air-over end-frames for efficient thermal dissipation under continuous airflow. Its round belly band mounting profile allows flexible positioning inside fan shrouds, while its three-phase winding design eliminates starting switches for reduced maintenance and enhanced long-term system reliability.