Marathon B305 Motor
The Marathon B305 is a high-performance 1/3 HP belt drive blower motor designed for continuous duty in demanding HVACR applications. Operating on 115Vac single phase power, this 48Y frame motor delivers a reliable 1725/1800 RPM (4-pole) output with a robust 1.35 service factor, allowing for occasional peak loads without compromising long-term durability. This model features a split phase design optimized for residential and commercial furnace blower replacements, roof ventilators, and exhaust fans requiring high starting torque and consistent airflow.
Built with a rolled steel frame and open drip proof (ODP) enclosure, the B305 is engineered for optimal cooling during horizontal operation. The ball bearing system ensures low friction and high reliability compared to standard sleeve bearings, while the resilient base and extended studs provide a secure, vibration-dampening mount. This unit serves as the direct replacement for 922L and F504 models, featuring a standard 1/2-inch shaft diameter with a 1-5/8 inch flat for precise blower wheel attachment. For field safety and protection, the motor includes an automatic thermal overload protector to prevent winding failure during restricted airflow conditions.
Key Benefits- Universal Compatibility: Serves as a drop-in replacement for obsolete Century 922L and F504 blower motors, simplifying field retrofits.
- Enhanced Durability: Equipped with precision ball bearings and Class B insulation for extended operational life in high-ambient environments up to 40°C.
- Low Vibration: The resilient mount and extended thru-bolt configuration effectively isolate mechanical noise, essential for indoor air handlers.
- Reliable Performance: High 1.35 service factor and 5.5 Amp rating provide the electrical headroom needed for heavy-duty starting cycles.
Is the Marathon B305 compatible with variable frequency drives?
No, the B305 is a single-speed split phase motor. Use of a VFD or speed controller not specifically designed for split-phase induction motors can cause excessive heat and winding damage.
Can this motor be mounted vertically?
The B305 is primarily designed for horizontal mounting. For vertical applications, ensure the drip loop is maintained and verify with technical specs if the thrust capacity of the ball bearings meets the specific load requirements.
What capacitor does the B305 require?
This is a split phase motor, which utilizes a centrifugal switch and start windings rather than a run capacitor, simplifying the electrical setup during installation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $204.85
-65%$204.85
$71.70Marathon B305 Motor
The Marathon B305 is a high-performance 1/3 HP belt drive blower motor designed for continuous duty in demanding HVACR applications. Operating on 115Vac single phase power, this 48Y frame motor delivers a reliable 1725/1800 RPM (4-pole) output with a robust 1.35 service factor, allowing for occasional peak loads without compromising long-term durability. This model features a split phase design optimized for residential and commercial furnace blower replacements, roof ventilators, and exhaust fans requiring high starting torque and consistent airflow.
Built with a rolled steel frame and open drip proof (ODP) enclosure, the B305 is engineered for optimal cooling during horizontal operation. The ball bearing system ensures low friction and high reliability compared to standard sleeve bearings, while the resilient base and extended studs provide a secure, vibration-dampening mount. This unit serves as the direct replacement for 922L and F504 models, featuring a standard 1/2-inch shaft diameter with a 1-5/8 inch flat for precise blower wheel attachment. For field safety and protection, the motor includes an automatic thermal overload protector to prevent winding failure during restricted airflow conditions.
Key Benefits- Universal Compatibility: Serves as a drop-in replacement for obsolete Century 922L and F504 blower motors, simplifying field retrofits.
- Enhanced Durability: Equipped with precision ball bearings and Class B insulation for extended operational life in high-ambient environments up to 40°C.
- Low Vibration: The resilient mount and extended thru-bolt configuration effectively isolate mechanical noise, essential for indoor air handlers.
- Reliable Performance: High 1.35 service factor and 5.5 Amp rating provide the electrical headroom needed for heavy-duty starting cycles.
Is the Marathon B305 compatible with variable frequency drives?
No, the B305 is a single-speed split phase motor. Use of a VFD or speed controller not specifically designed for split-phase induction motors can cause excessive heat and winding damage.
Can this motor be mounted vertically?
The B305 is primarily designed for horizontal mounting. For vertical applications, ensure the drip loop is maintained and verify with technical specs if the thrust capacity of the ball bearings meets the specific load requirements.
What capacitor does the B305 require?
This is a split phase motor, which utilizes a centrifugal switch and start windings rather than a run capacitor, simplifying the electrical setup during installation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Marathon B305 is a high-performance 1/3 HP belt drive blower motor designed for continuous duty in demanding HVACR applications. Operating on 115Vac single phase power, this 48Y frame motor delivers a reliable 1725/1800 RPM (4-pole) output with a robust 1.35 service factor, allowing for occasional peak loads without compromising long-term durability. This model features a split phase design optimized for residential and commercial furnace blower replacements, roof ventilators, and exhaust fans requiring high starting torque and consistent airflow.
Built with a rolled steel frame and open drip proof (ODP) enclosure, the B305 is engineered for optimal cooling during horizontal operation. The ball bearing system ensures low friction and high reliability compared to standard sleeve bearings, while the resilient base and extended studs provide a secure, vibration-dampening mount. This unit serves as the direct replacement for 922L and F504 models, featuring a standard 1/2-inch shaft diameter with a 1-5/8 inch flat for precise blower wheel attachment. For field safety and protection, the motor includes an automatic thermal overload protector to prevent winding failure during restricted airflow conditions.
Key Benefits- Universal Compatibility: Serves as a drop-in replacement for obsolete Century 922L and F504 blower motors, simplifying field retrofits.
- Enhanced Durability: Equipped with precision ball bearings and Class B insulation for extended operational life in high-ambient environments up to 40°C.
- Low Vibration: The resilient mount and extended thru-bolt configuration effectively isolate mechanical noise, essential for indoor air handlers.
- Reliable Performance: High 1.35 service factor and 5.5 Amp rating provide the electrical headroom needed for heavy-duty starting cycles.
Is the Marathon B305 compatible with variable frequency drives?
No, the B305 is a single-speed split phase motor. Use of a VFD or speed controller not specifically designed for split-phase induction motors can cause excessive heat and winding damage.
Can this motor be mounted vertically?
The B305 is primarily designed for horizontal mounting. For vertical applications, ensure the drip loop is maintained and verify with technical specs if the thrust capacity of the ball bearings meets the specific load requirements.
What capacitor does the B305 require?
This is a split phase motor, which utilizes a centrifugal switch and start windings rather than a run capacitor, simplifying the electrical setup during installation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
