Marathon B313 1/4 HP Single Phase Fan & Blower Motor 48Y Frame

The Marathon B313 is a versatile single-phase fan and blower motor engineered for reliable performance in HVAC applications. This 1/4 horsepower motor features capacitor start design with open drip-proof (ODP) construction, making it ideal for commercial fans, belt-drive air handlers, exhaust fans, and ventilation systems.

Key Specifications:

• Power Output: 1/4 HP (0.19 kW)
• Speed: 1725 RPM (4-pole, 60 Hz)
• Voltage: 115/208-230 VAC, single phase
• Current Draw: 5.2/2.8-2.6 Amps
• Frame: NEMA 48Y with keyed shaft
• Shaft: 2 inches long x 1/2 inch diameter
• Service Factor: 1.35
• Enclosure: Open Drip Proof (ODP)

Construction Features:

• Resilient base mounting with extended studs
• Ball bearing construction for extended service life
• Class B insulation rated for 40°C ambient temperature
• Automatic thermal overload protection
• Reversible rotation capability
• Dynamically balanced rotor for reduced vibration and quiet operation

The Marathon B313 motor includes UL recognition and CSA certification, ensuring compliance with North American safety standards. Its capacitor start induction run design provides reliable starting torque for demanding fan and blower applications while maintaining efficient continuous duty operation.