Nidec-US Motors 1390 Motor

The Nidec-US Motors 1390 Motor is a professional-grade direct drive blower motor designed for continuous duty in residential and light commercial HVAC systems. This 1/4 HP furnace motor operates at 115V and features a 3-speed configuration, allowing technicians to fine-tune airflow for heat pumps, air handlers, and furnaces. Built with an open air over (OAO) enclosure, the 1390 utilizes a permanent split capacitor (PSC) design for high electrical efficiency and reliable start-up torque. The 42Y NEMA frame motor is engineered with self-aligning ball bearings and an all-angle thrust system, ensuring quiet operation and a long service life even in demanding applications. For maximum installation flexibility, this reversible rotation motor includes a 1/2" diameter shaft and standard stud mounting, making it a versatile OEM replacement motor for contractors maintaining diverse equipment fleets.

• Multi-Speed Versatility: 3-speed taps at 1050 RPM provide precise control over static pressure and CFM requirements.
• Enhanced Durability: Equipped with an automatic reset thermal overload protector to prevent winding failure during high-heat conditions.
• Flexible Installation: Reversible rotation and 42Y frame with stud mounts allow for quick field replacement across various blower housing configurations.
• High-Efficiency Design: PSC technology requires a 7.5 MFD capacitor (370V) to optimize energy consumption and reduce operational costs.

What capacitor is required for the US Motors 1390?
This motor requires a 7.5 MFD / 370V permanent split capacitor for proper operation and to maintain efficiency ratings.

Can I use this in an enclosed blower housing?
As an Open Air Over (OAO) motor, the 1390 relies on the moving airstream for cooling; it must be installed in a location with adequate airflow to prevent overheating.

Is the rotation directional?
No, the rotation is electrically reversible, which simplifies the stocking process by allowing the motor to work in both CW and CCW blower applications.

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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.