Nidec-US Motors 1257 Condenser Motor
The Nidec-US Motors 1257 is a trade-grade dual shaft condenser motor engineered for multi-speed applications in packaged terminal air conditioners (PTAC) and heat pump units. This 1/6 HP motor operates on a standard 115V AC single-phase circuit, pulling a steady 2.5 Amps at a nameplate speed of 1450 RPM. Designed as a permanent split capacitor (PSC) motor, it requires a 7.5 MFD/370V run capacitor to maintain peak electrical efficiency and torque. Its 5-inch diameter (42 frame equivalent) and "Open Air Over" (OAO) enclosure are purpose-built for continuous duty cycles where system airflow provides the necessary cooling. Techs will appreciate the 8.25-inch dual shafts and the automatic thermal overload protection, which prevents stator burnout during high-ambient operation. Whether you are performing a condenser motor replacement or upgrading a blower assembly, this unit’s resilient base and CCW lead end rotation ensure a seamless mechanical fit and consistent performance across all three speeds.
Key Benefits- Multi-Speed Flexibility: 3-speed design allows for precise airflow tuning in diverse HVACR configurations.
- Dual-Shaft Versatility: Dual 8.25-inch shafts with a 1/2-inch diameter facilitate simultaneous blower and fan blade operation.
- Reliable Thermal Protection: Integrated automatic reset protector guards against overheating in demanding 40°C ambient environments.
- Class B Insulation: High-grade winding insulation ensures longevity during continuous duty "Air Over" cycles.
- Universal Compatibility: Ideal aftermarket replacement for various Emerson, Fasco, and OEM-specific PTAC motor 1257 models.
What capacitor is required for the US Motors 1257?
This motor is designed to run with a 7.5 MFD / 370V capacitor for proper phase shift and starting torque.
Can I use this motor in a 230V system?
No, this specific model is rated strictly for 115-120V AC. Using it on a higher voltage circuit will damage the windings and trip the internal protection.
Is the rotation reversible?
The 1257 is spec’d for counter-clockwise (CCW) rotation from the lead end. Always verify your existing fan blade pitch before 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: $264.10
-65%$264.10
$92.44Nidec-US Motors 1257 Condenser Motor
The Nidec-US Motors 1257 is a trade-grade dual shaft condenser motor engineered for multi-speed applications in packaged terminal air conditioners (PTAC) and heat pump units. This 1/6 HP motor operates on a standard 115V AC single-phase circuit, pulling a steady 2.5 Amps at a nameplate speed of 1450 RPM. Designed as a permanent split capacitor (PSC) motor, it requires a 7.5 MFD/370V run capacitor to maintain peak electrical efficiency and torque. Its 5-inch diameter (42 frame equivalent) and "Open Air Over" (OAO) enclosure are purpose-built for continuous duty cycles where system airflow provides the necessary cooling. Techs will appreciate the 8.25-inch dual shafts and the automatic thermal overload protection, which prevents stator burnout during high-ambient operation. Whether you are performing a condenser motor replacement or upgrading a blower assembly, this unit’s resilient base and CCW lead end rotation ensure a seamless mechanical fit and consistent performance across all three speeds.
Key Benefits- Multi-Speed Flexibility: 3-speed design allows for precise airflow tuning in diverse HVACR configurations.
- Dual-Shaft Versatility: Dual 8.25-inch shafts with a 1/2-inch diameter facilitate simultaneous blower and fan blade operation.
- Reliable Thermal Protection: Integrated automatic reset protector guards against overheating in demanding 40°C ambient environments.
- Class B Insulation: High-grade winding insulation ensures longevity during continuous duty "Air Over" cycles.
- Universal Compatibility: Ideal aftermarket replacement for various Emerson, Fasco, and OEM-specific PTAC motor 1257 models.
What capacitor is required for the US Motors 1257?
This motor is designed to run with a 7.5 MFD / 370V capacitor for proper phase shift and starting torque.
Can I use this motor in a 230V system?
No, this specific model is rated strictly for 115-120V AC. Using it on a higher voltage circuit will damage the windings and trip the internal protection.
Is the rotation reversible?
The 1257 is spec’d for counter-clockwise (CCW) rotation from the lead end. Always verify your existing fan blade pitch before 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.
Product Information
Product Information
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Shipping & Returns
Description
The Nidec-US Motors 1257 is a trade-grade dual shaft condenser motor engineered for multi-speed applications in packaged terminal air conditioners (PTAC) and heat pump units. This 1/6 HP motor operates on a standard 115V AC single-phase circuit, pulling a steady 2.5 Amps at a nameplate speed of 1450 RPM. Designed as a permanent split capacitor (PSC) motor, it requires a 7.5 MFD/370V run capacitor to maintain peak electrical efficiency and torque. Its 5-inch diameter (42 frame equivalent) and "Open Air Over" (OAO) enclosure are purpose-built for continuous duty cycles where system airflow provides the necessary cooling. Techs will appreciate the 8.25-inch dual shafts and the automatic thermal overload protection, which prevents stator burnout during high-ambient operation. Whether you are performing a condenser motor replacement or upgrading a blower assembly, this unit’s resilient base and CCW lead end rotation ensure a seamless mechanical fit and consistent performance across all three speeds.
Key Benefits- Multi-Speed Flexibility: 3-speed design allows for precise airflow tuning in diverse HVACR configurations.
- Dual-Shaft Versatility: Dual 8.25-inch shafts with a 1/2-inch diameter facilitate simultaneous blower and fan blade operation.
- Reliable Thermal Protection: Integrated automatic reset protector guards against overheating in demanding 40°C ambient environments.
- Class B Insulation: High-grade winding insulation ensures longevity during continuous duty "Air Over" cycles.
- Universal Compatibility: Ideal aftermarket replacement for various Emerson, Fasco, and OEM-specific PTAC motor 1257 models.
What capacitor is required for the US Motors 1257?
This motor is designed to run with a 7.5 MFD / 370V capacitor for proper phase shift and starting torque.
Can I use this motor in a 230V system?
No, this specific model is rated strictly for 115-120V AC. Using it on a higher voltage circuit will damage the windings and trip the internal protection.
Is the rotation reversible?
The 1257 is spec’d for counter-clockwise (CCW) rotation from the lead end. Always verify your existing fan blade pitch before 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.
