The Genteq 3S052 is a purpose-built replacement condenser fan motor engineered for commercial and industrial HVAC condensing units running on 460V single-phase power. It directly replaces the Dayton 19L517 and is also cataloged under NBK Parts number 20407. With a totally enclosed air-over (TEAO) enclosure, Class B insulation, automatic thermal protection, and continuous duty rating, this motor is built to handle the sustained outdoor operating conditions that condenser fan applications demand.
Condenser fan motors run hard -- exposed to outdoor heat, vibration, and continuous cycling. The Genteq 3S052 is rated for exactly these conditions: continuous duty cycle, automatic thermal overload protection, and a totally enclosed air-over housing that keeps contaminants out while airflow from the fan blade cools the motor externally.
The permanent split capacitor (PSC) design delivers quiet, efficient single-speed operation without the complexity of multi-capacitor start circuits. Ball bearings provide long service life with minimal maintenance. The stud-mount base and vertical shaft-down orientation match the standard mounting geometry used on most condenser fan deck assemblies.
TEAO enclosure keeps internal windings protected from dust, debris, and moisture while blade airflow provides external cooling -- ideal for outdoor condenser applications.
Built-in thermal overload shuts the motor down before winding damage occurs during high-ambient or restricted-airflow conditions, then automatically resets.
PSC motor delivers efficient, low-noise single-speed operation. Requires a compatible run capacitor -- confirm capacitor rating with the existing unit or Genteq specs before installation.
Precision ball bearings on both ends support the shaft load of condenser fan blades and tolerate the vibration typical of rooftop and ground-mounted condensing units.
The Genteq 3S052 (NBK 20407) is the current-production replacement for the discontinued Dayton 19L517 condenser fan motor. Mounting pattern, shaft dimensions, rotation direction, and electrical ratings match directly, making this a straightforward swap with no adapter hardware required.
PSC motors require a separate run capacitor. This motor is sold without a capacitor. Match the microfarad (uF) and voltage rating to the original motor's capacitor or to the Genteq specification for this frame. Do not reuse a capacitor that shows bulging, leaking, or is more than 5 years old.
This motor is rated for 460V AC single-phase power only. Do not attempt to use on 208V, 230V, or three-phase supply without verifying full motor and system compatibility. Wiring a motor to an incompatible voltage will damage windings and void any warranty.