Century Electric Motors 4KA34 Furnace Blower Motor

Century 4KA34 furnace blower motor is a direct-drive, three-speed, 1/3 HP PSC blower designed for residential HVAC furnaces. It operates on 115V, 60 Hz, drawing about 5.4 A, and delivers 1,075 RPM on the nameplate. The 48-frame motor uses a resilient ring mounting for vibration isolation, making it a common replacement in blower assemblies where a compact, reliable Century motor is specified. As a single-phase, 115V unit with three speeds, it provides adjustable airflow to match heating or cooling loads, with low, medium, and high settings that correspond to different blower speeds. The model number 4KA34 is widely cataloged in Century’s replacement motor line and is frequently listed for furnace and air-handling applications requiring a 1/3 HP, 115V, 60 Hz blower. Applications include gas or electric furnaces and air handling units that demand a direct-drive motor with a 48-frame footprint and three-speed operation. When selecting this motor, verify frame size, mounting configuration, and electrical compatibility with the control board and capacitor requirements typical of PSC motors.